public class SparseRowRandomInitStrategy implements InitStrategy {
MatrixFactory<? extends Matrix> smf = MatrixFactory.getSparseDefault();
private double min;
private double max;
private Random random;
private double sparcity;
public SparseRowRandomInitStrategy(double min, double max, double sparcity, Random random) {
this.min = min;
this.max = max;
this.random = random;
this.sparcity = sparcity;
}
@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;
}
}
public class SparseOnesInitStrategy implements InitStrategy {
MatrixFactory<? extends Matrix> smf = MatrixFactory.getSparseDefault();
private Random random;
private double sparcity;
public SparseOnesInitStrategy(double sparcity, Random random) {
this.random = random;
this.sparcity = sparcity;
}
@Override
public Matrix init(int rows, int cols) {
final Matrix ret = smf.createMatrix(rows, cols);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
if (this.random.nextDouble() > sparcity) ret.setElement(i, j, 1d);
}
}
return ret;
}
}
/** Test of getSparseDefault method, of class MatrixFactory. */
public void testGetSparseDefault() {
System.out.println("getDefault");
MatrixFactory<? extends Matrix> result = MatrixFactory.getSparseDefault();
assertSame(MatrixFactory.DEFAULT_SPARSE_INSTANCE, result);
}