74 lines
1.6 KiB
PHP
74 lines
1.6 KiB
PHP
<?php
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namespace Rubix\ML\Tests\Kernels\Distance;
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use Rubix\ML\Kernels\Distance\Hamming;
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use Rubix\ML\Kernels\Distance\Distance;
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use PHPUnit\Framework\TestCase;
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use Generator;
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/**
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* @group Distances
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* @covers \Rubix\ML\Kernels\Distance\Hamming
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*/
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class HammingTest extends TestCase
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{
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/**
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* @var \Rubix\ML\Kernels\Distance\Hamming
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*/
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protected $kernel;
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/**
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* @before
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*/
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protected function setUp() : void
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{
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$this->kernel = new Hamming();
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}
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/**
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* @test
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*/
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public function build() : void
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{
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$this->assertInstanceOf(Hamming::class, $this->kernel);
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$this->assertInstanceOf(Distance::class, $this->kernel);
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}
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/**
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* @test
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* @dataProvider computeProvider
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*
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* @param string[] $a
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* @param string[] $b
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* @param float $expected
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*/
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public function compute(array $a, array $b, $expected) : void
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{
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$distance = $this->kernel->compute($a, $b);
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$this->assertGreaterThanOrEqual(0., $distance);
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$this->assertEquals($expected, $distance);
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}
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/**
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* @return \Generator<array>
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*/
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public function computeProvider() : Generator
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{
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yield [
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['soup', 'turkey', 'broccoli', 'cake'], ['salad', 'turkey', 'broccoli', 'pie'],
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2.0,
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];
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yield [
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['salad', 'ham', 'peas', 'jello'], ['bread', 'steak', 'potato', 'cake'],
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4.0,
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];
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yield [
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['toast', 'eggs', 'bacon'], ['toast', 'eggs', 'bacon'],
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0.0,
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];
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}
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}
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