Detection of language with classification

From ANN - Artificial Neural Network for PHP 5
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FAQ

For information about dat-files have a view to the FAQ page.

Training

require_once '../ANN/Loader.php';
 
use ANN\Network;
use ANN\Classification;
use ANN\StringValue;
use ANN\Values;
 
try
{
  $objNetwork = Network::loadFromFile('strings.dat');
}
catch(Exception $e)
{
  print 'Creating a new one...';
 
  $objClassification = new Classification(2); // As of ANN 2.1.2
 
  $objClassification->addClassifier('german');
 
  $objClassification->addClassifier('english');
 
  $objClassification->saveToFile('classifiers_strings.dat');
 
  $objNetwork = new Network(1, 8, 2);
 
  $objStringValues = new StringValue(15); // As of ANN 2.1.1
 
  $objStringValues->saveToFile('input_strings.dat');
 
  $objValues = new Values;
 
  $objValues->train()
    ->input($objStringValues->getInputValue('Hallo Welt'))
    ->output($objClassification->getOutputValue('german'))
    ->input($objStringValues->getInputValue('Hello World'))
    ->output($objClassification('english')); // As of PHP 5.3.0
 
  $objValues->saveToFile('values_strings.dat');
 
  unset($objValues);
}
 
try
{
  $objValues = Values::loadFromFile('values_strings.dat');
}
catch(Exception $e)
{
  die('Loading of values failed');
}
 
$objNetwork->setValues($objValues);
 
$objNetwork->train();
 
$objNetwork->saveToFile('strings.dat');
 
$objNetwork->printNetwork();

Using trained network

require_once '../ANN/Loader.php';
 
use ANN\Network;
use ANN\Classification;
use ANN\StringValue;
use ANN\Values;
 
try
{
  $objNetwork = Network::loadFromFile('strings.dat');
}
catch(Exception $e)
{
  print 'Network cannot be loaded';
}
 
try
{
  $objValues = Values::loadFromFile('values_strings.dat');
}
catch(Exception $e)
{
  die('Loading of values failed');
}
 
try
{
  $objStringValues = StringValue::loadFromFile('input_strings.dat');
}
catch(Exception $e)
{
  die('Loading of input values failed');
}
 
try
{
  $objClassification = Classification::loadFromFile('classifiers_strings.dat');
}
catch(Exception $e)
{
  die('Loading of classification failed');
}
 
$objValues->input($objStringValues->getInputValue('HAllo Welt'));
$objValues->input($objStringValues->getInputValue('Hello World'));
$objValues->input($objStringValues->getInputValue('Hálló Wélt'));
$objValues->input($objStringValues->getInputValue('Hélló Wórld'));
$objValues->input($objStringValues('Hßllo Welt'));   // As of PHP 5.3.0
$objValues->input($objStringValues('Hßlló Wórld'));  // As of PHP 5.3.0
$objValues->input($objStringValues('Hallo Welt!'));  // As of PHP 5.3.0
$objValues->input($objStringValues('Helló Wórld!')); // As of PHP 5.3.0
 
$objNetwork->setValues($objValues);
 
$objNetwork->printNetwork();
 
$arrOutputs = $objNetwork->getOutputs();
 
foreach($arrOutputs as $arrOutput)
  print_r($objClassification->getRealOutputValue($arrOutput));