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Effective XML keyword search with relevance oriented ranking

conference contribution
posted on 2023-05-23, 09:00 authored by Bao, Z, Ling, TW, B Chen, Lu, J
Inspired by the great success of information retrieval (IR) style keyword search on the web, keyword search on XML has emerged recently. The difference between text database and XML database results in three new challenges: (1) Identify the user search intention, i.e. identify the XML node types that user wants to search for and search via. (2) Resolve keyword ambiguity problems: a keyword can appear as both a tag name and a text value of some node; a keyword can appear as the text values of different XML node types and carry different meanings. (3) As the search results are sub-trees of the XML document, new scoring function is needed to estimate its relevance to a given query. However, existing methods cannot resolve these challenges, thus return low result quality in term of query relevance.
   In this paper, we propose an IR-style approach which basically utilizes the statistics of underlying XML data to address these challenges. We first propose specific guidelines that a search engine should meet in both search intention identification and relevance oriented ranking for search results. Then based on these guidelines, we design novel formulae to identify the search for nodes and search via nodes of a query, and present a novel XML TF*IDF ranking strategy to rank the individual matches of all possible search intentions. Lastly, the proposed techniques are implemented in an XML keyword search engine called XReal, and extensive experiments show the effectiveness of our approach.

History

Publication title

Proceedings of the 25th IEEE International Conference on Data Engineering

Pagination

517-528

ISBN

978-076953545-6

Department/School

School of Information and Communication Technology

Publisher

IEEE

Place of publication

United States of America

Event title

25th IEEE International Conference on Data Engineering

Event Venue

Shanghai, China

Date of Event (Start Date)

2009-03-29

Date of Event (End Date)

2009-04-02

Rights statement

Copyright 2009 IEEE

Repository Status

  • Restricted

Socio-economic Objectives

Information systems, technologies and services not elsewhere classified

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