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《Geo-information Science》 2005-03
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Word Expanding Method for Chinese Word Segmentation Applied in GIS

WU Jing,CAI Di,WANG Zheng Laboratory of Geographic Information Science, Ministry of Education of China, East China Normal University, Shanghai 200062, China; Institute of Policy and Management, CAS, Beijing100080, China  
In this paper, we present the method called Word Expanding Method for analyzing and handling the Chinese natural language queries which are derived from the user interface of GIS. The realization of this method will help the nonprofessionals to use the GIS more conveniently and efficiently. Here, we adopt the idea of Maximum Matching Method known as longer word preferred. The process of Word Expanding Method includes two steps: filtrating and matching. The filtrating step filtrates the whole Limited Chinese Words Library by using the first character of the querying sentence, so as to reduce the scope which the matching step should match to. The Word Expanding Method is approved to be a rather efficient method for Chinese word segmentation. And finally, we applied this method in GIS by programming.
【Fund】: 国家863计划资助(2002AA134020)
【CateGory Index】: P208
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