nrc.fuzzy.jess
Class FuzzyFunctions.getDefaultSimilarityOperator

java.lang.Object
  |
  +--nrc.fuzzy.jess.FuzzyFunctions.getDefaultSimilarityOperator

All Implemented Interfaces:

jess.Userfunction

Enclosing class:

FuzzyFunctions

public class FuzzyFunctions.getDefaultSimilarityOperator

extends java.lang.Object

implements jess.Userfunction

Userfunction class:

Implements the Jess user function (get-default-similarity-operator)

The function takes no arguments and return an indicator of the way fuzzy similarity comparisons will be done. The values will be one of:

area - use ratio of aera of intersect and are of union (this is the default).
possibility - use possibility and necessity calculations (see java class SimilarityByPossibility).

Constructor Summary

FuzzyFunctions.getDefaultSimilarityOperator()

Method Summary

jess.Value	call(jess.ValueVector vv, jess.Context context)
java.lang.String	getName()

Methods inherited from class java.lang.Object

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

Constructor Detail

FuzzyFunctions.getDefaultSimilarityOperator

public FuzzyFunctions.getDefaultSimilarityOperator()

Method Detail

getName

public java.lang.String getName()

Specified by:

getName in interface jess.Userfunction

Returns:

String the name of the Jess function

call

public jess.Value call(jess.ValueVector vv,
                       jess.Context context)
                throws jess.JessException

Specified by:

call in interface jess.Userfunction

Parameters:

vv - a ValueVector with the function arguments (0 arguments).

context -

Returns:

an RU.SYMBOL with 'area' or 'possibility' as a value or throws a JessException if it fails (has arguments or not a recognized operator .... may be an internal error suggesting that the FuzzyJess function needs to be updated to reflect new global operators that have been added.

Throws:

jess.JessException