基于最小可查询模式的Deep Web查询

his paper proposes the concept of minimum executable pattern(MEP), and then presents a MEP generation method and a MEP-based Deep Web adaptive query method. The query method extends query interface from single textbox to MEP set; it performs a query by choosing a MEP and a keyword vector of the MEP, and generates the next expected optimal query until stop condition is satisfied. The proposed method overcomes the problem of “Data Island” which results from deficiency of current methods. The experimental results on six real-world Deep Web sites show that our method outperforms existing methods in terms of query capability and applicability.