function SparseVector::intersect_mean in Recommender API 7.6

File

classes/Matrix.php, line 335

Class

SparseVector

Sparse Vector takes care of missing data.

Code

function intersect_mean(&$vector) {
  $subset = $this
    ->common_items($vector);
  if ($subset === NULL) {
    return NAN;
  }
  return $subset[0]
    ->mean(TRUE);
}