ORFEL: Online-Recommendation Fraud Excluder

Download

Please, download the java source with sample data at ORFEL (zip file ~300KB).

We also provide our synthetic graph generator (zip file ~25KB) and our lockstepper (zip file ~25KB) - used to add artificial attacks to the datasets.

Instructions

• To run ORFEL you will need the GraphChi library.

• We also use the HPPC library.

• The program receives 2 parameters: the input graph (as an edge list text file) and the number of shards to be created - please refer to the GraphChi documentation.

• In the zip file, we include a synthetic graph with its groundtruth for initial tests.

• We also include both the weighted and the unweighted versions of the algorithm, so make sure you are using the right one, with the appropriate sample file.

• Finally, in some of our experiments we used Amazon.FineFoods and Amazon.Movies datasets from SNAP webpage.

• If you have questions or suggestions you can send us an email: ggimenes@icmc.usp.br