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<?php declare(strict_types=1); namespace Phpml\Math\Distance; /** * Class Euclidean * * L^2 Metric. */ class Euclidean extends Distance { /** * Euclidean constructor. */ public function __construct() { parent::__construct(2.0); } /** * Square of Euclidean distance * * @throws \Phpml\Exception\InvalidArgumentException */ public function sqDistance(array $a, array $b): float { return $this->distance($a, $b) ** 2; } }
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