List of classAttribute() Examples

Examples of classAttribute()

weka.core.Instance.classAttribute()
Returns class attribute. @return the class attribute @throws UnassignedDatasetException if the class is not set or theinstance doesn't have access to a dataset
weka.core.Instances.classAttribute()
Returns the class attribute. @return the class attribute @throws UnassignedClassException if the class is not set

Examples of weka.core.Instance.classAttribute()

      Instance instance = instEnum.nextElement();
      Assert.assertFalse(instance.classIsMissing());Assert.assertEquals(5,instance.numValues());
      Assert.assertFalse(instance.hasMissingValue());
      Assert.assertTrue(instance.classAttribute().isNominal());
      Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
      Assert.assertEquals("true",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
  
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[0].isNominal());
      Assert.assertEquals("REL statechum score",testClassifier.attributesOfAnInstance[0].name());

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Examples of weka.core.Instance.classAttribute()

      Instance instance = instEnum.nextElement();
      Assert.assertFalse(instance.classIsMissing());Assert.assertEquals(5,instance.numValues());
      Assert.assertFalse(instance.hasMissingValue());
      Assert.assertTrue(instance.classAttribute().isNominal());
      Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
      Assert.assertEquals("true",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
  
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[0].isNominal());
      Assert.assertEquals("REL statechum score",testClassifier.attributesOfAnInstance[0].name());

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Examples of weka.core.Instance.classAttribute()

      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));
    }
    
    {// pairD - incorrect pair, compared only with E
      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));

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Examples of weka.core.Instance.classAttribute()

      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));    
    }
    
    {// pairE - incorrect pair, compared only with D
      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));// this should perhaps return ONE but we are effectively comparing floating-point values by equality so the outcome is not ceertain

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Examples of weka.core.Instance.classAttribute()

      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));    
    }
    
    {// pairE - incorrect pair, compared only with D
      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));// this should perhaps return ONE but we are effectively comparing floating-point values by equality so the outcome is not ceertain

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Examples of weka.core.Instance.classAttribute()

    WekaDataCollector classifier = new WekaDataCollector();
    classifier.initialise("TestCreateInstances2", 10, new ArrayList<PairRank>(),0);
    Instance instance = classifier.constructInstance(new int []{},false);
    Assert.assertFalse(instance.classIsMissing());Assert.assertEquals(1,instance.numValues());
    Assert.assertFalse(instance.hasMissingValue());
    Assert.assertTrue(instance.classAttribute().isNominal());
    Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
    Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
    Assert.assertEquals("false",instance.stringValue(instance.classAttribute()));
  }

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Examples of weka.core.Instance.classAttribute()

    classifier.initialise("TestCreateInstances2", 10, new ArrayList<PairRank>(),0);
    Instance instance = classifier.constructInstance(new int []{},false);
    Assert.assertFalse(instance.classIsMissing());Assert.assertEquals(1,instance.numValues());
    Assert.assertFalse(instance.hasMissingValue());
    Assert.assertTrue(instance.classAttribute().isNominal());
    Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
    Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
    Assert.assertEquals("false",instance.stringValue(instance.classAttribute()));
  }
  
  /** Construction of instances. */

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Examples of weka.core.Instance.classAttribute()

    Instance instance = classifier.constructInstance(new int []{},false);
    Assert.assertFalse(instance.classIsMissing());Assert.assertEquals(1,instance.numValues());
    Assert.assertFalse(instance.hasMissingValue());
    Assert.assertTrue(instance.classAttribute().isNominal());
    Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
    Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
    Assert.assertEquals("false",instance.stringValue(instance.classAttribute()));
  }
  
  /** Construction of instances. */
  @Test

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Examples of weka.core.Instance.classAttribute()

    Instance instance = classifier.constructInstance(new int []{},false);
    Assert.assertFalse(instance.classIsMissing());Assert.assertEquals(1,instance.numValues());
    Assert.assertFalse(instance.hasMissingValue());
    Assert.assertTrue(instance.classAttribute().isNominal());
    Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
    Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
    Assert.assertEquals("false",instance.stringValue(instance.classAttribute()));
  }
  
  /** Construction of instances. */
  @Test

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Examples of weka.core.Instances.classAttribute()

              } else {
          if (classifierToUse instanceof PMMLClassifier) {
            // set the class based on information in the mining schema
            Instances miningSchemaStructure = 
              ((PMMLClassifier)classifierToUse).getMiningSchema().getMiningSchemaAsInstances();
            String className = miningSchemaStructure.classAttribute().name();
            Attribute classMatch = userTestStructure.attribute(className);
            if (classMatch == null) {
              throw new Exception("Can't find a match for the PMML target field " 
            + className + " in the "
            + "test instances!");

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