Fukuball\Jieba\JiebaAnalyse::extractTags PHP Метод

    public static function extractTags($content, $top_k = 20, $options = array())
    {
        $defaults = array('mode' => 'default');
        $options = array_merge($defaults, $options);
        $tags = array();
        $words = Jieba::cut($content);
        $freq = array();
        $total = 0.0;
        foreach ($words as $w) {
            $w = trim($w);
            if (mb_strlen($w, 'UTF-8') < 2) {
                continue;
            }
            if (isset($freq[$w])) {
                $freq[$w] = $freq[$w] + 1.0;
            } else {
                $freq[$w] = 0.0 + 1.0;
            }
            $total = $total + 1.0;
        }
        foreach ($freq as $k => $v) {
            $freq[$k] = $v / $total;
        }
        $tf_idf_list = array();
        foreach ($freq as $k => $v) {
            if (isset(self::$idf_freq[$k])) {
                $idf_freq = self::$idf_freq[$k];
            } else {
                $idf_freq = self::$max_idf;
            }
            $tf_idf_list[$k] = $v * $idf_freq;
        }
        arsort($tf_idf_list);
        $tags = array_slice($tf_idf_list, 0, $top_k, true);
        return $tags;
    }

 public function testExtractTags()
 {
     $case_array = array("所謂" => 1.1425214508493, "沒有" => 0.76168096723288, "是否" => 0.71841348115616, "一般" => 0.59095311682055, "肌迫" => 0.38084048361644, "雖然" => 0.38084048361644, "退縮" => 0.38084048361644, "矯作" => 0.38084048361644, "怯懦" => 0.26367154884822, "滿肚" => 0.19042024180822);
     $top_k = 10;
     $content = file_get_contents(dirname(dirname(__FILE__)) . "/src/dict/lyric.txt", "r");
     $tags = JiebaAnalyse::extractTags($content, $top_k);
     $this->assertEquals($case_array, $tags);
 }