Phpml\Metric\Accuracy::score PHP Method

    public static function score(array $actualLabels, array $predictedLabels, bool $normalize = true)
    {
        if (count($actualLabels) != count($predictedLabels)) {
            throw InvalidArgumentException::arraySizeNotMatch();
        }
        $score = 0;
        foreach ($actualLabels as $index => $label) {
            if ($label == $predictedLabels[$index]) {
                ++$score;
            }
        }
        if ($normalize) {
            $score = $score / count($actualLabels);
        }
        return $score;
    }