public function compute($value) : float
{
return 1 / (1 + exp(-$this->beta * $value));
}
/** * @param $beta * @param $expected * @param $value * * @dataProvider sigmoidProvider */ public function testSigmoidActivationFunction($beta, $expected, $value) { $sigmoid = new Sigmoid($beta); $this->assertEquals($expected, $sigmoid->compute($value), '', 0.001); }