Automatic extraction of input form information in complex search site

Increasing number of complex search sites is available on the Web. The query for such sites is not just a keyword but a complex query. We have been investigating the trend of the complex search sites, and reported the importance of inte- grating such complex search service. In this paper, we explain the general composition of the input fields in the input screen of the search sites, and clarify items to be extracted to use the sites. Moreover, we explain the outline of our extraction tool of