Not exactly timely; the competition started in September 2009. There are well-known algorithms for mining association rules; see, e.g., <a href="http://www.eecs.umich.edu/~klefevre/eecs584/Papers/agrawal_1994.pdf" rel="nofollow">http://www.eecs.umich.edu/~klefevre/eecs584/Papers/agrawal_1...</a> .