JaCoP.set.search
Class MaxLubCard<T extends SetVar>

java.lang.Object
  JaCoP.set.search.MaxLubCard<T>

Type Parameters:

T -

All Implemented Interfaces:

ComparatorVariable<T>

public class MaxLubCard<T extends SetVar>
extends java.lang.Object
implements ComparatorVariable<T>

Defines a maximum cardinality, of the least upper bound, variable comparator. The variable with the maximum cardinality for the least upper bound has the priority.

Version:

3.1

Author:

Krzysztof Kuchcinski and Robert Åkemalm

Constructor Summary

MaxLubCard()
It constructs a maximum cardinality, of the least upper bound, variable comparator.

Method Summary

int	compare(float left, T var) Compares the cardinality of the variables lub to the float value.
int	compare(T leftVar, T rightVar) Compares the cardinality of the variables lubs.
float	metric(T var) Returns the cardinality of the lub.

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxLubCard

public MaxLubCard()

It constructs a maximum cardinality, of the least upper bound, variable comparator.

Method Detail

compare

public int compare(float left,
                   T var)

Compares the cardinality of the variables lub to the float value.

Specified by:

compare in interface ComparatorVariable<T extends SetVar>

Parameters:

left - the baseline for comparison.

var - variable which is compared to baseline.

Returns:

1 if metric is larger than variable, 0 if equal, -1 if baseline is smaller.

compare

public int compare(T leftVar,
                   T rightVar)

Compares the cardinality of the variables lubs.

Specified by:

compare in interface ComparatorVariable<T extends SetVar>

Parameters:

leftVar - left variable

rightVar - right variable

Returns:

1 if metric for left variable is greater, 0 is they are equal, -1 if smaller.

metric

public float metric(T var)

Returns the cardinality of the lub.

Specified by:

metric in interface ComparatorVariable<T extends SetVar>

Parameters:

var - variable for which metric is computed.

Returns:

the metric of the variable according to the comparator.