@Test
public void testUserItemVector() {
ALSSpeedModel model = new ALSSpeedModel(2);
assertEquals(2, model.getFeatures());
model.setUserVector("U1", new float[] {1.5f, -2.5f});
assertArrayEquals(new float[] {1.5f, -2.5f}, model.getUserVector("U1"));
model.setItemVector("I0", new float[] {0.5f, 0.0f});
assertArrayEquals(new float[] {0.5f, 0.0f}, model.getItemVector("I0"));
}
@Test
public void testFractionLoaded() {
assertEquals(1.0f, new ALSSpeedModel(2).getFractionLoaded());
ALSSpeedModel model = new ALSSpeedModel(2);
model.retainRecentAndUserIDs(Collections.singleton("U1"));
model.retainRecentAndItemIDs(Collections.singleton("I0"));
assertEquals(0.0f, model.getFractionLoaded());
model.setUserVector("U1", new float[] {1.5f, -2.5f});
assertEquals(0.5f, model.getFractionLoaded());
model.setItemVector("I0", new float[] {0.5f, 0.0f});
assertEquals(1.0f, model.getFractionLoaded());
}