<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>XOR training</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="fann.examples.html">Examples</a></div> <div class="next" style="text-align: right; float: right;"><a href="ref.fann.html">Fann Functions</a></div> <div class="up"><a href="fann.examples.html">Examples</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="fann.examples-1" class="section"> <h2 class="title">XOR training</h2> <p class="para"> This example shows how to train data for XOR function <div class="example" id="example-3747"> <p><strong>Example #1 Simple train</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$num_input </span><span style="color: #007700">= </span><span style="color: #0000BB">2</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$num_output </span><span style="color: #007700">= </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$num_layers </span><span style="color: #007700">= </span><span style="color: #0000BB">3</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$num_neurons_hidden </span><span style="color: #007700">= </span><span style="color: #0000BB">3</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$desired_error </span><span style="color: #007700">= </span><span style="color: #0000BB">0.001</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$max_epochs </span><span style="color: #007700">= </span><span style="color: #0000BB">500000</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$epochs_between_reports </span><span style="color: #007700">= </span><span style="color: #0000BB">1000</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$ann </span><span style="color: #007700">= </span><span style="color: #0000BB">fann_create_standard</span><span style="color: #007700">(</span><span style="color: #0000BB">$num_layers</span><span style="color: #007700">, </span><span style="color: #0000BB">$num_input</span><span style="color: #007700">, </span><span style="color: #0000BB">$num_neurons_hidden</span><span style="color: #007700">, </span><span style="color: #0000BB">$num_output</span><span style="color: #007700">);<br /><br />if (</span><span style="color: #0000BB">$ann</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">fann_set_activation_function_hidden</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">, </span><span style="color: #0000BB">FANN_SIGMOID_SYMMETRIC</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">fann_set_activation_function_output</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">, </span><span style="color: #0000BB">FANN_SIGMOID_SYMMETRIC</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$filename </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">) . </span><span style="color: #DD0000">"/xor.data"</span><span style="color: #007700">;<br /> if (</span><span style="color: #0000BB">fann_train_on_file</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">, </span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #0000BB">$max_epochs</span><span style="color: #007700">, </span><span style="color: #0000BB">$epochs_between_reports</span><span style="color: #007700">, </span><span style="color: #0000BB">$desired_error</span><span style="color: #007700">))<br /> </span><span style="color: #0000BB">fann_save</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">, </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">) . </span><span style="color: #DD0000">"/xor_float.net"</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">fann_destroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> <p class="para"> This example shows how to read and run data for XOR function <div class="example" id="example-3748"> <p><strong>Example #2 Simple test</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$train_file </span><span style="color: #007700">= (</span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">) . </span><span style="color: #DD0000">"/xor_float.net"</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">is_file</span><span style="color: #007700">(</span><span style="color: #0000BB">$train_file</span><span style="color: #007700">))<br /> die(</span><span style="color: #DD0000">"The file xor_float.net has not been created! Please run simple_train.php to generate it"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$ann </span><span style="color: #007700">= </span><span style="color: #0000BB">fann_create_from_file</span><span style="color: #007700">(</span><span style="color: #0000BB">$train_file</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$ann</span><span style="color: #007700">)<br /> die(</span><span style="color: #DD0000">"ANN could not be created"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$input </span><span style="color: #007700">= array(-</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$calc_out </span><span style="color: #007700">= </span><span style="color: #0000BB">fann_run</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">, </span><span style="color: #0000BB">$input</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"xor test (%f,%f) -> %f\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$input</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$input</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">], </span><span style="color: #0000BB">$calc_out</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]);<br /></span><span style="color: #0000BB">fann_destroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$ann</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="fann.examples.html">Examples</a></div> <div class="next" style="text-align: right; float: right;"><a href="ref.fann.html">Fann Functions</a></div> <div class="up"><a href="fann.examples.html">Examples</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>