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dc.contributor.authorTrevathan, J
dc.contributor.authorRead, W
dc.date.accessioned2017-05-03T16:09:18Z
dc.date.available2017-05-03T16:09:18Z
dc.date.issued2007
dc.date.modified2013-12-12T03:28:57Z
dc.identifier.issn1796-203X
dc.identifier.urihttp://hdl.handle.net/10072/54902
dc.description.abstractShill bidding is where spurious bids are introduced into an auction to drive up the final price for the seller, thereby defrauding legitimate bidders. Trevathan and Read presented an algorithm to detect the presence of shill bidding in online auctions. The algorithm observes bidding patterns over a series of auctions, and gives each bidder a shill score to indicate the likelihood that they are engaging in shill behaviour. While the algorithm is able to accurately identify those with suspicious behaviour, it is designed for the instance where there is only one shill bidder. However, there are situations where there may be two or more shill bidders working in collusion with each other. Colluding shill bidders are able to engage in more sophisticated strategies that are harder to detect. This paper proposes a method for detecting colluding shill bidders, which is referred to as the collusion score. The collusion score, either detects a colluding group, or forces the colluders to act individually like a single shill, in which case they are detected by the shill score algorithm. The collusion score has been tested on simulated auction data and is able to successfully identify colluding shill bidders.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent1043142 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherAcademy Publisher
dc.publisher.placeFinland
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom63
dc.relation.ispartofpageto75
dc.relation.ispartofissue10
dc.relation.ispartofjournalJournal of Computers
dc.relation.ispartofvolume2
dc.rights.retentionY
dc.subject.fieldofresearchInformation and computing sciences
dc.subject.fieldofresearchInformation systems not elsewhere classified
dc.subject.fieldofresearchcode46
dc.subject.fieldofresearchcode460999
dc.titleInvestigating Shill Bidding Behaviours Involving Colluding Bidders
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2007 Academy Publisher. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.date.issued2007
gro.hasfulltextFull Text
gro.griffith.authorTrevathan, Jarrod


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