jadex.planlib
Class ExponentialPriceCalculator

java.lang.Object
  jadex.planlib.ExponentialPriceCalculator

All Implemented Interfaces:

IOfferGenerator

public class ExponentialPriceCalculator
extends Object
implements IOfferGenerator

A sample implementation of the IPriceCalculator. Calculates the price for the next round of an english auction.

Constructor Summary

ExponentialPriceCalculator(double startprice, double limitprice, double base)
Create a new exponential price calculator.

ExponentialPriceCalculator(double startprice, double limitprice, double base, double variation, double minstepwidth)
Create a new exponential price calculator.

Method Summary

Comparable	getCurrentOffer() Get the price for the current round of this auction.
Comparable	getLimitOffer() Get the min price.
int	getRound() Get the round.
Comparable	getStartOffer() Get the start price.
static void	main(String[] args) Main for testing.
void	setNextRound() Increase the round.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExponentialPriceCalculator

public ExponentialPriceCalculator(double startprice,
                                  double limitprice,
                                  double base)

Create a new exponential price calculator.

Parameters:

startprice - The start price.

limitprice - The limit price (min or max) for a auction.

base - The base for the exponential function.

ExponentialPriceCalculator

public ExponentialPriceCalculator(double startprice,
                                  double limitprice,
                                  double base,
                                  double variation,
                                  double minstepwidth)

Create a new exponential price calculator.

Parameters:

startprice - the start price

limitprice - the minimal price for a successful auction

base - The base for the exponential function.

variation - The variation in percentage (0->1) for the increment. The increment will be used to adapt the increment by multiplying it with (+/-) a random value that has maximal the variation percentage influence, e.g. setting 0.1 will cause the increment being maximally +/-10% changed.

minstepwidth - The minimum step width (a positive value that describes the minimum price change in each round).

Method Detail

getCurrentOffer

public Comparable getCurrentOffer()

Get the price for the current round of this auction.

Specified by:

getCurrentOffer in interface IOfferGenerator

Returns:

The price.

getLimitOffer

public Comparable getLimitOffer()

Get the min price.

Specified by:

getLimitOffer in interface IOfferGenerator

Returns:

The minprice.

getStartOffer

public Comparable getStartOffer()

Get the start price.

Specified by:

getStartOffer in interface IOfferGenerator

Returns:

The startprice

getRound

public int getRound()

Get the round.

Specified by:

getRound in interface IOfferGenerator

Returns:

The round.

setNextRound

public void setNextRound()

Increase the round.

Specified by:

setNextRound in interface IOfferGenerator

main

public static void main(String[] args)

Main for testing.