public function get_inference_result(Language_variable_collection $langvar_coll)
{
$output_coll = new Output_language_variable_collection();
$weight_array = $langvar_coll->get_weight_array();
$membership_matrix = $langvar_coll->get_membership_matrix();
for ($x = 0; $x < $output_coll->get_number(); $x++) {
$min_array = array();
for ($y = 0; $y < count($weight_array); $y++) {
$min_array[] = min(array($weight_array[$y], $membership_matrix[$y][$x]));
}
$max = max($min_array);
$output_coll->set_membership($x, $max);
}
return $output_coll;
}
/**
* 預設計算關係度的方法
* @param Annotation $annotation
* @return Output_language_variable_collection
*/
protected function _get_membership_default(Annotation $annotation)
{
//請由子類別來覆寫此方法
$speech_array = $this->get_feature($annotation);
$this->_CI_load('library', 'fuzzy/Output_language_variable_collection', 'output_language_variable_collection');
$membership = new Output_language_variable_collection();
$this->CI->config->load('kals');
$membership_function_variables = $this->CI->config->item($this->name . '.membership_function_variables');
$membership->set_memberships(array(1, 0, 0));
foreach ($membership_function_variables as $speech => $ms_var) {
if (in_array($speech, $speech_array)) {
$var = $membership_function_variables[$speech];
$membership->set_memberships($var);
break;
}
}
return $membership;
}
/**
* 預設計算關係度的方法
* @param Annotation $annotation
* @return Output_language_variable_collection
*/
protected function _get_membership_default(Annotation $annotation)
{
$location_array = $this->get_feature($annotation);
$this->_CI_load('library', 'fuzzy/Output_language_variable_collection', 'output_language_variable_collection');
$membership = new Output_language_variable_collection();
$this->CI->config->load('kals');
$membership_function_variables = $this->CI->config->item($this->name . '.membership_function_variables');
$membership->set_memberships(array(1, 0, 0));
if (is_null($location_array)) {
return $menbership;
}
//test_msg('lang location ', array(count($location_array), $location_array[0], is_array($location_array)));
foreach ($membership_function_variables as $location_id => $ms_var) {
if (in_array($location_id, $location_array) === TRUE) {
$membership->set_memberships($ms_var);
break;
}
}
return $membership;
}
/**
* 產生提示文字
* @return String
*/
public function _produce_tip_text()
{
//langvar.speech.tip.recommend_by_threshold
$threshold = $this->CI->config->item('langvar.' . $this->langvar_name . '.tip.recommend_by_threshold');
$membership_function = $this->_get_membership_function();
$anchor_speech = $this->annotation->get_anchor_speech();
$this->_CI_load('library', 'fuzzy/Output_language_variable_collection');
$tip_text_header = $this->name . '.';
$recommend_langs = array();
foreach ($membership_function as $speech => $ms) {
if (FALSE === in_array($speech, $anchor_speech)) {
//先計算是否高過recommend_by_threshold
$ms_langcoll = new Output_language_variable_collection();
$ms_langcoll->set_memberships($ms);
$score = $ms_langcoll->get_defuzzy_code();
$lang = $this->lang->line($tip_text_header . $speech);
//test_msg($score, array($this->langvar_name.'.tip.recommend_by_threshold', $lang, $threshold, ($score < $threshold)));
if ($score < $threshold) {
break;
}
if (FALSE === $lang) {
continue;
}
$recommend_langs[] = $lang;
if (count($recommend_langs) > 4) {
break;
}
}
}
$recommend = '';
foreach ($recommend_langs as $lang) {
if ($recommend != '') {
$recommend .= $this->lang->line('tip.comma');
}
$recommend .= $lang;
}
$text = $this->lang->line($this->name . '.text', $recommend);
return $text;
}
public function get_inference_result(Language_variable_collection $langvar_coll)
{
$output_coll = new Output_language_variable_collection();
$weight_array = $langvar_coll->get_weight_array();
$membership_matrix = $langvar_coll->get_membership_matrix();
for ($x = 0; $x < $output_coll->get_number(); $x++) {
$multiplication_array = array();
for ($y = 0; $y < count($weight_array); $y++) {
$r = $weight_array[$y] * $membership_matrix[$y][$x];
$multiplication_array[] = $r;
}
$result = 0;
for ($z = 0; $z < count($multiplication_array); $z++) {
$result = $result + $multiplication_array[$z];
}
if ($result > 1) {
$result = 1;
}
$output_coll->set_membership($x, $result);
}
return $output_coll;
}
protected function renew_function_variables()
{
//這邊請用k-means來做
$this->_CI_load('library', 'kals_resource/Webpage', 'webpage');
$function_variables = NULL;
$webpage_id = intval($this->get_field('webpage_id'));
$webpage = new Webpage($webpage_id);
$annotation_coll = $webpage->get_appended_annotation();
//標註數量太少的話就沒有分群的價值，取消分群
if ($annotation_coll->length() < 20) {
return $this;
}
$data = array();
foreach ($annotation_coll as $annotation) {
$data[] = $this->get_feature($annotation);
}
$this->_CI_load('library', 'fuzzy/Output_language_variable_collection', 'output_language_variable_collection');
$membership = new Output_language_variable_collection();
$number = $membership->get_number();
$this->_CI_load('library', 'fuzzy/Clustering', 'clustering');
$clustering = Clustering::get_clustering();
$clustering->set_data($data);
$clustering->set_clusters_number($number);
$positions = $clustering->get_result_positions();
$function_variables = '';
foreach ($positions as $p) {
if ($function_variables != '') {
$function_variables .= ',';
}
$function_variables .= $p;
}
$this->set_field('function_variables', $function_variables);
return $this;
}