PHP 5.4.31 Released

XOR training

This example shows how to train data for XOR function

Exemplo #1 Simple train

<?php
$num_input 
2;
$num_output 1;
$num_layers 3;
$num_neurons_hidden 3;
$desired_error 0.001;
$max_epochs 500000;
$epochs_between_reports 1000;

$ann fann_create_standard($num_layers$num_input$num_neurons_hidden$num_output);

if (
$ann) {
    
fann_set_activation_function_hidden($annFANN_SIGMOID_SYMMETRIC);
    
fann_set_activation_function_output($annFANN_SIGMOID_SYMMETRIC);

    
$filename dirname(__FILE__) . "/xor.data";
    if (
fann_train_on_file($ann$filename$max_epochs$epochs_between_reports$desired_error))
        
fann_save($anndirname(__FILE__) . "/xor_float.net");

    
fann_destroy($ann);
}
?>

This example shows how to read and run data for XOR function

Exemplo #2 Simple test

<?php
$train_file 
= (dirname(__FILE__) . "/xor_float.net");
if (!
is_file($train_file))
    die(
"The file xor_float.net has not been created! Please run simple_train.php to generate it");

$ann fann_create_from_file($train_file);
if (!
$ann)
    die(
"ANN could not be created");

$input = array(-11);
$calc_out fann_run($ann$input);
printf("xor test (%f,%f) -> %f\n"$input[0], $input[1], $calc_out[0]);
fann_destroy($ann);
?>

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User Contributed Notes 1 note

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1
aleks dot rk at gmail dot com
2 months ago
xor.data file is missing from the example.
Here is the file xor.data, used to train the xor function:

4 2 1
-1 -1
-1
-1 1
1
1 -1
1
1 1
-1
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