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Conference Paper

Structural Feedback for Keyword-Based XML Retrieval


Schenkel,  Ralf
Databases and Information Systems, MPI for Informatics, Max Planck Society;


Theobald,  Martin
Databases and Information Systems, MPI for Informatics, Max Planck Society;

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Schenkel, R., & Theobald, M. (2006). Structural Feedback for Keyword-Based XML Retrieval. In Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006 (pp. 326-337). Berlin, Germany: Springer.

Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-2405-F
Keyword-based queries are an important means to retrieve information from XML collections with unknown or complex schemas. Relevance Feedback integrates relevance information provided by a user to enhance retrieval quality. For keyword-based XML queries, feedback engines usually generate an expanded keyword query from the content of elements marked as relevant or nonrelevant. This approach that is inspired by text-based IR completely ignores the semistructured nature of XML. This paper makes the important step from pure content-based to structural feedback. It presents a framework that expands a keyword query into a full-fledged content-and-structure query. Extensive experiments with the established INEX benchmark and our TopX search engine show the feasibility of our approach.