Abstract: To make use of deep web resource effectively, Deep Web data integration has become one of the hot-spot in current study. It is the basis and crucial to integrate deep web data that whether or not discovery deep web sites efficiently. In this case, we present a deep web interface discovery method, which includes to deterimine the query terms based on domain knowledge and to discovery deep web interfaces with heuristic rules. The experimental results show that the method can achieve high accuracy and recall with good feasibility and practicability.

Key words: domain knowledge, heuristic rules, deep web interface discovery