| public smooth ( String perception ) : RandomVariable | ||
| perception | String | |
| return | RandomVariable | |
public void testTwoStepFixedLagSmoothingOnRainManHmm()
{
FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 2);
RandomVariable smoothedOne = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
// umbrella on day one
Assert.IsNull(smoothedOne);
smoothedOne = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
// umbrella on day two
Assert.AreEqual(0.653, smoothedOne
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
Assert.AreEqual(0.346, smoothedOne
.getProbabilityOf(HmmConstants.NOT_RAINING), TOLERANCE);
RandomVariable smoothedTwo = fls.smooth(HmmConstants.SEE_UMBRELLA);// see
// umbrella on day 3
Assert.AreEqual(0.894, smoothedTwo
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
Assert.AreEqual(0.105, smoothedTwo
.getProbabilityOf(HmmConstants.NOT_RAINING), TOLERANCE);
}
public void testOneStepFixedLagSmoothingOnRainManHmm()
{
FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 1);
RandomVariable smoothedDayZero = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
// umbrella on day one
Assert.AreEqual(0.627, smoothedDayZero
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
RandomVariable smoothedDayOne = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
// umbrella on day two
Assert.AreEqual(0.883, smoothedDayOne
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
Assert.AreEqual(0.117, smoothedDayOne
.getProbabilityOf(HmmConstants.NOT_RAINING), TOLERANCE);
RandomVariable smoothedDayTwo = fls
.smooth(HmmConstants.SEE_NO_UMBRELLA); // see no umbrella on
// day three
Assert.AreEqual(0.799, smoothedDayTwo
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
Assert.AreEqual(0.201, smoothedDayTwo
.getProbabilityOf(HmmConstants.NOT_RAINING), TOLERANCE);
}
public void testOneStepFixedLagSmoothingOnRainManHmmWithDifferingEvidence()
{
FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 1);
RandomVariable smoothedDayZero = fls.smooth(HmmConstants.SEE_UMBRELLA);// see
// umbrella on day one
Assert.AreEqual(0.627, smoothedDayZero
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
RandomVariable smoothedDayOne = fls
.smooth(HmmConstants.SEE_NO_UMBRELLA);// no umbrella on day
// two
Assert.AreEqual(0.702, smoothedDayOne
.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
Assert.AreEqual(0.297, smoothedDayOne
.getProbabilityOf(HmmConstants.NOT_RAINING), TOLERANCE);
}
public void testForwardBackwardAndFixedLagSmoothingGiveSameResults()
{
List<String> perceptions = new List<String>();
String dayOnePerception = HmmConstants.SEE_UMBRELLA;
String dayTwoPerception = HmmConstants.SEE_UMBRELLA;
String dayThreePerception = HmmConstants.SEE_NO_UMBRELLA;
perceptions.Add(dayOnePerception);
perceptions.Add(dayTwoPerception);
perceptions.Add(dayThreePerception);
List<RandomVariable> fbResults = rainmanHmm
.forward_backward(perceptions);
Assert.AreEqual(4, fbResults.Count);
// RandomVariable fbDayOneResult = fbResults.get(1);
// System.Console.WriteLine(fbDayOneResult);
FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 2);
Assert.IsNull(fls.smooth(dayOnePerception));
// System.Console.WriteLine(fls.smooth(dayTwoPerception));
// RandomVariable flsDayoneResult = fls.smooth(dayThreePerception);
// System.Console.WriteLine(flsDayoneResult);
}