[Summary view]

   1  <?php
   2  
   3  declare(strict_types=1);
   4  
   5  namespace Phpml\Math\Distance;
   6  
   7  /**
   8   * Class Euclidean
   9   *
  10   * L^2 Metric.
  11   */
  12  class Euclidean extends Distance
  13  {
  14      /**
  15       * Euclidean constructor.
  16       */
  17      public function __construct()
  18      {
  19          parent::__construct(2.0);
  20      }
  21  
  22      /**
  23       * Square of Euclidean distance
  24       *
  25       * @throws \Phpml\Exception\InvalidArgumentException
  26       */
  27      public function sqDistance(array $a, array $b): float
  28      {
  29          return $this->distance($a, $b) ** 2;
  30      }
  31  }