IndicatorUtilityFunction (Tweety (Dialogue Systems Library) 1.15 API)

java.lang.Object
- net.sf.tweety.agents.dialogues.structured.IndicatorUtilityFunction

All Implemented Interfaces:

UtilityFunction
```
public class IndicatorUtilityFunction
extends Object
implements UtilityFunction
```
This class represents an indicator utility function, i.e. a function that ranks a set of propositions to 1 if this function's focal element is part of the set, and 0 otherwise.

Author:

Matthias Thimm

Constructor Summary

Constructors
Constructor	Description
`IndicatorUtilityFunction(net.sf.tweety.logics.pl.syntax.Proposition focalElement)`	Creates a new indicator utility function for the given focal element.

Method Summary

Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`
`int`	`hashCode()`
`int`	`rank(Collection<? extends net.sf.tweety.logics.pl.syntax.Proposition> propositions)`	Rank the given collection of propositions.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - IndicatorUtilityFunction
```
public IndicatorUtilityFunction(net.sf.tweety.logics.pl.syntax.Proposition focalElement)
```
    Creates a new indicator utility function for the given focal element.
    
    Parameters:
    
    focalElement - a proposition.
- Method Detail
  - rank
```
public int rank(Collection<? extends net.sf.tweety.logics.pl.syntax.Proposition> propositions)
```
    Description copied from interface: UtilityFunction
    
    Rank the given collection of propositions. A set S is preferred to a set T if rank(S)>rank(T).
    
    Specified by:
    
    rank in interface UtilityFunction
    
    Parameters:
    
    propositions - a collection of propositions.
    
    Returns:
    
    the rank of the given collection.
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object