At present search engines on the net are designed mainly based on index search technology.The search range of this technology could be very wide,but it is difficult for keywords to express rich concepts and the abundant semantics in customers' information
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李清茂 田昌鹏.基于自然语言查询的搜索引擎模型[J].重庆工商大学学报(自然科学版),2005,(5): LI Qing-Mao~,TIAN Chang-Peng~. Study on a search engine model based on natural language[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2005,(5):