public static function findTagWeights($limit = 20)
{
$models = Tag::find()->orderBy(['frequency' => SORT_DESC])->all();
$total = 0;
foreach ($models as $model) {
$total += $model->frequency;
}
$tags = [];
if ($total > 0) {
foreach ($models as $model) {
$tags[$model->name] = 8 + (int) (16 * $model->frequency / ($total + 10));
}
ksort($tags);
}
return $tags;
}
