diff --git a/autograd.html b/autograd.html
index 0bf3a0a7..e313abf5 100644
--- a/autograd.html
+++ b/autograd.html
@@ -477,7 +477,7 @@
 </section>
 
 		<section id="Variable[T].add" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) add <a href="#Variable[T].add">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L7"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) add <a href="#Variable[T].add">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L6"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> add<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>other <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>add Adds two variables together.</p>
@@ -493,7 +493,7 @@
 </section>
 
 		<section id="Variable[T].cos" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) cos <a href="#Variable[T].cos">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L103"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) cos <a href="#Variable[T].cos">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L102"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> cos<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>cos Cosine of a variable.</p>
@@ -501,7 +501,7 @@
 </section>
 
 		<section id="Variable[T].divide" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) divide <a href="#Variable[T].divide">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L43"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) divide <a href="#Variable[T].divide">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L42"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> divide<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>other <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>divide Divides two variables.</p>
@@ -509,7 +509,7 @@
 </section>
 
 		<section id="Variable[T].exp" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) exp <a href="#Variable[T].exp">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L67"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) exp <a href="#Variable[T].exp">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L66"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> exp<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>exp Exponentiates a variable.</p>
@@ -525,7 +525,7 @@
 </section>
 
 		<section id="Variable[T].matmul" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) matmul <a href="#Variable[T].matmul">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L79"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) matmul <a href="#Variable[T].matmul">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L78"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> matmul<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>other <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>matmul Multiplies two matrices.</p>
@@ -533,7 +533,7 @@
 </section>
 
 		<section id="Variable[T].multiply" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) multiply <a href="#Variable[T].multiply">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L31"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) multiply <a href="#Variable[T].multiply">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L30"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> multiply<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>other <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>multiply Multiplies two variables.</p>
@@ -541,7 +541,7 @@
 </section>
 
 		<section id="Variable[T].pow" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) pow <a href="#Variable[T].pow">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L55"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) pow <a href="#Variable[T].pow">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L54"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> pow<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>other <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>pow raises a variable to a power.</p>
@@ -549,7 +549,7 @@
 </section>
 
 		<section id="Variable[T].sin" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) sin <a href="#Variable[T].sin">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L91"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) sin <a href="#Variable[T].sin">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L90"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> sin<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>sin Sine of a variable.</p>
@@ -581,7 +581,7 @@
 </section>
 
 		<section id="Variable[T].subtract" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) subtract <a href="#Variable[T].subtract">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L19"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) subtract <a href="#Variable[T].subtract">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L18"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> subtract<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>other <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>subtract Subtracts two variables.</p>
@@ -589,7 +589,7 @@
 </section>
 
 		<section id="Variable[T].tan" class="doc-node">
-			<div class="title"><h2>fn (Variable[T]) tan <a href="#Variable[T].tan">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L115"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (Variable[T]) tan <a href="#Variable[T].tan">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/autograd/variable_ops.v#L114"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>v <span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> tan<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 <p>tan Tan of a variable.</p>
@@ -805,7 +805,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#add_gate">fn add_gate</a>        <ul>
 </ul>
diff --git a/datasets.html b/datasets.html
index c3c39536..11c86787 100644
--- a/datasets.html
+++ b/datasets.html
@@ -220,7 +220,7 @@ <h1>VTL Datasets</h1><p>This module exposes some functionalities to download and
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#readme_datasets">README</a></li>
 <li class="open"><a href="#Constants">Constants</a></li>
diff --git a/index.html b/index.html
index 8ffd4ccd..e794c764 100644
--- a/index.html
+++ b/index.html
@@ -122,7 +122,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					
 				</div>
diff --git a/la.html b/la.html
index 68252424..b7ae4c56 100644
--- a/la.html
+++ b/la.html
@@ -146,7 +146,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#det">fn det</a>        <ul>
 </ul>
diff --git a/ml.metrics.html b/ml.metrics.html
index 057d8d4e..1c814718 100644
--- a/ml.metrics.html
+++ b/ml.metrics.html
@@ -170,7 +170,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#absolute_error">fn absolute_error</a>        <ul>
 </ul>
diff --git a/nn.gates.activation.html b/nn.gates.activation.html
index 5a574c02..c74543db 100644
--- a/nn.gates.activation.html
+++ b/nn.gates.activation.html
@@ -254,7 +254,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#elu_gate">fn elu_gate</a>        <ul>
 </ul>
diff --git a/nn.gates.layers.html b/nn.gates.layers.html
index f9e88217..4fa43dce 100644
--- a/nn.gates.layers.html
+++ b/nn.gates.layers.html
@@ -294,7 +294,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#dropout_gate">fn dropout_gate</a>        <ul>
 </ul>
diff --git a/nn.gates.loss.html b/nn.gates.loss.html
index 6e4e788b..c5c9c822 100644
--- a/nn.gates.loss.html
+++ b/nn.gates.loss.html
@@ -222,7 +222,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#mse_gate">fn mse_gate</a>        <ul>
 </ul>
diff --git a/nn.internal.html b/nn.internal.html
index 668f4d97..935245b3 100644
--- a/nn.internal.html
+++ b/nn.internal.html
@@ -329,7 +329,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#compute_fans">fn compute_fans</a>        <ul>
 </ul>
diff --git a/nn.layers.html b/nn.layers.html
index 3ebf17ec..bd0f35af 100644
--- a/nn.layers.html
+++ b/nn.layers.html
@@ -122,7 +122,7 @@
 </section>
 
 		<section id="elu_layer" class="doc-node">
-			<div class="title"><h2>fn elu_layer <a href="#elu_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L21"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn elu_layer <a href="#elu_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L20"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> elu_layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>ctx <span class="token operator">&</span>autograd<span class="token punctuation">.</span>Context<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">,</span> output_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">,</span> data EluLayerConfig<span class="token punctuation">)</span> types<span class="token punctuation">.</span>Layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -130,7 +130,7 @@
 </section>
 
 		<section id="flatten_layer" class="doc-node">
-			<div class="title"><h2>fn flatten_layer <a href="#flatten_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L14"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn flatten_layer <a href="#flatten_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L13"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> flatten_layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>ctx <span class="token operator">&</span>autograd<span class="token punctuation">.</span>Context<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">,</span> shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">)</span> types<span class="token punctuation">.</span>Layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -138,7 +138,7 @@
 </section>
 
 		<section id="input_layer" class="doc-node">
-			<div class="title"><h2>fn input_layer <a href="#input_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L16"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn input_layer <a href="#input_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L15"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> input_layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>ctx <span class="token operator">&</span>autograd<span class="token punctuation">.</span>Context<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">,</span> shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">)</span> types<span class="token punctuation">.</span>Layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -162,7 +162,7 @@
 </section>
 
 		<section id="maxpool2d_layer" class="doc-node">
-			<div class="title"><h2>fn maxpool2d_layer <a href="#maxpool2d_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L18"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn maxpool2d_layer <a href="#maxpool2d_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L16"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> maxpool2d_layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>ctx <span class="token operator">&</span>autograd<span class="token punctuation">.</span>Context<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">,</span> input_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">,</span> kernel <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">,</span> padding <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">,</span> stride <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">)</span> types<span class="token punctuation">.</span>Layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -170,7 +170,7 @@
 </section>
 
 		<section id="relu_layer" class="doc-node">
-			<div class="title"><h2>fn relu_layer <a href="#relu_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L14"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn relu_layer <a href="#relu_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L13"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> relu_layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>ctx <span class="token operator">&</span>autograd<span class="token punctuation">.</span>Context<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">,</span> output_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">)</span> types<span class="token punctuation">.</span>Layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -178,7 +178,7 @@
 </section>
 
 		<section id="sigmoid_layer" class="doc-node">
-			<div class="title"><h2>fn sigmoid_layer <a href="#sigmoid_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L14"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn sigmoid_layer <a href="#sigmoid_layer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L13"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> sigmoid_layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">(</span>ctx <span class="token operator">&</span>autograd<span class="token punctuation">.</span>Context<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">,</span> output_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span><span class="token punctuation">)</span> types<span class="token punctuation">.</span>Layer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -210,7 +210,7 @@
 </section>
 
 		<section id="EluLayer[T].output_shape" class="doc-node">
-			<div class="title"><h2>fn (EluLayer[T]) output_shape <a href="#EluLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L28"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (EluLayer[T]) output_shape <a href="#EluLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L27"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>EluLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">output_shape</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span></code></pre>
 
@@ -218,7 +218,7 @@
 </section>
 
 		<section id="EluLayer[T].variables" class="doc-node">
-			<div class="title"><h2>fn (EluLayer[T]) variables <a href="#EluLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L32"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (EluLayer[T]) variables <a href="#EluLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L31"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>_ <span class="token operator">&</span>EluLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">variables</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -226,7 +226,7 @@
 </section>
 
 		<section id="EluLayer[T].forward" class="doc-node">
-			<div class="title"><h2>fn (EluLayer[T]) forward <a href="#EluLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L36"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (EluLayer[T]) forward <a href="#EluLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L35"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>EluLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">forward</span><span class="token punctuation">(</span><span class="token keyword">mut</span> input autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -234,7 +234,7 @@
 </section>
 
 		<section id="FlattenLayer[T].output_shape" class="doc-node">
-			<div class="title"><h2>fn (FlattenLayer[T]) output_shape <a href="#FlattenLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L20"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (FlattenLayer[T]) output_shape <a href="#FlattenLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L19"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>FlattenLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">output_shape</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span></code></pre>
 
@@ -242,7 +242,7 @@
 </section>
 
 		<section id="FlattenLayer[T].variables" class="doc-node">
-			<div class="title"><h2>fn (FlattenLayer[T]) variables <a href="#FlattenLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L27"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (FlattenLayer[T]) variables <a href="#FlattenLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L26"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>_ <span class="token operator">&</span>FlattenLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">variables</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -250,7 +250,7 @@
 </section>
 
 		<section id="FlattenLayer[T].forward" class="doc-node">
-			<div class="title"><h2>fn (FlattenLayer[T]) forward <a href="#FlattenLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L31"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (FlattenLayer[T]) forward <a href="#FlattenLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L30"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>FlattenLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">forward</span><span class="token punctuation">(</span><span class="token keyword">mut</span> input autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -258,7 +258,7 @@
 </section>
 
 		<section id="InputLayer[T].output_shape" class="doc-node">
-			<div class="title"><h2>fn (InputLayer[T]) output_shape <a href="#InputLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L22"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (InputLayer[T]) output_shape <a href="#InputLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L21"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>InputLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">output_shape</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span></code></pre>
 
@@ -266,7 +266,7 @@
 </section>
 
 		<section id="InputLayer[T].variables" class="doc-node">
-			<div class="title"><h2>fn (InputLayer[T]) variables <a href="#InputLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L26"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (InputLayer[T]) variables <a href="#InputLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L25"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>_ <span class="token operator">&</span>InputLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">variables</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -274,7 +274,7 @@
 </section>
 
 		<section id="InputLayer[T].forward" class="doc-node">
-			<div class="title"><h2>fn (InputLayer[T]) forward <a href="#InputLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L30"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (InputLayer[T]) forward <a href="#InputLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L29"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>InputLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">forward</span><span class="token punctuation">(</span><span class="token keyword">mut</span> input autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -330,7 +330,7 @@
 </section>
 
 		<section id="MaxPool2DLayer[T].output_shape" class="doc-node">
-			<div class="title"><h2>fn (MaxPool2DLayer[T]) output_shape <a href="#MaxPool2DLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L27"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (MaxPool2DLayer[T]) output_shape <a href="#MaxPool2DLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L25"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>MaxPool2DLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">output_shape</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span></code></pre>
 
@@ -338,7 +338,7 @@
 </section>
 
 		<section id="MaxPool2DLayer[T].variables" class="doc-node">
-			<div class="title"><h2>fn (MaxPool2DLayer[T]) variables <a href="#MaxPool2DLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L41"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (MaxPool2DLayer[T]) variables <a href="#MaxPool2DLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L39"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>MaxPool2DLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">variables</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -346,7 +346,7 @@
 </section>
 
 		<section id="MaxPool2DLayer[T].forward" class="doc-node">
-			<div class="title"><h2>fn (MaxPool2DLayer[T]) forward <a href="#MaxPool2DLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L45"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (MaxPool2DLayer[T]) forward <a href="#MaxPool2DLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L43"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>MaxPool2DLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">forward</span><span class="token punctuation">(</span><span class="token keyword">mut</span> input autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -354,7 +354,7 @@
 </section>
 
 		<section id="ReLULayer[T].output_shape" class="doc-node">
-			<div class="title"><h2>fn (ReLULayer[T]) output_shape <a href="#ReLULayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L20"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (ReLULayer[T]) output_shape <a href="#ReLULayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L19"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>ReLULayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">output_shape</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span></code></pre>
 
@@ -362,7 +362,7 @@
 </section>
 
 		<section id="ReLULayer[T].variables" class="doc-node">
-			<div class="title"><h2>fn (ReLULayer[T]) variables <a href="#ReLULayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L24"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (ReLULayer[T]) variables <a href="#ReLULayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L23"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>_ <span class="token operator">&</span>ReLULayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">variables</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -370,7 +370,7 @@
 </section>
 
 		<section id="ReLULayer[T].forward" class="doc-node">
-			<div class="title"><h2>fn (ReLULayer[T]) forward <a href="#ReLULayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L28"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (ReLULayer[T]) forward <a href="#ReLULayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L27"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>ReLULayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">forward</span><span class="token punctuation">(</span><span class="token keyword">mut</span> input autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -378,7 +378,7 @@
 </section>
 
 		<section id="SigmoidLayer[T].output_shape" class="doc-node">
-			<div class="title"><h2>fn (SigmoidLayer[T]) output_shape <a href="#SigmoidLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L20"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (SigmoidLayer[T]) output_shape <a href="#SigmoidLayer[T].output_shape">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L19"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>SigmoidLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">output_shape</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span></code></pre>
 
@@ -386,7 +386,7 @@
 </section>
 
 		<section id="SigmoidLayer[T].variables" class="doc-node">
-			<div class="title"><h2>fn (SigmoidLayer[T]) variables <a href="#SigmoidLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L24"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (SigmoidLayer[T]) variables <a href="#SigmoidLayer[T].variables">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L23"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>_ <span class="token operator">&</span>SigmoidLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">variables</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -394,7 +394,7 @@
 </section>
 
 		<section id="SigmoidLayer[T].forward" class="doc-node">
-			<div class="title"><h2>fn (SigmoidLayer[T]) forward <a href="#SigmoidLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L28"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>fn (SigmoidLayer[T]) forward <a href="#SigmoidLayer[T].forward">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L27"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">fn</span> <span class="token punctuation">(</span>layer <span class="token operator">&</span>SigmoidLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token function">forward</span><span class="token punctuation">(</span><span class="token keyword">mut</span> input autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">!</span><span class="token operator">&</span>autograd<span class="token punctuation">.</span>Variable<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span></code></pre>
 
@@ -424,7 +424,7 @@
 </section>
 
 		<section id="EluLayer" class="doc-node">
-			<div class="title"><h2>struct EluLayer <a href="#EluLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L16"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct EluLayer <a href="#EluLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L15"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> EluLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
 	output_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span>
@@ -435,7 +435,7 @@
 </section>
 
 		<section id="EluLayerConfig" class="doc-node">
-			<div class="title"><h2>struct EluLayerConfig <a href="#EluLayerConfig">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L10"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct EluLayerConfig <a href="#EluLayerConfig">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/elu.v#L9"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <div class="attributes"><div class="attribute">@[params]</div></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> <span class="token symbol">EluLayerConfig</span> <span class="token punctuation">{</span>
@@ -446,7 +446,7 @@
 </section>
 
 		<section id="FlattenLayer" class="doc-node">
-			<div class="title"><h2>struct FlattenLayer <a href="#FlattenLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L10"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct FlattenLayer <a href="#FlattenLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/flatten.v#L9"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> FlattenLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
 	shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span>
@@ -456,7 +456,7 @@
 </section>
 
 		<section id="InputLayer" class="doc-node">
-			<div class="title"><h2>struct InputLayer <a href="#InputLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L12"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct InputLayer <a href="#InputLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/input.v#L11"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> InputLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
 	shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span>
@@ -487,7 +487,7 @@
 </section>
 
 		<section id="MaxPool2DLayer" class="doc-node">
-			<div class="title"><h2>struct MaxPool2DLayer <a href="#MaxPool2DLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L11"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct MaxPool2DLayer <a href="#MaxPool2DLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/maxpool.v#L9"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> MaxPool2DLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
 	input_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span>
@@ -500,7 +500,7 @@
 </section>
 
 		<section id="ReLULayer" class="doc-node">
-			<div class="title"><h2>struct ReLULayer <a href="#ReLULayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L10"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct ReLULayer <a href="#ReLULayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/relu.v#L9"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> ReLULayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
 	output_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span>
@@ -510,7 +510,7 @@
 </section>
 
 		<section id="SigmoidLayer" class="doc-node">
-			<div class="title"><h2>struct SigmoidLayer <a href="#SigmoidLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L10"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
+			<div class="title"><h2>struct SigmoidLayer <a href="#SigmoidLayer">#</a></h2><a class="link" rel="noreferrer" target="_blank" href="https://github.com/vlang/vtl/blob/master/vtl/nn/layers/sigmoid.v#L9"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"/></svg></a></div>
 <pre class="signature">
 <code><span class="token keyword">struct</span> SigmoidLayer<span class="token punctuation">[</span><span class="token builtin">T</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
 	output_shape <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token builtin">int</span>
@@ -520,7 +520,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#dropout_layer">fn dropout_layer</a>        <ul>
 </ul>
diff --git a/nn.loss.html b/nn.loss.html
index 45729841..6e915070 100644
--- a/nn.loss.html
+++ b/nn.loss.html
@@ -194,7 +194,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#loss_loss">fn loss_loss</a>        <ul>
 </ul>
diff --git a/nn.models.html b/nn.models.html
index 1a38722f..e1cc1458 100644
--- a/nn.models.html
+++ b/nn.models.html
@@ -370,7 +370,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#sequential">fn sequential</a>        <ul>
 </ul>
diff --git a/nn.optimizers.html b/nn.optimizers.html
index a8b09355..c21c3087 100644
--- a/nn.optimizers.html
+++ b/nn.optimizers.html
@@ -219,7 +219,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#adam_optimizer">fn adam_optimizer</a>        <ul>
 </ul>
diff --git a/nn.types.html b/nn.types.html
index ac5948d3..e0635387 100644
--- a/nn.types.html
+++ b/nn.types.html
@@ -150,7 +150,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#Layer">interface Layer</a>        <ul>
 </ul>
diff --git a/stats.html b/stats.html
index a778e983..69cf88ed 100644
--- a/stats.html
+++ b/stats.html
@@ -453,7 +453,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#absdev">fn absdev</a>        <ul>
 </ul>
diff --git a/storage.html b/storage.html
index b0e18ce5..2e6137d2 100644
--- a/storage.html
+++ b/storage.html
@@ -233,7 +233,7 @@
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#Constants">Constants</a></li>
 <li class="open"><a href="#from_array">fn from_array</a>        <ul>
diff --git a/vtl.html b/vtl.html
index ad5a7686..3ab0e3f7 100644
--- a/vtl.html
+++ b/vtl.html
@@ -1922,7 +1922,7 @@ <h1>The V Tensor Library</h1>
 </section>
 
 
-						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:54:56</div>
+						<div class="footer">Powered by vdoc. Generated on: 9 Apr 2024 00:55:09</div>
 					</div>
 					<div class="doc-toc"><ul><li class="open"><a href="#readme_vtl">README</a></li>
 <li class="open"><a href="#bernoulli">fn bernoulli</a>        <ul>