php-ml/tests/Phpml/PipelineTest.php

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<?php
declare (strict_types = 1);
namespace tests;
use Phpml\Classification\SVC;
use Phpml\FeatureExtraction\TfIdfTransformer;
use Phpml\Pipeline;
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use Phpml\Preprocessing\Imputer;
use Phpml\Preprocessing\Normalizer;
use Phpml\Preprocessing\Imputer\Strategy\MostFrequentStrategy;
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class PipelineTest extends \PHPUnit_Framework_TestCase
{
public function testPipelineConstruction()
{
$transformers = [
new TfIdfTransformer(),
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];
$estimator = new SVC();
$pipeline = new Pipeline($transformers, $estimator);
$this->assertEquals($transformers, $pipeline->getTransformers());
$this->assertEquals($estimator, $pipeline->getEstimator());
}
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public function testPipelineWorkflow()
{
$transformers = [
new Imputer(null, new MostFrequentStrategy()),
new Normalizer(),
];
$estimator = new SVC();
$samples = [
[1, -1, 2],
[2, 0, null],
[null, 1, -1],
];
$targets = [
4,
1,
4,
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];
$pipeline = new Pipeline($transformers, $estimator);
$pipeline->train($samples, $targets);
$predicted = $pipeline->predict([[0, 0, 0]]);
$this->assertEquals(4, $predicted[0]);
}
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}