User´s query requirement modeling language for Deep Web

Deep Web information integration has become more and more important due to its rich and high quality data. How to select the most appropriate web database relevant to user´s requirement is challenging. However, the existing researches only focus on the data source selection method and ignore the expression of user´s query requirement. This paper presents a user query requirements modeling language, which can be used for cross-domain integration for the Deep Web. Simplicity, domain-independent and universality make it a powerful tool for user modeling. Based on this tool, it is possible to build cross-domain Deep Web On-Demand integrated system.