function activate()
{
$sum = 0;
foreach (array_keys($this->inputs) as $k) {
$sum += $this->inputs[$k] * $this->weights[$k];
}
$this->setOutput(Maths::sigmoid($sum));
}
<?php
ini_set("max_execution_time", 300);
require_once "nn.php";
$filename = "xor.dat";
$network = Network::load($filename);
if ($network == null) {
echo "\nNetwork not found. Creating a new one...";
$network =& new Network(1, 10, 1);
}
$inputs = array(array(0, 0), array(0, 1), array(1, 0), array(1, 1));
$outputs = array(array(0), array(1), array(1), array(0));
for ($i = 0; $i < 10000; $i++) {
$j = Maths::random(0, 3);
$network->setInputs($inputs[$j]);
$network->train(0.5, $outputs[$j]);
}
$network->save($filename);
/**
* Returns the percentage of words with more than three syllables
* @param string $strText Text to be measured
* @param bool $blnCountProperNouns Boolean - should proper nouns be included in words count
* @return int|float
*/
public static function percentageWordsWithThreeSyllables($strText, $blnCountProperNouns = true, $strEncoding = '')
{
$intWordCount = Text::wordCount($strText, $strEncoding);
$intLongWordCount = self::wordsWithThreeSyllables($strText, $blnCountProperNouns, $strEncoding);
$intPercentage = Maths::bcCalc(Maths::bcCalc($intLongWordCount, '/', $intWordCount), '*', 100);
return $intPercentage;
}
/**
* Gives the Spache readability score of text entered rounded to one digit
* @param boolean|string $strText Text to be checked
* @return int|float
*/
public function spacheReadabilityScore($strText = false)
{
$strText = $this->setText($strText);
$score = Maths::bcCalc(Maths::bcCalc(Maths::bcCalc(0.121, '*', Maths::bcCalc(Text::wordCount($strText, $this->strEncoding), '/', Text::sentenceCount($strText, $this->strEncoding))), '+', Maths::bcCalc(0.082, '*', $this->spacheDifficultWordCount($strText))), '+', 0.659);
if ($this->normalise) {
return Maths::normaliseScore($score, 0, 5, $this->dps);
// Not really suitable for measuring readability above grade 4
} else {
return Maths::bcCalc($score, '+', 0, true, $this->dps);
}
}
/**
* @uses Maths::sigmoid()
*/
public function activate()
{
$floatSum = 0;
foreach ($this->arrInputs as $intKey => $floatInput) {
$floatSum += $floatInput * $this->arrWeights[$intKey];
}
$this->floatOutput = Maths::sigmoid($floatSum);
}
/**
* @return array
* @uses Maths::threshold()
*/
public function getThresholdOutputs()
{
$arrReturnOutputs = array();
foreach ($this->arrOutputs as $intKey => $floatOutput) {
$arrReturnOutputs[$intKey] = Maths::threshold($floatOutput);
}
return $arrReturnOutputs;
}
/**
* Returns average words per sentence for text.
* @param string $strText Text to be measured
* @param string $strEncoding Encoding of text
* @return int|float
*/
public static function averageWordsPerSentence($strText, $strEncoding = '')
{
$intSentenceCount = self::sentenceCount($strText, $strEncoding);
$intWordCount = self::wordCount($strText, $strEncoding);
$averageWords = Maths::bcCalc($intWordCount, '/', $intSentenceCount);
return $averageWords;
}
