Proyectos de Subversion Moodle

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<?php
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declare(strict_types=1);
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namespace Phpml\Metric;
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use Phpml\Exception\InvalidArgumentException;
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class Accuracy
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{
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    /**
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     * @return float|int
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     *
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     * @throws InvalidArgumentException
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     */
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    public static function score(array $actualLabels, array $predictedLabels, bool $normalize = true)
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    {
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        if (count($actualLabels) != count($predictedLabels)) {
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            throw new InvalidArgumentException('Size of given arrays does not match');
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        }
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        $score = 0;
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        foreach ($actualLabels as $index => $label) {
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            if ($label == $predictedLabels[$index]) {
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                ++$score;
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            }
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        }
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        if ($normalize) {
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            $score /= count($actualLabels);
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        }
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        return $score;
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    }
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}