735 lines
18 KiB
PHP
735 lines
18 KiB
PHP
<?php
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namespace Rubix\ML\Tests\Datasets;
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use Rubix\ML\Report;
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use Rubix\ML\DataType;
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use Rubix\ML\Encoding;
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use Rubix\ML\Datasets\Dataset;
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use Rubix\ML\Extractors\NDJSON;
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use Rubix\ML\Datasets\Unlabeled;
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use PHPUnit\Framework\TestCase;
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use ArrayAccess;
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use Stringable;
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use Countable;
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use function Rubix\ML\array_transpose;
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/**
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* @group Datasets
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* @covers \Rubix\ML\Datasets\Unlabeled
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*/
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class UnlabeledTest extends TestCase
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{
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protected const SAMPLES = [
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['nice', 'furry', 'friendly', 4.0],
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['mean', 'furry', 'loner', -1.5],
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['nice', 'rough', 'friendly', 2.6],
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['mean', 'rough', 'friendly', -1.0],
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['nice', 'rough', 'friendly', 2.9],
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['nice', 'furry', 'loner', -5.0],
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];
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protected const TYPES = [
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DataType::CATEGORICAL,
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DataType::CATEGORICAL,
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DataType::CATEGORICAL,
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DataType::CONTINUOUS,
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];
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protected const WEIGHTS = [
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1, 1, 2, 1, 2, 3,
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];
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protected const RANDOM_SEED = 0;
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/**
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* @var \Rubix\ML\Datasets\Unlabeled
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*/
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protected $dataset;
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/**
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* @before
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*/
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protected function setUp() : void
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{
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$this->dataset = new Unlabeled(self::SAMPLES, false);
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srand(self::RANDOM_SEED);
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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(Unlabeled::class, $this->dataset);
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$this->assertInstanceOf(Dataset::class, $this->dataset);
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$this->assertInstanceOf(Countable::class, $this->dataset);
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$this->assertInstanceOf(ArrayAccess::class, $this->dataset);
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$this->assertInstanceOf(Stringable::class, $this->dataset);
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}
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/**
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* @test
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*/
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public function fromIterator() : void
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{
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$dataset = Unlabeled::fromIterator(new NDJSON('tests/test.ndjson'));
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$this->assertInstanceOf(Unlabeled::class, $dataset);
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}
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/**
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* @test
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*/
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public function stack() : void
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{
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$dataset1 = new Unlabeled([['sample1']]);
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$dataset2 = new Unlabeled([['sample2']]);
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$dataset3 = new Unlabeled([['sample3']]);
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$dataset = Unlabeled::stack([$dataset1, $dataset2, $dataset3]);
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$this->assertInstanceOf(Unlabeled::class, $dataset);
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$this->assertEquals(3, $dataset->numRows());
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$this->assertEquals(1, $dataset->numColumns());
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}
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/**
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* @test
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*/
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public function samples() : void
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{
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$this->assertEquals(self::SAMPLES, $this->dataset->samples());
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}
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/**
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* @test
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*/
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public function sample() : void
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{
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$this->assertEquals(self::SAMPLES[2], $this->dataset->sample(2));
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$this->assertEquals(self::SAMPLES[5], $this->dataset->sample(5));
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}
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/**
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* @test
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*/
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public function numRows() : void
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{
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$this->assertEquals(6, $this->dataset->numRows());
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}
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/**
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* @test
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*/
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public function column() : void
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{
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$expected = array_column(self::SAMPLES, 2);
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$this->assertEquals($expected, $this->dataset->column(2));
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}
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/**
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* @test
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*/
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public function numColumns() : void
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{
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$this->assertEquals(4, $this->dataset->numColumns());
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}
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/**
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* @test
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*/
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public function columnType() : void
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{
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$this->assertEquals(DataType::categorical(), $this->dataset->columnType(0));
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$this->assertEquals(DataType::categorical(), $this->dataset->columnType(1));
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$this->assertEquals(DataType::categorical(), $this->dataset->columnType(2));
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$this->assertEquals(DataType::continuous(), $this->dataset->columnType(3));
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}
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/**
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* @test
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*/
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public function columnTypes() : void
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{
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$expected = [
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DataType::categorical(),
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DataType::categorical(),
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DataType::categorical(),
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DataType::continuous(),
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];
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$this->assertEquals($expected, $this->dataset->columnTypes());
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}
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/**
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* @test
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*/
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public function uniqueTypes() : void
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{
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$this->assertCount(2, $this->dataset->uniqueTypes());
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}
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/**
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* @test
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*/
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public function homogeneous() : void
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{
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$this->assertFalse($this->dataset->homogeneous());
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}
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/**
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* @test
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*/
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public function shape() : void
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{
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$this->assertEquals([6, 4], $this->dataset->shape());
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}
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/**
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* @test
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*/
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public function size() : void
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{
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$this->assertEquals(24, $this->dataset->size());
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}
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/**
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* @test
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*/
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public function columns() : void
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{
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$expected = array_transpose(self::SAMPLES);
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$this->assertEquals($expected, $this->dataset->columns());
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}
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/**
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* @test
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*/
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public function transformColumn() : void
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{
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$dataset = $this->dataset->transformColumn(3, 'abs');
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$expected = [4.0, 1.5, 2.6, 1.0, 2.9, 5.0];
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$this->assertEquals($expected, $dataset->column(3));
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}
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/**
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* @test
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*/
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public function columnsByType() : void
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{
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$expected = array_slice(array_transpose(self::SAMPLES), 0, 3);
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$columns = $this->dataset->columnsByType(DataType::categorical());
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$this->assertEquals($expected, $columns);
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}
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/**
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* @test
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*/
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public function empty() : void
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{
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$this->assertFalse($this->dataset->empty());
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}
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/**
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* @test
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*/
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public function randomize() : void
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{
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$samples = $this->dataset->samples();
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$this->dataset->randomize();
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$this->assertNotEquals($samples, $this->dataset->samples());
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}
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/**
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* @test
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*/
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public function filterByColumn() : void
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{
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$isFriendly = function ($value) {
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return $value === 'friendly';
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};
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$filtered = $this->dataset->filterByColumn(2, $isFriendly);
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$expected = [
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['nice', 'furry', 'friendly', 4.0],
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['nice', 'rough', 'friendly', 2.6],
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['mean', 'rough', 'friendly', -1.0],
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['nice', 'rough', 'friendly', 2.9],
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];
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$this->assertEquals($expected, $filtered->samples());
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}
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/**
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* @test
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*/
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public function sortByColumn() : void
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{
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$this->dataset->sortByColumn(2);
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$sorted = array_column(self::SAMPLES, 2);
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sort($sorted);
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$this->assertEquals($sorted, $this->dataset->column(2));
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}
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/**
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* @test
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*/
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public function head() : void
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{
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$subset = $this->dataset->head(3);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(3, $subset);
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}
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/**
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* @test
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*/
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public function tail() : void
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{
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$subset = $this->dataset->tail(3);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(3, $subset);
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}
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/**
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* @test
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*/
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public function take() : void
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{
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$this->assertCount(6, $this->dataset);
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$subset = $this->dataset->take(3);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(3, $subset);
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$this->assertCount(3, $this->dataset);
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}
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/**
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* @test
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*/
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public function leave() : void
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{
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$this->assertCount(6, $this->dataset);
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$subset = $this->dataset->leave(1);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(5, $subset);
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$this->assertCount(1, $this->dataset);
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}
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/**
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* @test
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*/
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public function slice() : void
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{
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$this->assertCount(6, $this->dataset);
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$subset = $this->dataset->slice(2, 2);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(2, $subset);
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$this->assertCount(6, $this->dataset);
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}
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/**
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* @test
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*/
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public function splice() : void
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{
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$this->assertCount(6, $this->dataset);
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$subset = $this->dataset->splice(2, 2);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(2, $subset);
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$this->assertCount(4, $this->dataset);
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}
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/**
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* @test
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*/
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public function split() : void
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{
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[$left, $right] = $this->dataset->split(0.5);
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$this->assertCount(3, $left);
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$this->assertCount(3, $right);
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}
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/**
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* @test
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*/
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public function fold() : void
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{
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$folds = $this->dataset->fold(2);
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$this->assertCount(2, $folds);
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$this->assertCount(3, $folds[0]);
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$this->assertCount(3, $folds[1]);
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}
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/**
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* @test
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*/
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public function batch() : void
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{
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$batches = $this->dataset->batch(2);
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$this->assertCount(3, $batches);
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$this->assertCount(2, $batches[0]);
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$this->assertCount(2, $batches[1]);
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$this->assertCount(2, $batches[2]);
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}
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/**
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* @test
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*/
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public function partition() : void
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{
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[$left, $right] = $this->dataset->splitByColumn(2, 'loner');
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$this->assertInstanceOf(Unlabeled::class, $left);
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$this->assertInstanceOf(Unlabeled::class, $right);
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$this->assertCount(2, $left);
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$this->assertCount(4, $right);
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}
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/**
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* @test
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*/
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public function randomSubset() : void
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{
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$subset = $this->dataset->randomSubset(3);
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$this->assertCount(3, array_unique($subset->samples(), SORT_REGULAR));
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}
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/**
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* @test
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*/
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public function randomSubsetWithReplacement() : void
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{
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$subset = $this->dataset->randomSubsetWithReplacement(3);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(3, $subset);
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}
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/**
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* @test
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*/
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public function randomWeightedSubsetWithReplacement() : void
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{
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$subset = $this->dataset->randomWeightedSubsetWithReplacement(3, self::WEIGHTS);
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$this->assertInstanceOf(Unlabeled::class, $subset);
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$this->assertCount(3, $subset);
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}
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/**
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* @test
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*/
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public function merge() : void
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{
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$this->assertCount(count(self::SAMPLES), $this->dataset);
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$dataset = new Unlabeled([['nice', 'furry', 'friendly', 4.7]]);
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$merged = $this->dataset->merge($dataset);
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$this->assertCount(count(self::SAMPLES) + 1, $merged);
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$this->assertEquals(['nice', 'furry', 'friendly', 4.7], $merged->sample(6));
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}
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/**
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* @test
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*/
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public function join() : void
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{
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$this->assertEquals(count(current(self::SAMPLES)), $this->dataset->numColumns());
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$dataset = new Unlabeled([
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[1],
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[2],
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[3],
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[4],
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[5],
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[6],
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]);
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$joined = $this->dataset->join($dataset);
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$this->assertEquals(count(current(self::SAMPLES)) + 1, $joined->numColumns());
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$this->assertEquals(['mean', 'furry', 'loner', -1.5, 2], $joined->sample(1));
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$this->assertEquals(['nice', 'rough', 'friendly', 2.6, 3], $joined->sample(2));
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}
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/**
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* @test
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*/
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public function dropRow() : void
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{
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$dataset = $this->dataset->dropRow(1);
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$samples = [
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['nice', 'furry', 'friendly', 4.0],
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['nice', 'rough', 'friendly', 2.6],
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['mean', 'rough', 'friendly', -1.0],
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['nice', 'rough', 'friendly', 2.9],
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['nice', 'furry', 'loner', -5.0],
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];
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$this->assertInstanceOf(Unlabeled::class, $dataset);
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$this->assertEquals($samples, $dataset->samples());
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}
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/**
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* @test
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*/
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public function dropRows() : void
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{
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$dataset = $this->dataset->dropRows([1, 5]);
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$samples = [
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['nice', 'furry', 'friendly', 4.0],
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['nice', 'rough', 'friendly', 2.6],
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['mean', 'rough', 'friendly', -1.0],
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['nice', 'rough', 'friendly', 2.9],
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];
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$this->assertInstanceOf(Unlabeled::class, $dataset);
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$this->assertEquals($samples, $dataset->samples());
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}
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/**
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* @test
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*/
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public function dropColumn() : void
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{
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$dataset = $this->dataset->dropColumn(2);
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$samples = [
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['nice', 'furry', 4.0],
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['mean', 'furry', -1.5],
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['nice', 'rough', 2.6],
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['mean', 'rough', -1.0],
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['nice', 'rough', 2.9],
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['nice', 'furry', -5.0],
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];
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$this->assertInstanceOf(Unlabeled::class, $dataset);
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$this->assertEquals($samples, $dataset->samples());
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}
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/**
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* @test
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*/
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public function dropColumns() : void
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{
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$dataset = $this->dataset->dropColumns([0, 2]);
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$samples = [
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['furry', 4.0],
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['furry', -1.5],
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['rough', 2.6],
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['rough', -1.0],
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['rough', 2.9],
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['furry', -5.0],
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];
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$this->assertInstanceOf(Unlabeled::class, $dataset);
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$this->assertEquals($samples, $dataset->samples());
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}
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/**
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* @test
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*/
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public function describe() : void
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{
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$results = $this->dataset->describe();
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$expected = [
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[
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'column' => 0,
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'type' => 'categorical',
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'num_categories' => 2,
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'probabilities' => [
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'nice' => 0.6666666666666666,
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'mean' => 0.3333333333333333,
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],
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],
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[
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'column' => 1,
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'type' => 'categorical',
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'num_categories' => 2,
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'probabilities' => [
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'furry' => 0.5,
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'rough' => 0.5,
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],
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],
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[
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'column' => 2,
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'type' => 'categorical',
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'num_categories' => 2,
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'probabilities' => [
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'friendly' => 0.6666666666666666,
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'loner' => 0.3333333333333333,
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],
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],
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[
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'column' => 3,
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'type' => 'continuous',
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'mean' => 0.3333333333333333,
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'variance' => 9.792222222222222,
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'std_dev' => 3.129252661934191,
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'skewness' => -0.4481030843690633,
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'kurtosis' => -1.1330702741786107,
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'min' => -5.0,
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'25%' => -1.375,
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'median' => 0.8,
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'75%' => 2.825,
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'max' => 4.0,
|
|
],
|
|
];
|
|
|
|
$this->assertInstanceOf(Report::class, $results);
|
|
$this->assertEquals($expected, $results->toArray());
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function deduplicate() : void
|
|
{
|
|
$dataset = $this->dataset->deduplicate();
|
|
|
|
$this->assertCount(6, $dataset);
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function toArray() : void
|
|
{
|
|
$expected = [
|
|
['nice', 'furry', 'friendly', 4.0],
|
|
['mean', 'furry', 'loner', -1.5],
|
|
['nice', 'rough', 'friendly', 2.6],
|
|
['mean', 'rough', 'friendly', -1.0],
|
|
['nice', 'rough', 'friendly', 2.9],
|
|
['nice', 'furry', 'loner', -5.0],
|
|
];
|
|
|
|
$this->assertEquals($expected, $this->dataset->toArray());
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function toJson() : void
|
|
{
|
|
$expected = '[["nice","furry","friendly",4],["mean","furry","loner",-1.5],["nice","rough","friendly",2.6],["mean","rough","friendly",-1],["nice","rough","friendly",2.9],["nice","furry","loner",-5]]';
|
|
|
|
$encoding = $this->dataset->toJSON();
|
|
|
|
$this->assertInstanceOf(Encoding::class, $encoding);
|
|
$this->assertEquals($expected, $encoding);
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function toNDJSON() : void
|
|
{
|
|
$expected = '{"temperament":"nice","texture":"furry","sociability":"friendly","rating":4}' . PHP_EOL
|
|
. '{"temperament":"mean","texture":"furry","sociability":"loner","rating":-1.5}' . PHP_EOL
|
|
. '{"temperament":"nice","texture":"rough","sociability":"friendly","rating":2.6}' . PHP_EOL
|
|
. '{"temperament":"mean","texture":"rough","sociability":"friendly","rating":-1}' . PHP_EOL
|
|
. '{"temperament":"nice","texture":"rough","sociability":"friendly","rating":2.9}' . PHP_EOL
|
|
. '{"temperament":"nice","texture":"furry","sociability":"loner","rating":-5}' . PHP_EOL;
|
|
|
|
$encoding = $this->dataset->toNDJSON([
|
|
'temperament', 'texture', 'sociability', 'rating',
|
|
]);
|
|
|
|
$this->assertInstanceOf(Encoding::class, $encoding);
|
|
$this->assertEquals($expected, $encoding);
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function toCsv() : void
|
|
{
|
|
$expected = 'nice,furry,friendly,4' . PHP_EOL
|
|
. 'mean,furry,loner,-1.5' . PHP_EOL
|
|
. 'nice,rough,friendly,2.6' . PHP_EOL
|
|
. 'mean,rough,friendly,-1' . PHP_EOL
|
|
. 'nice,rough,friendly,2.9' . PHP_EOL
|
|
. 'nice,furry,loner,-5' . PHP_EOL;
|
|
|
|
$encoding = $this->dataset->toCSV();
|
|
|
|
$this->assertInstanceOf(Encoding::class, $encoding);
|
|
$this->assertEquals($expected, $encoding);
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function testCount() : void
|
|
{
|
|
$this->assertEquals(6, $this->dataset->count());
|
|
$this->assertCount(6, $this->dataset);
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function arrayAccess() : void
|
|
{
|
|
$expected = ['mean', 'furry', 'loner', -1.5];
|
|
|
|
$this->assertEquals($expected, $this->dataset[1]);
|
|
}
|
|
|
|
/**
|
|
* @test
|
|
*/
|
|
public function iterate() : void
|
|
{
|
|
$expected = [
|
|
['nice', 'furry', 'friendly', 4.0],
|
|
['mean', 'furry', 'loner', -1.5],
|
|
['nice', 'rough', 'friendly', 2.6],
|
|
['mean', 'rough', 'friendly', -1.0],
|
|
['nice', 'rough', 'friendly', 2.9],
|
|
['nice', 'furry', 'loner', -5.0],
|
|
];
|
|
|
|
$this->assertEquals($expected, iterator_to_array($this->dataset));
|
|
}
|
|
}
|