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Contact: Byron Spice
bspice@cs.cmu.edu
412-268-9068
Carnegie Mellon University
Caption: In this graph of online auction transactions, the darkened oval represents a known perpetrator of fraud, while the other two ovals in the top row are suspected fraudsters. The bottom row of this graph, called a bipartite core, shows apparent accomplices who artificially boosted the fraudsters' reputation scores.
Credit: Carnegie Mellon University
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Related news release: Carnegie Mellon researchers uncover online auction fraud
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