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<?php
declare (strict_types = 1);
namespace Phpml\CrossValidation;
use Phpml\Dataset\Dataset;
class RandomSplit extends Split
{
/**
* @param Dataset $dataset
* @param float $testSize
*/
protected function splitDataset(Dataset $dataset, float $testSize)
$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];
}
php-ai /
php-ml
