/**
* D5 of Simple Shilling Agent by Trevathan; bid when bid volume is high
*
* @param mu
* @param auction
* @return true if should bid, else false
*/
private static boolean directive5(double mu, double theta, long currentTime, Auction auction) {
if (auction.getBidCount() == 0) return true;
double muTime =
proportionToTime(
1 - mu,
auction.getStartTime(),
currentTime); // D5, how far back to look when counting bids
double thetaTime =
proportionToTime(
theta, auction.getStartTime(), auction.getEndTime()); // D3, don't bid too close to end
int numberOfBids = numberOfBids(auction.getBidHistory(), (long) (muTime + 0.5));
// System.out.println("numberOfBids: " + numberOfBids);
if (numberOfBids > 1) {
return true;
} else if (numberOfBids == 1) {
// find the proportion of time time left available for the shill bidder to act
double normalisedTime = proportionRemaining(auction.getStartTime(), thetaTime, currentTime);
// System.out.println("normalisedTime: " + normalisedTime);
if (normalisedTime < 0.85) return true;
}
return false;
}
/** D3 of Simple Shilling Agent by Trevathan; don't bid too close to auction end */
private static boolean directive3(double theta, Auction auction, long time) {
double proportionRemaining =
proportionRemaining(auction.getStartTime(), auction.getEndTime(), time);
// System.out.println("proportionRemaining: " + proportionRemaining);
return proportionRemaining <= theta;
}