public function testMultiply()
{
$matrixData1 = [[1, 4], [2, 5], [3, 6]];
$matrixData2 = [[7, 8, 9], [10, 11, 12]];
$matrixData3 = [[47, 52, 57], [64, 71, 78], [81, 90, 99]];
$matrix1 = Matrix::matrixFromDoubles($matrixData1);
$matrix2 = Matrix::matrixFromDoubles($matrixData2);
$matrix3 = Matrix::matrixFromDoubles($matrixData3);
$result = MatrixMath\multiply($matrix1, $matrix2);
$this->assertTrue($result->equals($matrix3));
}
/**
* Train the neural network for the specified pattern.
* The neural network
* can be trained for more than one pattern. To do this simply call the
* train method more than once.
*
* @param
* MLData pattern
* The pattern to train for.
*/
public function addPattern(MLData $pattern)
{
if ($pattern->size() != $this->getNeuronCount()) {
throw new NeuralNetworkError("Network with " + $this->getNeuronCount() + " neurons, cannot learn a pattern of size " + $pattern->size());
}
// Create a row matrix from the input, convert boolean to bipolar
$m2 = Matrix::createRowMatrix($pattern->getData());
// Transpose the matrix and multiply by the original input matrix
$m1 = MatrixMath\transpose($m2);
$m3 = MatrixMath\multiply($m1, $m2);
// matrix 3 should be square by now, so create an identity
// matrix of the same size.
$identity = MatrixMath\identity($m3->getRows());
// subtract the identity matrix
$m4 = MatrixMath\subtract($m3, $identity);
// now add the calculated matrix, for this pattern, to the
// existing weight matrix.
$this->convertHopfieldMatrix($m4);
}
public function testMatrixMultiply()
{
$a = [[1, 0, 2], [-1, 3, 1]];
$b = [[3, 1], [2, 1], [1, 0]];
$c = [[5, 1], [4, 2]];
$matrixA = Matrix::matrixFromDoubles($a);
$matrixB = Matrix::matrixFromDoubles($b);
$matrixC = Matrix::matrixFromDoubles($c);
$result = clone $matrixA;
$result = MatrixMath\multiply($matrixA, $matrixB);
$this->assertTrue($result->equals($matrixC));
$a2 = [[1, 2, 3, 4], [5, 6, 7, 8]];
$b2 = [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12]];
$c2 = [[70, 80, 90], [158, 184, 210]];
$matrixA = Matrix::matrixFromDoubles($a2);
$matrixB = Matrix::matrixFromDoubles($b2);
$matrixC = Matrix::matrixFromDoubles($c2);
$result = MatrixMath\multiply($matrixA, $matrixB);
$this->assertTrue($result->equals($matrixC));
$result = clone $matrixB;
try {
MatrixMath\multiply($matrixB, $matrixA);
$this->assertTrue(false);
} catch (MatrixError $e) {
}
}
