A Real-Time Detection Algorithm for Identifying Shill Bidders in Multiple Online Auctions

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dc.contributor.authorMajadi, Nazia
dc.contributor.authorTrevathan, Jarrod
dc.date.accessioned2017-12-28T01:56:48Z
dc.date.available2017-12-28T01:56:48Z
dc.date.issued2018-01-03
dc.description.abstractOnline auctions are highly susceptible to fraud. Shill bidding is where a seller introduces fake bids into an auction to drive up the final price. If the shill bidders are not detected in run-time, innocent bidders will have already been cheated by the time the auction ends. Therefore, it is necessary to detect shill bidders in real-time and take appropriate actions according to the fraud activities. This paper presents a real-time shill bidding detection algorithm to identify the presence of shill bidding in multiple online auctions. The algorithm provides each bidder a Live Shill Score (LSS) indicating the likelihood of their potential involvement in price inflating behavior. The LSS is calculated based on the bidding patterns over a live auction and past bidding history. We have tested our algorithm on data obtained from a series of realistic simulated auctions and also commercial online auctions. Experimental results show that the real-time detection algorithm is able to prune the search space required to detect which bidders are likely to be potential shill bidders.
dc.format.extent10 pages
dc.identifier.doi10.24251/HICSS.2018.482
dc.identifier.isbn978-0-9981331-1-9
dc.identifier.urihttp://hdl.handle.net/10125/50370
dc.language.isoeng
dc.relation.ispartofProceedings of the 51st Hawaii International Conference on System Sciences
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectSocial Shopping: The Good, the Bad and the Ugly
dc.subjectAuction fraud, Bidding behavior, Online auction, Live Shill Score, Shill bidding.
dc.titleA Real-Time Detection Algorithm for Identifying Shill Bidders in Multiple Online Auctions
dc.typeConference Paper
dc.type.dcmiText

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