edu.cuny.cat.market.pricing
Class UniformPricingPolicy

java.lang.Object
  edu.cuny.cat.market.AuctioneerPolicy
      edu.cuny.cat.market.pricing.PricingPolicy
          edu.cuny.cat.market.pricing.KPricingPolicy
              edu.cuny.cat.market.pricing.UniformPricingPolicy

All Implemented Interfaces:

AuctionEventListener, edu.cuny.config.param.Parameterizable, edu.cuny.obj.Resetable, java.io.Serializable

public class UniformPricingPolicy
extends KPricingPolicy
implements java.io.Serializable

A pricing policy in which we set the transaction price in the interval between the ask quote and the bid quote as determined by the parameter k. The pricing policy is uniform in the sense that individual bid and ask prices are ignored, thus all agents performing transactions in the clearing operation will pay the same price.

An exception is that if the transaction price determined in this way falls out of the price interval of the matching ask and bid, the nearest boundary of the interval will be used as the transaction price. This may happen when, for example, LazyMaxVolumeShoutEngine is used to match shouts.

Version:

$Revision: 1.10 $

Author:

Steve Phelps

See Also:

Serialized Form

Field Summary

Fields inherited from class edu.cuny.cat.market.pricing.KPricingPolicy

DEFAULT_K, k, P_DEF_BASE, P_K

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

auctioneer

Constructor Summary

UniformPricingPolicy()

UniformPricingPolicy(double k)

Method Summary

double	determineClearingPrice(Shout bid, Shout ask, MarketQuote clearingQuote)
protected double	price(double quote, Shout shout) adjusts the price of market quote based on the given shout when the market quote does not have a valid value.

Methods inherited from class edu.cuny.cat.market.pricing.KPricingPolicy

getK, kInterval, setK, setup, toString

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

eventOccurred, getAuctioneer, initialize, reset, setAuctioneer

Methods inherited from class java.lang.Object

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

Constructor Detail

UniformPricingPolicy

public UniformPricingPolicy()

UniformPricingPolicy

public UniformPricingPolicy(double k)

Method Detail

price

protected double price(double quote,
                       Shout shout)

adjusts the price of market quote based on the given shout when the market quote does not have a valid value. This is possible when certain quoting policies, say SingleSidedQuotingPolicy, are used and the market quote is an infinite value.

Parameters:

quote -

shout -

Returns:

the value of quote if it is not NaN or an infinite value, or the price of the shout otherwise.

determineClearingPrice

public double determineClearingPrice(Shout bid,
                                     Shout ask,
                                     MarketQuote clearingQuote)

Specified by:

determineClearingPrice in class PricingPolicy