/**
* @throws \Exception
* @return bool
*/
public function calculate()
{
//Calculating value
$_sum = array_sum($this->getSignals());
$_sum += $this->getLayout()->getOffset();
$this->_value = $this->_binarSigmoid($_sum);
if (Net::isTeacherMode()) {
Net::setDirection(Net::REVERSE);
$_value = ($this->_teacherValue - $this->_value) * $this->_diffBinarSigmoid($_sum);
//new value will be mistake
if (Net::isDebugEnabled()) {
//Print value and teacher value/
var_dump("Summ: {$_value}. Teacher : " . $this->_teacherValue . ". Value: " . $this->_value);
}
$this->setValue($_value);
} else {
$this->getLayout()->compare($this);
//add to lead neurons if this neuron has the max value
}
return true;
}
/**
* Check what mode we have -> iterate only in one side when we are using production mode, and use back propagation if we have also mistake flow
* @return bool
*/
public function valid()
{
if (!Net::validateIteration()) {
return false;
}
if (!Net::isTeacherMode()) {
return $this->_level != $this->count();
} else {
//back propaganation
return !($this->_level == $this->count() && !Net::isMistakeFlow() && ($this->_level == 0 && Net::isMistakeFlow()));
}
}
