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MANAGEMENT Online Modeling of Proactive Moderation System for Auction Fraud Detection

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Figure

Figure 1:Fraction of bags versus the number ofcases per bag (“bag size”) submitted by fraudulentand clean sellers respectively
Table 1: The rates of missed customer complaintsfor all the models given 100% workload rate.
Table 2: The rates of missed customer complaintsfor ON-SSVSBMIL (100% workload rate, batch sizeequal to 1/2 day and w = 0.9), with different valuesof δ.
Figure 4:For ON-SSVSBMIL with daily batches,0δ = 0.7 and ω = 0.9, the posterior probability of βjt = (j is the feature index) over time for a selected setof features.

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