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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: 1.6 $
Author:
Stuart Inglis (singlis@cs.waikato.ac.nz), Len Trigg (trigg@cs.waikato.ac.nz), 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.

Constructors

o IB1 
 public IB1()

Methods

o buildClassifier 
 public void buildClassifier(Instances instances) throws Exception
Generates the classifier.

Parameters:
instances - set of instances serving as training data
Throws: Exception
if the classifier has not been generated successfully
Overrides:
buildClassifier in class Classifier
o updateClassifier 
 public void updateClassifier(Instance instance) throws Exception
Updates the classifier.

Parameters:
instance - the instance to be put into the classifier
Throws: Exception
if the instance could not be included successfully
o classifyInstance 
 public double classifyInstance(Instance instance) throws Exception
Classifies the given test instance.

Parameters:
instance - the instance to be classified
Returns:
the predicted class for the instance
Throws: Exception
if the instance can't be classified
Overrides:
classifyInstance in class Classifier
o toString 
 public String toString()
Returns a description of this classifier.

Returns:
a description of this classifier as a string.
Overrides:
toString in class Object
o main 
 public static void main(String argv[])
Main method for testing this class.

Parameters:
argv - should contain command line arguments for evaluation (see Evaluation). 
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