1
안녕하세요 tf-idf에 문제가 있습니다. 이 코드는 나를 보여줍니다tf-idf 오류
$terms = array_count_values(explode(' ', $frase));
$total_term = asort($terms);
$total_array = count($total_term);
for ($i=1; $i<=$total_array; $i++){
$SQL = mysql_query("SELECT webTitulo, webDescripcion, webkeywords, weburl FROM webs WHERE MATCH (webTitulo, webDescripcion, webkeywords, weburl) AGAINST ('$total_term[$i]')", $server_link) or die(mysql_error());
$frec_term = mysql_num_rows($SQL);
}
$sssql = mysql_query("SELECT uDR.webTitulo, uDR.webDescripcion, uDR.webkeywords, uDR.weburl, SUM(uDR.priority) as SPriority
FROM (
(SELECT s1.webTitulo, s1.webDescripcion, s1.weburl, s1.webkeywords, 3 as priority FROM webs s1 WHERE MATCH (webTitulo) AGAINST ('$frase'))
UNION
(SELECT s2.webTitulo, s2.webDescripcion, s2.weburl, s2.webkeywords, 1 as priority FROM webs s2 WHERE MATCH (webkeywords) AGAINST ('$frase'))
UNION
(SELECT s3.webTitulo, s3.webDescripcion, s3.weburl, s3.webkeywords, 2 as priority FROM webs s3 WHERE MATCH (webDescripcion) AGAINST ('$frase'))) uDR
GROUP BY uDR.webTitulo, uDR.weburl, uDR.webDescripcion, uDR.webkeywords
ORDER BY SPriority DESC ", $server_link)
or die(mysql_error());
$totalRows = mysql_num_rows($sssql);
$tf_idf = $frec_term * log10($totalRows/70);
echo $tf_idf;
(70)이 존재하지 않는 변수를 대체 할 수있다 : "0"
이 코드입니다.
인사말
[비추천 프로세스] (http://news.php.net/php.internals/53799)에있는 것처럼 mysql_ * 함수를 사용하지 마십시오. 대신 [MySQLi] (http://php.net/manual/en/book.mysqli.php) 또는 [PDO] (http://php.net/manual/en/book.pdo.php)를 사용하고 [be be 더 나은 PHP 개발자] (http://jason.pureconcepts.net/2012/08/better-php-developer/). –