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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27310


    Title: Designing a Syntax-Based Retrieval System for Supporting Language Learning
    Authors: Tsao,NL;Kuo,CH;Wible,D;Hung,TF
    Contributors: 學習與教學研究所
    Date: 2009
    Issue Date: 2010-06-29 18:28:55 (UTC+8)
    Publisher: 中央大學
    Abstract: In this paper, we propose a syntax-based text retrieval system for on-line language learning and use a fast regular expression search engine as its main component. Regular expression searches provide more scalable querying and search results than keyword-based searches. However, without a well-designed index scheme, the execution time of regular expression search would be unacceptable to users. Our methods are based on Cho and Rajagopalan ( 2002) and we introduce some modifications, such as a presuf index constructing algorithm and a method for deciding minimum filter factor, to meet the requirements of our syntax-based text retrieval system. The experiment results show the index space size is small and the performance of syntax-based sample queries show significant improvements over benchmark results. A user-friendly query generator is designed to support users who have no background knowledge of regular expressions.
    Relation: EDUCATIONAL TECHNOLOGY & SOCIETY
    Appears in Collections:[學習與教學研究所 ] 期刊論文

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