All Packages  Class Hierarchy  This Package  Previous  Next  Index  WEKA's home

Class weka.classifiers.IB1

java.lang.Object
    |
    +----weka.classifiers.Classifier
            |
            +----weka.classifiers.IB1

public class IB1
extends Classifier
implements UpdateableClassifier
IB1-type classifier. Uses a simple distance measure to find the training instance closest to the given test instance, and predicts the same class as this training instance. If multiple instances are the same (smallest) distance to the test instance, the first one found is used. For more information, see

Aha, D., and D. Kibler (1991) "Instance-based learning algorithms", Machine Learning, vol.6, pp. 37-66.

Version:
$Revision: 1.8 $
Author:
Stuart Inglis (singlis@cs.waikato.ac.nz)
Author:
Len Trigg (trigg@cs.waikato.ac.nz)
Author:
Eibe Frank (eibe@cs.waikato.ac.nz)

Constructor Index

 o IB1()
 

Method Index

 o buildClassifier(Instances)
Generates the classifier.
 o classifyInstance(Instance)
Classifies the given test instance.
 o main(String[])
Main method for testing this class.
 o toString()
Returns a description of this classifier.
 o updateClassifier(Instance)
Updates the classifier.

Constructor Detail

 o IB1
public IB1()

Method Detail

 o buildClassifier
public void buildClassifier(Instances instances) throws java.lang.Exception
          Generates the classifier.
Parameters:
instances - set of instances serving as training data
Throws:
java.lang.Exception - if the classifier has not been generated successfully
Overrides:
buildClassifier in class Classifier
 o updateClassifier
public void updateClassifier(Instance instance) throws java.lang.Exception
          Updates the classifier.
Parameters:
instance - the instance to be put into the classifier
Throws:
java.lang.Exception - if the instance could not be included successfully
 o classifyInstance
public double classifyInstance(Instance instance) throws java.lang.Exception
          Classifies the given test instance.
Parameters:
instance - the instance to be classified
Returns:
the predicted class for the instance
Throws:
java.lang.Exception - if the instance can't be classified
Overrides:
classifyInstance in class Classifier
 o toString
public java.lang.String toString()
          Returns a description of this classifier.
Returns:
a description of this classifier as a string.
Overrides:
toString in class java.lang.Object
 o main
public static void main(java.lang.String argv[])
          Main method for testing this class.
Parameters:
argv - should contain command line arguments for evaluation (see Evaluation).

All Packages  Class Hierarchy  This Package  Previous  Next  Index  WEKA's home