Thomas Legler Wolfgang Lehner Jan Schaffner Jens Krüger 0003 Robust Distributed Top-N Frequent Pattern Mining Using the SAP BW Accelerator. 1438-1449 2009 2 PVLDB 2 http://www.vldb.org/pvldb/2/vldb09-970.pdf db/journals/pvldb/pvldb2.html#LeglerLSK09