SupportVectorMachine::setVarPath() - Code Metrics - Inspection of "New methods: setBinPath, setVarPath in SupportVect..." - php-ai/php-ml - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#73)

by Arkadiusz

created 2017-04-19 20:31 UTC

SupportVectorMachine::setVarPath() A

↳ Parent: SupportVectorMachine

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	6
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	1

<?php

declare(strict_types=1);

namespace Phpml\SupportVectorMachine;

use Phpml\Helper\Trainable;

class SupportVectorMachine
{
    use Trainable;

    /**
     * @var int
     */
    private $type;

    /**
     * @var int
     */
    private $kernel;

    /**
     * @var float
     */
    private $cost;

    /**
     * @var float
     */
    private $nu;

    /**
     * @var int
     */
    private $degree;

    /**
     * @var float
     */
    private $gamma;

    /**
     * @var float
     */
    private $coef0;

    /**
     * @var float
     */
    private $epsilon;

    /**
     * @var float
     */
    private $tolerance;

    /**
     * @var int
     */
    private $cacheSize;

    /**
     * @var bool
     */
    private $shrinking;

    /**
     * @var bool
     */
    private $probabilityEstimates;

    /**
     * @var string
     */
    private $binPath;

    /**
     * @var string
     */
    private $varPath;

    /**
     * @var string
     */
    private $model;

    /**
     * @var array
     */
    private $targets = [];

    /**
     * @param int        $type
     * @param int        $kernel
     * @param float      $cost
     * @param float      $nu
     * @param int        $degree
     * @param float|null $gamma
     * @param float      $coef0
     * @param float      $epsilon
     * @param float      $tolerance
     * @param int        $cacheSize
     * @param bool       $shrinking
     * @param bool       $probabilityEstimates
     */
    public function __construct(
        int $type, int $kernel, float $cost = 1.0, float $nu = 0.5, int $degree = 3,
        float $gamma = null, float $coef0 = 0.0, float $epsilon = 0.1, float $tolerance = 0.001,
        int $cacheSize = 100, bool $shrinking = true, bool $probabilityEstimates = false
    ) {
        $this->type = $type;
        $this->kernel = $kernel;
        $this->cost = $cost;
        $this->nu = $nu;
        $this->degree = $degree;
        $this->gamma = $gamma;
        $this->coef0 = $coef0;
        $this->epsilon = $epsilon;
        $this->tolerance = $tolerance;
        $this->cacheSize = $cacheSize;
        $this->shrinking = $shrinking;
        $this->probabilityEstimates = $probabilityEstimates;

        $rootPath = realpath(implode(DIRECTORY_SEPARATOR, [__DIR__, '..', '..', '..'])).DIRECTORY_SEPARATOR;

        $this->binPath = $rootPath.'bin'.DIRECTORY_SEPARATOR.'libsvm'.DIRECTORY_SEPARATOR;
        $this->varPath = $rootPath.'var'.DIRECTORY_SEPARATOR;
    }

    /**
     * @param string $binPath
     */
    public function setBinPath(string $binPath)
    {
        $this->binPath = $binPath;

        return $this;
    }

    /**
     * @param string $varPath
     */
    public function setVarPath(string $varPath)
    {
        $this->varPath = $varPath;

        return $this;
    }

    /**
     * @param array $samples
     * @param array $targets
     */
    public function train(array $samples, array $targets)
    {
        $this->samples = array_merge($this->samples, $samples);
        $this->targets = array_merge($this->targets, $targets);

        $trainingSet = DataTransformer::trainingSet($this->samples, $this->targets, in_array($this->type, [Type::EPSILON_SVR, Type::NU_SVR]));
        file_put_contents($trainingSetFileName = $this->varPath.uniqid('phpml', true), $trainingSet);
        $modelFileName = $trainingSetFileName.'-model';

        $command = $this->buildTrainCommand($trainingSetFileName, $modelFileName);
        $output = '';
        exec(escapeshellcmd($command), $output);

        $this->model = file_get_contents($modelFileName);

        unlink($trainingSetFileName);
        unlink($modelFileName);
    }

    /**
     * @return string
     */
    public function getModel()
    {
        return $this->model;
    }

    /**
     * @param array $samples
     *
     * @return array
     */
    public function predict(array $samples)
    {
        $testSet = DataTransformer::testSet($samples);
        file_put_contents($testSetFileName = $this->varPath.uniqid('phpml', true), $testSet);
        file_put_contents($modelFileName = $testSetFileName.'-model', $this->model);
        $outputFileName = $testSetFileName.'-output';

        $command = sprintf('%ssvm-predict%s %s %s %s', $this->binPath, $this->getOSExtension(), $testSetFileName, $modelFileName, $outputFileName);
        $output = '';
        exec(escapeshellcmd($command), $output);

        $predictions = file_get_contents($outputFileName);

        unlink($testSetFileName);
        unlink($modelFileName);
        unlink($outputFileName);

        if (in_array($this->type, [Type::C_SVC, Type::NU_SVC])) {
            $predictions = DataTransformer::predictions($predictions, $this->targets);
        } else {
            $predictions = explode(PHP_EOL, trim($predictions));
        }

        if (!is_array($samples[0])) {
            return $predictions[0];
        }

        return $predictions;
    }

    /**
     * @return string
     */
    private function getOSExtension()
    {
        $os = strtoupper(substr(PHP_OS, 0, 3));
        if ($os === 'WIN') {
            return '.exe';
        } elseif ($os === 'DAR') {
            return '-osx';
        }

        return '';
    }

    /**
     * @param $trainingSetFileName
     * @param $modelFileName
     *
     * @return string
     */
    private function buildTrainCommand(string $trainingSetFileName, string $modelFileName): string
    {
        return sprintf('%ssvm-train%s -s %s -t %s -c %s -n %s -d %s%s -r %s -p %s -m %s -e %s -h %d -b %d %s %s',
            $this->binPath,
            $this->getOSExtension(),
            $this->type,
            $this->kernel,
            $this->cost,
            $this->nu,
            $this->degree,
            $this->gamma !== null ? ' -g '.$this->gamma : '',
            $this->coef0,
            $this->epsilon,
            $this->cacheSize,
            $this->tolerance,
            $this->shrinking,
            $this->probabilityEstimates,
            escapeshellarg($trainingSetFileName),
            escapeshellarg($modelFileName)
        );
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace Phpml\SupportVectorMachine;
6
7			use Phpml\Helper\Trainable;
8
9			class SupportVectorMachine
10			{
11			use Trainable;
12
13			/**
14			* @var int
15			*/
16			private $type;
17
18			/**
19			* @var int
20			*/
21			private $kernel;
22
23			/**
24			* @var float
25			*/
26			private $cost;
27
28			/**
29			* @var float
30			*/
31			private $nu;
32
33			/**
34			* @var int
35			*/
36			private $degree;
37
38			/**
39			* @var float
40			*/
41			private $gamma;
42
43			/**
44			* @var float
45			*/
46			private $coef0;
47
48			/**
49			* @var float
50			*/
51			private $epsilon;
52
53			/**
54			* @var float
55			*/
56			private $tolerance;
57
58			/**
59			* @var int
60			*/
61			private $cacheSize;
62
63			/**
64			* @var bool
65			*/
66			private $shrinking;
67
68			/**
69			* @var bool
70			*/
71			private $probabilityEstimates;
72
73			/**
74			* @var string
75			*/
76			private $binPath;
77
78			/**
79			* @var string
80			*/
81			private $varPath;
82
83			/**
84			* @var string
85			*/
86			private $model;
87
88			/**
89			* @var array
90			*/
91			private $targets = [];
92
93			/**
94			* @param int $type
95			* @param int $kernel
96			* @param float $cost
97			* @param float $nu
98			* @param int $degree
99			* @param float\|null $gamma
100			* @param float $coef0
101			* @param float $epsilon
102			* @param float $tolerance
103			* @param int $cacheSize
104			* @param bool $shrinking
105			* @param bool $probabilityEstimates
106			*/
107			public function __construct(
108			int $type, int $kernel, float $cost = 1.0, float $nu = 0.5, int $degree = 3,
109			float $gamma = null, float $coef0 = 0.0, float $epsilon = 0.1, float $tolerance = 0.001,
110			int $cacheSize = 100, bool $shrinking = true, bool $probabilityEstimates = false
111			) {
112			$this->type = $type;
113			$this->kernel = $kernel;
114			$this->cost = $cost;
115			$this->nu = $nu;
116			$this->degree = $degree;
117			$this->gamma = $gamma;
118			$this->coef0 = $coef0;
119			$this->epsilon = $epsilon;
120			$this->tolerance = $tolerance;
121			$this->cacheSize = $cacheSize;
122			$this->shrinking = $shrinking;
123			$this->probabilityEstimates = $probabilityEstimates;
124
125			$rootPath = realpath(implode(DIRECTORY_SEPARATOR, [__DIR__, '..', '..', '..'])).DIRECTORY_SEPARATOR;
126
127			$this->binPath = $rootPath.'bin'.DIRECTORY_SEPARATOR.'libsvm'.DIRECTORY_SEPARATOR;
128			$this->varPath = $rootPath.'var'.DIRECTORY_SEPARATOR;
129			}
130
131			/**
132			* @param string $binPath
133			*/
134			public function setBinPath(string $binPath)
135			{
136			$this->binPath = $binPath;
137
138			return $this;
139			}
140
141			/**
142			* @param string $varPath
143			*/
144			public function setVarPath(string $varPath)
145			{
146			$this->varPath = $varPath;
147
148			return $this;
149			}
150
151			/**
152			* @param array $samples
153			* @param array $targets
154			*/
155			public function train(array $samples, array $targets)
156			{
157			$this->samples = array_merge($this->samples, $samples);
158			$this->targets = array_merge($this->targets, $targets);
159
160			$trainingSet = DataTransformer::trainingSet($this->samples, $this->targets, in_array($this->type, [Type::EPSILON_SVR, Type::NU_SVR]));
161			file_put_contents($trainingSetFileName = $this->varPath.uniqid('phpml', true), $trainingSet);
162			$modelFileName = $trainingSetFileName.'-model';
163
164			$command = $this->buildTrainCommand($trainingSetFileName, $modelFileName);
165			$output = '';
166			exec(escapeshellcmd($command), $output);
167
168			$this->model = file_get_contents($modelFileName);
169
170			unlink($trainingSetFileName);
171			unlink($modelFileName);
172			}
173
174			/**
175			* @return string
176			*/
177			public function getModel()
178			{
179			return $this->model;
180			}
181
182			/**
183			* @param array $samples
184			*
185			* @return array
186			*/
187			public function predict(array $samples)
188			{
189			$testSet = DataTransformer::testSet($samples);
190			file_put_contents($testSetFileName = $this->varPath.uniqid('phpml', true), $testSet);
191			file_put_contents($modelFileName = $testSetFileName.'-model', $this->model);
192			$outputFileName = $testSetFileName.'-output';
193
194			$command = sprintf('%ssvm-predict%s %s %s %s', $this->binPath, $this->getOSExtension(), $testSetFileName, $modelFileName, $outputFileName);
195			$output = '';
196			exec(escapeshellcmd($command), $output);
197
198			$predictions = file_get_contents($outputFileName);
199
200			unlink($testSetFileName);
201			unlink($modelFileName);
202			unlink($outputFileName);
203
204			if (in_array($this->type, [Type::C_SVC, Type::NU_SVC])) {
205			$predictions = DataTransformer::predictions($predictions, $this->targets);
206			} else {
207			$predictions = explode(PHP_EOL, trim($predictions));
208			}
209
210			if (!is_array($samples[0])) {
211			return $predictions[0];
212			}
213
214			return $predictions;
215			}
216
217			/**
218			* @return string
219			*/
220			private function getOSExtension()
221			{
222			$os = strtoupper(substr(PHP_OS, 0, 3));
223			if ($os === 'WIN') {
224			return '.exe';
225			} elseif ($os === 'DAR') {
226			return '-osx';
227			}
228
229			return '';
230			}
231
232			/**
233			* @param $trainingSetFileName
234			* @param $modelFileName
235			*
236			* @return string
237			*/
238			private function buildTrainCommand(string $trainingSetFileName, string $modelFileName): string
239			{
240			return sprintf('%ssvm-train%s -s %s -t %s -c %s -n %s -d %s%s -r %s -p %s -m %s -e %s -h %d -b %d %s %s',
241			$this->binPath,
242			$this->getOSExtension(),
243			$this->type,
244			$this->kernel,
245			$this->cost,
246			$this->nu,
247			$this->degree,
248			$this->gamma !== null ? ' -g '.$this->gamma : '',
249			$this->coef0,
250			$this->epsilon,
251			$this->cacheSize,
252			$this->tolerance,
253			$this->shrinking,
254			$this->probabilityEstimates,
255			escapeshellarg($trainingSetFileName),
256			escapeshellarg($modelFileName)
257			);
258			}
259			}
260

php-ai / php-ml

Pull Request — master (#73)

SupportVectorMachine::setVarPath() A

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