Package aima.core.learning.learners

Examples of aima.core.learning.learners.DecisionTreeLearner.predict()

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    DataSet ds2 = ds.emptyDataSet();
    Assert.assertEquals(0, ds2.size());

    learner.train(ds2);
    Assert.assertEquals("Unable To Classify",
        learner.predict(ds.getExample(0)));
  }

  @Test
  public void testClassificationReturnedWhenAllExamplesHaveTheSameClassification()
      throws Exception {
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    ds2.add(ds.getExample(0));
    ds2.add(ds.getExample(2));
    ds2.add(ds.getExample(3));

    learner.train(ds2);
    Assert.assertEquals("Yes", learner.predict(ds.getExample(0)));
  }

  @Test
  public void testMajorityReturnedWhenAttributesToExamineIsEmpty()
      throws Exception {
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    ds2.add(ds.getExample(2));
    ds2.add(ds.getExample(3));
    ds2.setSpecification(new MockDataSetSpecification("will_wait"));

    learner.train(ds2);
    Assert.assertEquals("Yes", learner.predict(ds.getExample(1)));
  }

  @Test
  public void testInducedTreeClassifiesDataSetCorrectly() throws Exception {
    DataSet ds = DataSetFactory.getRestaurantDataSet();
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