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

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

Type Parameters:

T -

All Implemented Interfaces:

ComparatorVariable<T>

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

Defines a minimum cardinality, of the greatest lowest bound, variable comparator. The variable with the minimum cardinality for the greatest lower bound has the priority.

Version:

3.1

Author:

Krzysztof Kuchcinski and Robert Åkemalm

Constructor Summary

MinGlbCard()
It constructs a minimum cardinality, of the greatest lowest bound, variable comparator.

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

MinGlbCard

public MinGlbCard()

It constructs a minimum cardinality, of the greatest lowest bound, variable comparator.

Method Detail

compare

public int compare(float left,
                   T var)

Compares the cardinality of the variables glb 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 glbs.

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 glb.

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.