title: optimization of constrained frequent set queries with 2-variable constraints. authors: l lakshmanan , r ng , j han , a pang. venue: sigmod conference. year: 1999
title: optimization of constrained frequent set queries : 2-var constraints. authors: lvs lakshmanan , r ng , j han , a pang. venue: 3rd sigmodâ ?? 98 workshop on research issues in data mining. year: nan