Designing a Syntax-Based Retrieval System for Supporting Language Learning

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题名:	Designing a Syntax-Based Retrieval System for Supporting Language Learning
作者:	Tsao, Nai-Lung;Kuo, Chin-Hwa;Huang, Tsung-Fu;Wible, David
贡献者:	淡江大學資訊工程學系
关键词:	Regular expression;Syntax-based retrieval;Indexing technique;Query processing;Language learning
日期:	2007-07
上传时间:	2014-02-13
摘要:	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 [1] 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.
關聯:	2007年增進學習會議論文集=Proceedings of the Technology Enhanced Learning Conference 2007，8頁
显示于类别:	[資訊工程學系暨研究所] 會議論文

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