@Test
public void testBug27() {
double[] tfVector = {0.0, 0.5, 0.0, 0.4, 0.0};
DenseVector dense = new DenseVector(tfVector, false);
SparseVector vectorTF = new SparseVector(dense);
vectorTF.compact();
assertTrue(vectorTF.getUsed() == 2); // vectorTF.getUsed() returns 5
for (Iterator<VectorEntry> it = vectorTF.iterator(); it.hasNext(); ) {
VectorEntry ve = it.next();
int index = ve.index();
double value = ve.get();
assertTrue(tfVector[index] == value);
}
}
/** Tries to store the matrix as compactly as possible */
public void compact() {
for (Vector v : rowD) ((SparseVector) v).compact();
}