public function createXML($file, $filename = null, $vals)
{
/*
if(in_array($this->__getExtension($filename),$this->type)){*/
$stemmer = new stemmer();
$words = str_replace('.', ' ', $file);
$words = explode(' ', $words);
//create the xml document
$xmlDoc = new DOMDocument();
//create the root element
$root = $xmlDoc->appendChild($xmlDoc->createElement("Document"));
// echo '<pre>';
// print_r($vals);
// echo '</pre>';
$tutorials = array($this->__element($vals['penulis'], $vals['title'], $vals['th_buat'], $vals['ID']));
$arrkey = explode(",", $vals['meta_keyword']);
foreach ($tutorials as $tut) {
//create a tutorial element
$tutTag = $root->appendChild($xmlDoc->createElement("Detail"));
//create the author attribute
$tutTag->appendChild($xmlDoc->createAttribute("Author"))->appendChild($xmlDoc->createTextNode($this->author));
//create the title element
$tutTag->appendChild($xmlDoc->createElement("Title", $this->title));
//create the date element
$tutTag->appendChild($xmlDoc->createElement("Year", $this->date));
$tutTag->appendChild($xmlDoc->createElement("ID", $this->ID));
//create the categories element
$catTag = $tutTag->appendChild($xmlDoc->createElement("Words"));
//create a category element for each category in the array
foreach ($words as $cat) {
$w = $this->casefolding($cat);
if (!in_array($w, $arrkey)) {
$kata = $stemmer->Root($w);
} else {
$kata = $w;
}
if (!in_array($kata, $this->stoplist)) {
if (!empty($kata)) {
$catTag->appendChild($xmlDoc->createElement("Word", trim(strtolower($kata))));
}
}
}
}
//header("Content-Type: text/plain");
$file_save = $filename . '.xml';
//make the output pretty
$xmlDoc->formatOutput = true;
$output = $xmlDoc->saveXML();
$destination = FILE_DIR . 'xml/';
if ($fd = @fopen($destination . $file_save, 'w')) {
$msg = @fwrite($fd, $output);
}
return $file_save;
/*} else {
$this->validation();
return false;
}*/
}
function gethasil($_getTerm, $collections = null)
{
//print_r($_getTerm);
//print_r($collections);
$start = microtime(true);
$the_cache = FILE_DIR . 'cache/temp/cache.txt';
file_put_contents($the_cache, (string) $_getTerm, FILE_APPEND | LOCK_EX);
$params = explode(' ', strtolower($_getTerm));
$stemmer = new stemmer();
$vsm = new vsm();
$collection = array();
$this->globals = $params;
foreach ($this->globals as $q) {
$queryafter[$q] = $stemmer->Root($q);
}
$query = array_values($queryafter);
$fileIndex = FILE_DIR . 'cache/index/test.txt';
// $terindex = file_get_contents($fileIndex);
// $index = $vsm->normlize($terindex);
$index = $vsm->getIndex($collections);
//$this->pre($index);
$matchDocs = array();
$docCount = count($index['docCount']);
$dictionary = $index['dictionary'];
// $this->pre($dictionary);
foreach ($dictionary as $word => $array) {
//array_unshift($collection,$word);
$collection[] = $word;
}
if ($docCount) {
$docCount = 2;
}
//$this->pre($collection);
foreach ($collection as $key => $qterm) {
$entry = $index['dictionary'][$qterm];
//echo $qterm . $this->pre($entry);
if (!empty($entry)) {
foreach ($entry['postings'] as $docID => $posting) {
$matchDocs[$docID][$qterm] += pow($posting['tf'] * log10(($docCount + 1) / $entry['df']), 2);
$matchDocs[$docID][$qterm . '_q'] += $posting['tf'] * log10(($docCount + 1) / $entry['df']);
//echo $posting['tf'];
// $matchDocs[$docID][$qterm] = 2;
// $matchDocs[$docID][$qterm.'_q'] = 2;
}
}
}
//$this->pre($matchDocs);
$sum = array();
foreach ($query as $term) {
$term = strtolower($term);
$term = $stemmer->Root($term);
//$this->pre($term);
$keys = array_keys($matchDocs);
foreach ($keys as $key) {
foreach ($matchDocs[$key] as $docs => $doc) {
if (strtolower($docs) == $term . '_q') {
$tf = $index['dictionary'][$term]['postings'][$key]['tf'];
$df = 1;
$k = $vsm->getW($term, $index);
$match[$term][$key] = $tf * $doc;
$sum[$key]['kkdotDi'] += $doc * $k[$key];
}
}
}
}
//$this->pre($match);
if (count($match) >= 1) {
$keys = array_keys($matchDocs);
foreach ($keys as $key) {
foreach ($matchDocs[$key] as $docs => $doc) {
$text = explode('_', $docs);
if (empty($text[1])) {
$sum[$key]['sqrtDi'] += $doc;
}
}
}
//keyword
$keyword = $vsm->getTfidf($queryafter, $index);
//
// VSM
$keyss = array_keys($matchDocs);
//$this->pre($keyword);
foreach ($keyss as $key) {
$kkdotDi = $sum[$key]['kkdotDi'];
$sqrtDi = $sum[$key]['sqrtDi'];
if ($kkdotDi != null) {
//$cos = $kkdotDi/((sqrt($sqrtDi))*($sqrtkk));
if ($vsm->coSim($sqrtDi, $kkdotDi, $keyword) != 0) {
$hasil[$key] = $vsm->coSim($sqrtDi, $kkdotDi, $keyword);
}
}
}
} else {
$hasil = null;
}
if ($hasil != null) {
arsort($hasil);
}
//$this->pre($sum);
//$this->pre($hasil);
return array('total' => round(microtime(true) - $start, 3), 'result' => $hasil);
}
