net.sf.classifier4J.vector
Class VectorClassifier

java.lang.Object
  |
  +--net.sf.classifier4J.AbstractClassifier
        |
        +--net.sf.classifier4J.AbstractCategorizedTrainableClassifier
              |
              +--net.sf.classifier4J.vector.VectorClassifier

All Implemented Interfaces:

ICategorisedClassifier, IClassifier, ITrainable, ITrainableClassifier

public class VectorClassifier

extends AbstractCategorizedTrainableClassifier

Field Summary

static double

DEFAULT_VECTORCLASSIFIER_CUTOFF

Fields inherited from class net.sf.classifier4J.AbstractClassifier

cutoff

Fields inherited from interface net.sf.classifier4J.ICategorisedClassifier

DEFAULT_CATEGORY

Fields inherited from interface net.sf.classifier4J.IClassifier

DEFAULT_CUTOFF, LOWER_BOUND, NEUTRAL_PROBABILITY, UPPER_BOUND

Constructor Summary

VectorClassifier()

VectorClassifier(TermVectorStorage storage)

Method Summary

double	classify(java.lang.String category, java.lang.String input) Function to determine the probability string matches a criteria for a given category.
protected int[]	generateTermValuesVector(java.lang.String[] terms, java.util.Map wordFrequencies)
boolean	isMatch(java.lang.String category, java.lang.String input) Function to determine if a string matches a criteria for a given category
void	teachMatch(java.lang.String category, java.lang.String input)
void	teachNonMatch(java.lang.String category, java.lang.String input)

Methods inherited from class net.sf.classifier4J.AbstractCategorizedTrainableClassifier

classify, teachMatch, teachNonMatch

Methods inherited from class net.sf.classifier4J.AbstractClassifier

getMatchCutoff, isMatch, isMatch, setMatchCutoff

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.classifier4J.IClassifier

isMatch, isMatch, setMatchCutoff

Field Detail

DEFAULT_VECTORCLASSIFIER_CUTOFF

public static double DEFAULT_VECTORCLASSIFIER_CUTOFF

Constructor Detail

VectorClassifier

public VectorClassifier()

VectorClassifier

public VectorClassifier(TermVectorStorage storage)

Method Detail

classify

public double classify(java.lang.String category,
                       java.lang.String input)
                throws ClassifierException

Description copied from interface: ICategorisedClassifier

Function to determine the probability string matches a criteria for a given category.

Parameters:

category - the category to check against

input - the string to classify

Returns:

the likelyhood that this string is a match for this net.sf.classifier4J. 1 means 100% likely.

Throws:

ClassifierException - If a fatal problem occurs. For example, the database is unavailable.

See Also:

ICategorisedClassifier.classify(java.lang.String, java.lang.String)

isMatch

public boolean isMatch(java.lang.String category,
                       java.lang.String input)
                throws ClassifierException

Description copied from interface: ICategorisedClassifier

Function to determine if a string matches a criteria for a given category

Parameters:

category - the category to check against

input - the string to classify

Returns:

true if the input string has a probability >= the cutoff probability of matching

Throws:

ClassifierException - If a fatal problem occurs. For example, the database is unavailable.

See Also:

ICategorisedClassifier.isMatch(java.lang.String, java.lang.String)

teachMatch

public void teachMatch(java.lang.String category,
                       java.lang.String input)
                throws ClassifierException

ClassifierException

See Also:

ITrainable.teachMatch(java.lang.String, java.lang.String)

generateTermValuesVector

protected int[] generateTermValuesVector(java.lang.String[] terms,
                                         java.util.Map wordFrequencies)

Parameters:

terms -

wordFrequencies -

Returns:

teachNonMatch

public void teachNonMatch(java.lang.String category,
                          java.lang.String input)
                   throws ClassifierException

ClassifierException

See Also:

ITrainable.teachNonMatch(java.lang.String, java.lang.String)