edu.cuny.cat.market.charging
Class ChargeCuttingChargingPolicy

java.lang.Object
  edu.cuny.cat.market.AuctioneerPolicy
      edu.cuny.cat.market.charging.ChargingPolicy
          edu.cuny.cat.market.charging.ChargeCuttingChargingPolicy

All Implemented Interfaces:

AuctionEventListener, edu.cuny.config.param.Parameterizable, edu.cuny.obj.Resetable

public class ChargeCuttingChargingPolicy
extends ChargingPolicy

This charge-cutting charging policy set the charges by scaling down the lowest charges of markets imposed on the previous day. This is based on the observation that traders all prefer markets with lower charges.

Parameters

base.registration double	(charge on registration)
base.information double	(charge on information)
base.shout double	(charge on shout)
base.transaction double	(charge on transaction)
base.profit double [0,1]	(charge on profit)
base.scale double [0, 1] (0.8 by default)	(the scale of the lowest charges)

Default Base

charge_cutting_charging

Version:

$Revision: 1.9 $

Author:

Kai Cai

Field Summary

protected double[]	currentMinFees
static java.lang.String	P_DEF_BASE
static java.lang.String	P_SCALE
protected double	scale

Fields inherited from class edu.cuny.cat.market.charging.ChargingPolicy

FEE_TYPES, fees, FLAT, FRACTIONAL, INFORMATION_INDEX, MAXES, MINES, P_FEES, PROFIT_INDEX, REGISTRATION_INDEX, SHOUT_INDEX, TRANSACTION_INDEX

Fields inherited from class edu.cuny.cat.market.AuctioneerPolicy

auctioneer

Constructor Summary

ChargeCuttingChargingPolicy()

Method Summary

void	eventOccurred(AuctionEvent event)
void	reset() resets the state to be the same as the policy is created and initialized.
void	setup(edu.cuny.config.param.ParameterDatabase parameters, edu.cuny.config.param.Parameter base)
protected void	updateCurrentMinFees(FeesAnnouncedEvent event)
protected void	updateFees()

Methods inherited from class edu.cuny.cat.market.charging.ChargingPolicy

adjustFees, getFees, getInformationFee, getProfitFee, getRegistrationFee, getShoutFee, getTransactionFee, toString

Methods inherited from class edu.cuny.cat.market.AuctioneerPolicy

getAuctioneer, initialize, setAuctioneer

Methods inherited from class java.lang.Object

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

Field Detail

P_SCALE

public static final java.lang.String P_SCALE

See Also:

Constant Field Values

P_DEF_BASE

public static final java.lang.String P_DEF_BASE

See Also:

Constant Field Values

scale

protected double scale

currentMinFees

protected double[] currentMinFees

Constructor Detail

ChargeCuttingChargingPolicy

public ChargeCuttingChargingPolicy()

Method Detail

setup

public void setup(edu.cuny.config.param.ParameterDatabase parameters,
                  edu.cuny.config.param.Parameter base)

Specified by:

setup in interface edu.cuny.config.param.Parameterizable

Overrides:

setup in class AuctioneerPolicy

reset

public void reset()

Description copied from class: AuctioneerPolicy

resets the state to be the same as the policy is created and initialized.

Specified by:

reset in interface edu.cuny.obj.Resetable

Overrides:

reset in class AuctioneerPolicy

eventOccurred

public void eventOccurred(AuctionEvent event)

Specified by:

eventOccurred in interface AuctionEventListener

Overrides:

eventOccurred in class AuctioneerPolicy

updateCurrentMinFees

protected void updateCurrentMinFees(FeesAnnouncedEvent event)

updateFees

protected void updateFees()