WOW: the Hungarian Deep Web Searcher

This paper summarizes the goals and presents the results of our ongoing research and development project, called “In the Web of Words” (WOW), funded by the National R+D Program in Hungary. The project aims at creating a complex search interface that incorporates — beside the usual keyword-based search functionality—deep web search, Hungarian natural language (NL) question processing, image search support by visual thesaurus. In this paper we focus on system architecture and NL processing. One of the most crucial part of the system is the transformation of NL questions to adequate SQL queries that is in accordance with schema and attribute convention of contracted partner databases. This transformation is performed in three steps: NL question processing, context recognition, and SQL transformation.