00313nas a2200109   4500000000100000000000100001008004100002260004200043100002200085700002000107245007600127       2013                            d  c23-26 Sept. 2013aTimisoara, Romania 1 aVinicius Almendra1 aDenis Enachescu00aUsing Self-Organizing Maps for Fraud Prediction at Online Auction Sites