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<?php declare(strict_types=1); namespace Phpml\CrossValidation; use Phpml\Dataset\Dataset; class RandomSplit extends Split { protected function splitDataset(Dataset $dataset, float $testSize): void { $samples = $dataset->getSamples(); $labels = $dataset->getTargets(); $datasetSize = count($samples); $testCount = count($this->testSamples); for ($i = $datasetSize; $i > 0; --$i) { $key = mt_rand(0, $datasetSize - 1); $setName = (count($this->testSamples) - $testCount) / $datasetSize >= $testSize ? 'train' : 'test'; $this->{$setName.'Samples'}[] = $samples[$key]; $this->{$setName.'Labels'}[] = $labels[$key]; } } }
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