Examples of aima.core.probability.hmm.FixedLagSmoothing

aima.core.probability.hmm.FixedLagSmoothing
@author Ravi Mohan

    Assert.assertEquals(4, fbResults.size());


    // RandomVariable fbDayOneResult = fbResults.get(1);
    // System.out.println(fbDayOneResult);


    FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 2);


    Assert.assertNull(fls.smooth(dayOnePerception));
    // System.out.println(fls.smooth(dayTwoPerception));
    // RandomVariable flsDayoneResult = fls.smooth(dayThreePerception);
    // System.out.println(flsDayoneResult);
  }

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    // System.out.println(flsDayoneResult);
  }


  @Test
  public void testOneStepFixedLagSmoothingOnRainManHmm() {
    FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 1);


    VarDistribution smoothedDayZero = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
    // umbrella on day one
    Assert.assertEquals(0.627,
        smoothedDayZero.getProbabilityOf(HmmConstants.RAINING),
        TOLERANCE);


    VarDistribution smoothedDayOne = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
    // umbrella on day two
    Assert.assertEquals(0.883,
        smoothedDayOne.getProbabilityOf(HmmConstants.RAINING),
        TOLERANCE);
    Assert.assertEquals(0.117,
        smoothedDayOne.getProbabilityOf(HmmConstants.NOT_RAINING),
        TOLERANCE);


    VarDistribution smoothedDayTwo = fls
        .smooth(HmmConstants.SEE_NO_UMBRELLA); // see no umbrella on
    // day three
    Assert.assertEquals(0.799,
        smoothedDayTwo.getProbabilityOf(HmmConstants.RAINING),
        TOLERANCE);

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        TOLERANCE);
  }


  @Test
  public void testOneStepFixedLagSmoothingOnRainManHmmWithDifferingEvidence() {
    FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 1);


    VarDistribution smoothedDayZero = fls.smooth(HmmConstants.SEE_UMBRELLA);// see
    // umbrella on day one
    Assert.assertEquals(0.627,
        smoothedDayZero.getProbabilityOf(HmmConstants.RAINING),
        TOLERANCE);


    VarDistribution smoothedDayOne = fls
        .smooth(HmmConstants.SEE_NO_UMBRELLA);// no umbrella on day
    // two
    Assert.assertEquals(0.702,
        smoothedDayOne.getProbabilityOf(HmmConstants.RAINING),
        TOLERANCE);

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        TOLERANCE);
  }


  @Test
  public void testTwoStepFixedLagSmoothingOnRainManHmm() {
    FixedLagSmoothing fls = new FixedLagSmoothing(rainmanHmm, 2);


    VarDistribution smoothedOne = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
    // umbrella on day one
    Assert.assertNull(smoothedOne);


    smoothedOne = fls.smooth(HmmConstants.SEE_UMBRELLA); // see
    // umbrella on day two
    Assert.assertEquals(0.653,
        smoothedOne.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
    Assert.assertEquals(0.346,
        smoothedOne.getProbabilityOf(HmmConstants.NOT_RAINING),
        TOLERANCE);


    VarDistribution smoothedTwo = fls.smooth(HmmConstants.SEE_UMBRELLA);// see
    // umbrella on day 3
    Assert.assertEquals(0.894,
        smoothedTwo.getProbabilityOf(HmmConstants.RAINING), TOLERANCE);
    Assert.assertEquals(0.105,
        smoothedTwo.getProbabilityOf(HmmConstants.NOT_RAINING),

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Related Classes of aima.core.probability.hmm.FixedLagSmoothing

aima.core.util.math.Matrix

aima.test.core.unit.probability.hmm.HMMTest

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