/**
* 改良過後計算關係度的方法
* @param Annotation $annotation
* @return Output_language_variable_collection
*/
protected function _get_membership_renew(Annotation $annotation, $parameters)
{
//請由子類別來覆寫此方法
$variables = explode(',', $parameters);
$feature = $this->get_feature($annotation);
$this->_CI_load('library', 'fuzzy/Output_language_variable_collection', 'output_language_variable_collection');
$membership = new Output_language_variable_collection();
$membership->set_zero();
if (count($variables) > 1) {
if ($feature <= $variables[0]) {
$membership->set_membership(0, 1);
} else {
if ($feature >= $variables[count($variables) - 1]) {
$membership->set_membership(count($variables) - 1, 1);
} else {
for ($i = 0; $i < count($variables) - 1; $i++) {
$now = $variables[$i];
$next = $variables[$i + 1];
if ($feature > $now && $feature <= $next) {
$len = $next - $now;
$m1 = 1 - ($feature - $now) / $len;
$m2 = 1 - ($next - $feature) / $len;
$membership->set_membership($i, $m1);
$membership->set_membership($i + 1, $m2);
break;
}
}
}
}
}
return $membership;
}