ve
Class FactorExpand

java.lang.Object
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  +--ve.Factor
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        +--ve.FactorExpand

public class FactorExpand

extends Factor

This the the class of factors that extend other factors to include more variables. It is used in FactorTimes. The values can be enumerated as needed using the EltsIterator.

Inner Class Summary

private class

FactorExpand.Itr

Field Summary

private Factor	fact the factor to be expanded.
private int	numExpandBlocks the number of blocks of variables to be exanded.
private int[]	valsBetween the values associated with the variables between those to be expanded.
private int[]	valsExpand the values associated with the variables to be expanded.

Fields inherited from class ve.Factor

BY_ASSIGN, BY_CPT, BY_DETERMINISTIC, BY_EXPANDING, BY_GENRULE, BY_MAXIMIZING, BY_MULTIPLYING, BY_NORMALIZING, BY_OBSERVED, BY_PLUS, BY_REORDERING, BY_SAVEIT, BY_SUM_OUT, BY_UNIFORM, BY_UPDATABLE, BY_V_ELIM, howCreatedVal, savingForTracing, thesize, variables

Constructor Summary

FactorExpand(Factor f1, Variable[] vars)
constructs a factor with the given variables.

Method Summary

EltsIterator

iterator() Returns an iterator over the values of the factor.

Methods inherited from class ve.Factor

allOnes, contains, display, getName, getSavingForTracing, getVariables, howCreated, isRedundant, isRedundant, print, print, printVariables, setSavingForTracing, size, toString

Methods inherited from class java.lang.Object

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

Field Detail

fact

private Factor fact

the factor to be expanded.

valsExpand

private int[] valsExpand

the values associated with the variables to be expanded. We don't keep track of the variables, just the number of variables in the domains.

valsBetween

private int[] valsBetween

the values associated with the variables between those to be expanded. valsBetween[i] is the values between variables given by valsExpand[i-1] and valsExpand[i]

numExpandBlocks

private int numExpandBlocks

the number of blocks of variables to be exanded.

Constructor Detail

FactorExpand

public FactorExpand(Factor f1,
                    Variable[] vars)

constructs a factor with the given variables.

Parameters:

f1 - the factor to be expanded

vars - the list of variables for the resulting factor

Method Detail

iterator

public EltsIterator iterator()

Returns an iterator over the values of the factor. This code is based on the Iterator code in java.util.AbstractList.

Overrides:

iterator in class Factor