Examples with Matrix org.apache.ignite.ml.math.Matrix used on opensource projects

Example 41 with Matrix

use of org.apache.ignite.ml.math.Matrix in project ignite by apache.

the class DiagonalMatrixTest method testSetGet.

/**
 */
@Test
public void testSetGet() {
    verifyDiagonal(testMatrix);
    final int size = MathTestConstants.STORAGE_SIZE;
    for (Matrix m : new Matrix[] { new DenseLocalOnHeapMatrix(size + 1, size), new DenseLocalOnHeapMatrix(size, size + 1) }) {
        fillMatrix(m);
        verifyDiagonal(new DiagonalMatrix(m));
    }
    final double[] data = new double[size];
    for (int i = 0; i < size; i++) data[i] = 1 + i;
    final Matrix m = new DiagonalMatrix(new DenseLocalOnHeapVector(data));
    assertEquals("Rows in matrix constructed from vector", size, m.rowSize());
    assertEquals("Cols in matrix constructed from vector", size, m.columnSize());
    for (int i = 0; i < size; i++) assertEquals(UNEXPECTED_VALUE + " at vector index " + i, data[i], m.get(i, i), 0d);
    verifyDiagonal(m);
    final Matrix m1 = new DiagonalMatrix(data);
    assertEquals("Rows in matrix constructed from array", size, m1.rowSize());
    assertEquals("Cols in matrix constructed from array", size, m1.columnSize());
    for (int i = 0; i < size; i++) assertEquals(UNEXPECTED_VALUE + " at array index " + i, data[i], m1.get(i, i), 0d);
    verifyDiagonal(m1);
}

Example 42 with Matrix

use of org.apache.ignite.ml.math.Matrix in project ignite by apache.

the class FunctionMatrixConstructorTest method basicTest.

/**
 */
private void basicTest(int rows, int cols) {
    double[][] data = new double[rows][cols];
    for (int row = 0; row < rows; row++) for (int col = 0; col < cols; col++) data[row][col] = row * cols + row;
    Matrix mReadOnly = new FunctionMatrix(rows, cols, (i, j) -> data[i][j]);
    assertEquals("Rows in matrix.", rows, mReadOnly.rowSize());
    assertEquals("Cols in matrix.", cols, mReadOnly.columnSize());
    for (int row = 0; row < rows; row++) for (int col = 0; col < cols; col++) {
        assertEquals("Unexpected value at " + row + "x" + col, data[row][col], mReadOnly.get(row, col), 0d);
        boolean expECaught = false;
        try {
            mReadOnly.set(row, col, 0.0);
        } catch (UnsupportedOperationException uoe) {
            expECaught = true;
        }
        assertTrue("Expected exception wasn't thrown at " + row + "x" + col, expECaught);
    }
    Matrix m = new FunctionMatrix(rows, cols, (i, j) -> data[i][j], (i, j, val) -> data[i][j] = val);
    assertEquals("Rows in matrix, with setter function.", rows, m.rowSize());
    assertEquals("Cols in matrix, with setter function.", cols, m.columnSize());
    for (int row = 0; row < rows; row++) for (int col = 0; col < cols; col++) {
        assertEquals("Unexpected value at " + row + "x" + col, data[row][col], m.get(row, col), 0d);
        m.set(row, col, -data[row][col]);
    }
    for (int row = 0; row < rows; row++) for (int col = 0; col < cols; col++) assertEquals("Unexpected value set at " + row + "x" + col, -(row * cols + row), m.get(row, col), 0d);
    assertTrue("Incorrect copy for empty matrix.", m.copy().equals(m));
}

Example 43 with Matrix

use of org.apache.ignite.ml.math.Matrix in project ignite by apache.

the class FunctionMatrixConstructorTest method basicTest.

/**
 */
@Test
public void basicTest() {
    for (int rows : new int[] { 1, 2, 3 }) for (int cols : new int[] { 1, 2, 3 }) basicTest(rows, cols);
    Matrix m = new FunctionMatrix(1, 1, (i, j) -> 1d);
    // noinspection EqualsWithItself
    assertTrue("Matrix is expected to be equal to self.", m.equals(m));
    // noinspection ObjectEqualsNull
    assertFalse("Matrix is expected to be not equal to null.", m.equals(null));
}

Example 44 with Matrix

use of org.apache.ignite.ml.math.Matrix in project ignite by apache.

the class MatrixImplementationFixtures method consumeSampleMatrix.

/**
 */
void consumeSampleMatrix(BiConsumer<Matrix, String> consumer) {
    for (Supplier<Iterable<Matrix>> fixtureSupplier : suppliers) {
        final Iterable<Matrix> fixture = fixtureSupplier.get();
        for (Matrix matrix : fixture) {
            consumer.accept(matrix, fixture.toString());
            matrix.destroy();
        }
    }
}

Example 45 with Matrix

use of org.apache.ignite.ml.math.Matrix in project ignite by apache.

the class MatrixImplementationsTest method testDeterminant.

/**
 */
@Test
public void testDeterminant() {
    consumeSampleMatrix((m, desc) -> {
        if (m.rowSize() != m.columnSize())
            return;
        if (ignore(m.getClass()))
            return;
        double[][] doubles = fillIntAndReturn(m);
        if (m.rowSize() == 1) {
            assertEquals("Unexpected value " + desc, m.determinant(), doubles[0][0], 0d);
            return;
        }
        if (m.rowSize() == 2) {
            double det = doubles[0][0] * doubles[1][1] - doubles[0][1] * doubles[1][0];
            assertEquals("Unexpected value " + desc, m.determinant(), det, 0d);
            return;
        }
        if (m.rowSize() > 512)
            // IMPL NOTE if row size >= 30000 it takes unacceptably long for normal test run.
            return;
        Matrix diagMtx = m.like(m.rowSize(), m.columnSize());
        diagMtx.assign(0);
        for (int i = 0; i < m.rowSize(); i++) diagMtx.set(i, i, m.get(i, i));
        double det = 1;
        for (int i = 0; i < diagMtx.rowSize(); i++) det *= diagMtx.get(i, i);
        try {
            assertEquals("Unexpected value " + desc, det, diagMtx.determinant(), DEFAULT_DELTA);
        } catch (Exception e) {
            System.out.println(desc);
            throw e;
        }
    });
}