PHP Phpml\Math\Kernel RBF::compute Examples

compute() public method

public compute ( float $a, float $b ) : float
$a	float
$b	float
return	float

Example #1

File: RBFTest.php Project: php-ai/php-ml

 public function testComputeRBFKernelFunction()
 {
     $rbf = new RBF($gamma = 0.001);
     $this->assertEquals(1, $rbf->compute([1, 2], [1, 2]));
     $this->assertEquals(0.97336, $rbf->compute([1, 2, 3], [4, 5, 6]), '', $delta = 0.0001);
     $this->assertEquals(0.00011, $rbf->compute([4, 5], [1, 100]), '', $delta = 0.0001);
     $rbf = new RBF($gamma = 0.2);
     $this->assertEquals(1, $rbf->compute([1, 2], [1, 2]));
     $this->assertEquals(0.00451, $rbf->compute([1, 2, 3], [4, 5, 6]), '', $delta = 0.0001);
     $this->assertEquals(0, $rbf->compute([4, 5], [1, 100]));
 }