Test Setup Failed
Push — master ( f6aa1a...8544cf )
by Arkadiusz
02:28
created

Regression::assertCountEquals()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 6

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 6
rs 10
c 0
b 0
f 0
cc 2
nc 2
nop 2
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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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use Phpml\Math\Statistic\Correlation;
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use Phpml\Math\Statistic\Mean;
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final class Regression
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{
13 View Code Duplication
    public static function meanSquaredError(array $targets, array $predictions): float
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Duplication introduced by Arkadiusz Kondas
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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    {
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        self::assertCountEquals($targets, $predictions);
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        $errors = [];
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        foreach ($targets as $index => $target) {
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            $errors[] = (($target - $predictions[$index]) ** 2);
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        }
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        return Mean::arithmetic($errors);
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    }
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    public static function meanSquaredLogarithmicError(array $targets, array $predictions): float
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    {
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        self::assertCountEquals($targets, $predictions);
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        $errors = [];
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        foreach ($targets as $index => $target) {
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            $errors[] = (log(1 + $target) - log(1 + $predictions[$index])) ** 2;
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        }
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        return Mean::arithmetic($errors);
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    }
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37 View Code Duplication
    public static function meanAbsoluteError(array $targets, array $predictions): float
0 ignored issues
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Duplication introduced by Arkadiusz Kondas
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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38
    {
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        self::assertCountEquals($targets, $predictions);
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        $errors = [];
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        foreach ($targets as $index => $target) {
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            $errors[] = abs($target - $predictions[$index]);
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        }
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        return Mean::arithmetic($errors);
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    }
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49 View Code Duplication
    public static function medianAbsoluteError(array $targets, array $predictions): float
0 ignored issues
show
Duplication introduced by Arkadiusz Kondas
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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50
    {
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        self::assertCountEquals($targets, $predictions);
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        $errors = [];
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        foreach ($targets as $index => $target) {
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            $errors[] = abs($target - $predictions[$index]);
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        }
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        return (float) Mean::median($errors);
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    }
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    public static function r2Score(array $targets, array $predictions): float
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    {
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        self::assertCountEquals($targets, $predictions);
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        return Correlation::pearson($targets, $predictions) ** 2;
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    }
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68 View Code Duplication
    public static function maxError(array $targets, array $predictions): float
0 ignored issues
show
Duplication introduced by Arkadiusz Kondas
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

Loading history...
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    {
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        self::assertCountEquals($targets, $predictions);
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        $errors = [];
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        foreach ($targets as $index => $target) {
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            $errors[] = abs($target - $predictions[$index]);
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        }
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        return (float) max($errors);
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    }
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    private static function assertCountEquals(array &$targets, array &$predictions): void
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    {
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        if (count($targets) !== count($predictions)) {
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            throw new InvalidArgumentException('Targets count must be equal with predictions count');
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        }
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    }
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}
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