/** Test of createUniformRandom method, of class MatrixFactory. */
public void testCreateUniformRandom() {
System.out.println("createUniformRandom");
Matrix m = this.createRandomMatrix();
MatrixFactory<?> factory = this.createFactory();
int M = m.getNumRows();
int N = m.getNumColumns();
Matrix mr = factory.createUniformRandom(M, N, -RANGE, RANGE, random);
assertNotNull(mr);
assertNotSame(m, mr);
assertEquals(M, mr.getNumRows());
assertEquals(N, mr.getNumColumns());
boolean nonzero = false;
for (int i = 0; i < M; i++) {
for (int j = 0; j < N; j++) {
double value = mr.getElement(i, j);
if (value != 0.0) {
nonzero = true;
if ((value < -RANGE) || (value > RANGE)) {
fail("Nonzero value outside the given range!");
}
}
}
}
if (!nonzero) {
fail("I didn't find any nonzero values in your random matrix!!");
}
}
@Override
public Matrix init(int rows, int cols) {
final SparseMatrix rand = (SparseMatrix) smf.createUniformRandom(rows, cols, min, max, random);
final Matrix ret = smf.createMatrix(rows, cols);
for (int i = 0; i < rows; i++) {
if (this.random.nextDouble() > sparcity) {
ret.setRow(i, rand.getRow(i));
}
}
return ret;
}