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The accompanying files for my Teaching Your Machine To Find Fraudsters talk. clickgen2.php - generates click data to fraud2.csv paygen.php - generated payment data to paydata.csv and paytest.csv fraudclicks.csv - the data from the talk, with a fraud introduced at day 201 average.php - perform click detection based on the moving average + stddev sickavail.php - perform click detection based on the sickness availability model fraudknn.php - K Nearest Neighbour based learner for small built in fraud set testknn.php - Nearest neighbour search, using Xapian paydata.csv - 10000 transactions, mix of fraud/not fraud for training paytest.csv - 1000 of the same data, generated separately for testing learn.php - SVM learner and self evaluation on paydata data test.php - SVM test on paytest data learn.php and test.php require the SVM extension, available at pear.phpir.com fraudknn.php and testknn.php require the Xapian extension and libraries, generally available through package management (sometimes as xapian-bindings)
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Code from my talk on finding fraud
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