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