protected function Recommender::saveSimilarityMatrix in Recommender API 6.2

1 call to Recommender::saveSimilarityMatrix()

CorrelationRecommender::computeSimilarityMemory in ./Recommender.php

File

./Recommender.php, line 170

Class

Recommender

The super class for all other Recommender algorithms.

Code

protected function saveSimilarityMatrix($lowerbound = 0) {
  watchdog('recommender', "Saving similarity result to database. Please wait.");
  $map = array_flip($this->mouseMap);

  //$m = $this->getMouseNum();
  $data = array();
  $values = $this->similarityMatrix
    ->raw_values();

  //for ($v1=0; $v1<$m; $v1++) {

  //  for ($v2=0; $v2<$m; $v2++) {
  foreach ($map as $v1 => $mouse1) {
    foreach ($map as $v2 => $mouse2) {
      if (!isset($values[$v1][$v2])) {
        continue;
      }

      // we might skip if it's undefined.
      $score = $values[$v1][$v2];
      if (!is_nan($score) && $score >= $lowerbound) {
        $data[] = "({$this->appId}, {$mouse1}, {$mouse2}, {$score}, {$this->created})";
      }

      // end of if (score)
    }

    // end of for($v2)
  }

  // end of for($v1)
  $this
    ->batchInsert("INSERT INTO {recommender_similarity}(app_id, mouse1_id, mouse2_id, similarity, created) VALUES", $data);
}