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<?php |
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declare(strict_types=1); |
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namespace Phpml; |
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class Pipeline implements Estimator |
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{ |
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/** |
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* @var array|Transformer[] |
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*/ |
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private $transformers; |
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/** |
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* @var Estimator |
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*/ |
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private $estimator; |
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/** |
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* @param array|Transformer[] $transformers |
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* @param Estimator $estimator |
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*/ |
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public function __construct(array $transformers, Estimator $estimator) |
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{ |
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foreach ($transformers as $transformer) { |
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$this->addTransformer($transformer); |
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} |
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$this->estimator = $estimator; |
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} |
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/** |
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* @param Transformer $transformer |
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*/ |
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public function addTransformer(Transformer $transformer) |
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{ |
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$this->transformers[] = $transformer; |
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} |
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/** |
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* @param Estimator $estimator |
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*/ |
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public function setEstimator(Estimator $estimator) |
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{ |
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$this->estimator = $estimator; |
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} |
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/** |
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* @return array|Transformer[] |
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*/ |
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public function getTransformers() |
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{ |
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return $this->transformers; |
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} |
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/** |
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* @return Estimator |
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*/ |
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public function getEstimator() |
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{ |
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return $this->estimator; |
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} |
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/** |
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* @param array $samples |
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* @param array $targets |
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*/ |
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public function train(array $samples, array $targets) |
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{ |
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foreach ($this->transformers as $transformer) { |
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$transformer->fit($samples); |
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$transformer->transform($samples); |
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} |
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$this->estimator->train($samples, $targets); |
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} |
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/** |
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* @param array $samples |
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* |
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* @return mixed |
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*/ |
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public function predict(array $samples) |
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{ |
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$this->transformSamples($samples); |
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return $this->estimator->predict($samples); |
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} |
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/** |
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* @param array $samples |
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*/ |
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private function transformSamples(array &$samples) |
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{ |
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foreach ($this->transformers as $transformer) { |
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$transformer->transform($samples); |
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} |
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} |
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} |
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php-ai /
php-ml
