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Title:Light-weight Domain-based Form Assistant: Querying Databases on the Web
Author(s):Zhang, Zhen; He, Bin; Chang, Kevin Chen-Chuan
Abstract:The Web has been rapidly ``deepened" by myriad searchable databases online, where data are hidden behind query forms. Helping users query alternative ``deep Web" sources in the same domain (\eg, Books, Airfares) is an important task with broad applications. As a core component of those applications, dynamic query translation (\ie, translating a user's query across dynamically selected sources) has not been extensively explored. While existing works focus on isolated subproblems (\eg, schema matching, query rewriting) to study, we target at building a complete query translator and thus face new challenges: 1) To complete the translator, we need to solve the \emph{predicate mapping} problem (\ie, map a source predicate to target predicates), which is largely unexplored by existing works; 2) To satisfy our application requirements, we need to design a customizable system architecture to assemble various components addressing respective subproblems (\ie, schema matching, predicate mapping, query rewriting). Tackling these challenges, we develop a \emph{light-weight domain-based form assistant}, which can generally handle alternative sources in the same domain and is easily customizable to new domains. Our experiment shows the effectiveness of our form assistant in translating queries for real Web sources.
Issue Date:2004-11
Genre:Technical Report
Other Identifier(s):UIUCDCS-R-2004-2499
Rights Information:You are granted permission for the non-commercial reproduction, distribution, display, and performance of this technical report in any format, BUT this permission is only for a period of 45 (forty-five) days from the most recent time that you verified that this technical report is still available from the University of Illinois at Urbana-Champaign Computer Science Department under terms that include this permission. All other rights are reserved by the author(s).
Date Available in IDEALS:2009-04-17

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