edu.ksu.cis.bnj.bbn.learning.score
Class MaximizeScore

java.lang.Object
  edu.ksu.cis.bnj.bbn.learning.LearnerScore
      edu.ksu.cis.bnj.bbn.learning.score.SparseScore
          edu.ksu.cis.bnj.bbn.learning.score.MaximizeScore

public class MaximizeScore

extends SparseScore

Measure_Score score from Friedman, Nachman, and Pe'er [1999] Measure_Score(X_i, X_j | B) = Score(X_i ; X_j, Pa(X_i), D)

Author:

William H. Hsu Last modified 03 Apr 2003

Field Summary

protected int	curNode
protected int	nodeArity
protected double	total
protected java.util.Hashtable	value2tally

Fields inherited from class edu.ksu.cis.bnj.bbn.learning.score.SparseScore

arityCache, attributeSize, maxArity, nodes, totalRows, tupleSize

Fields inherited from class edu.ksu.cis.bnj.bbn.learning.LearnerScore

NO_CANDIDATES, owner, tally

Constructor Summary

MaximizeScore()
default constructor for MaximizeScore

MaximizeScore(Learner l)
constructor for MaximizeScore given a Learner object

Method Summary

double	getScore(int curNode, int candidate, java.util.Set[] parentTable) Get the score
void	initialize() This is just to reset the cache.
protected void	iterateUniqueInstantiation(int depth, Tally tally) Recursively filter out the data according to the current node
protected void	precache()

Methods inherited from class edu.ksu.cis.bnj.bbn.learning.score.SparseScore

initializeCache

Methods inherited from class edu.ksu.cis.bnj.bbn.learning.LearnerScore

getTallyer, setData, setOwner

Methods inherited from class java.lang.Object

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

Field Detail

value2tally

protected java.util.Hashtable value2tally

total

protected double total

curNode

protected int curNode

nodeArity

protected int nodeArity

Constructor Detail

MaximizeScore

public MaximizeScore()

default constructor for MaximizeScore

MaximizeScore

public MaximizeScore(Learner l)

constructor for MaximizeScore given a Learner object

Parameters:

l -

Method Detail

precache

protected void precache()

getScore

public double getScore(int curNode,
                       int candidate,
                       java.util.Set[] parentTable)

Description copied from class: LearnerScore

Get the score

Specified by:

getScore in class LearnerScore

Parameters:

curNode - The index of the currently evaluated node

candidate - The index of the parent candidate

parentTable - The array of Sets of integers. Each integer in the set is the index of currently assembled parent of each node.

Returns:

double the score

See Also:

edu.ksu.cis.bnj.bbn.learning.LearnerScore#getScore(java.lang.String, java.util.Set)

iterateUniqueInstantiation

protected void iterateUniqueInstantiation(int depth,
                                          Tally tally)

Recursively filter out the data according to the current node

Parameters:

tally -

initialize

public void initialize()

This is just to reset the cache. Since it is not dependent on tuple numbers, we can simply ignore this.

Overrides:

initialize in class LearnerScore

See Also:

LearnerScore.initialize()