Refining Keyword Queries for XML Retrieval by Combining Content and Structure

Authors:
Desislava Petkova;W. Bruce Croft;Yanlei Diao
Affiliations:
University of Massachusetts, Amherst, USA;University of Massachusetts, Amherst, USA;University of Massachusetts, Amherst, USA
Venue:
ECIR '09 Proceedings of the 31th European Conference on IR Research on Advances in Information Retrieval
Year:
2009

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Abstract

The structural heterogeneity and complexity of XML repositories makes query formulation challenging for users who have little knowledge of XML. To assist its users, an XML retrieval system can have a keyword-based interface, relegating the task of combining textual and structural clues to the retrieval algorithm. In this work, we propose an automatic query refinement method to transform a keyword query into structured XML queries that capture the original information need and conform to the underlying XML data. We formulate query generation as a search problem, and show the effectiveness of the method in generating accurate content-and-structure queries.