This paper brings forward an information retrieval method based on path learning that is used in a price information extracting system.
本文提出了一种基于路径学习的信息自动抽取方法，并采用该方法编制了一个商品价格信息自动抽取系统。
Based on rough sets and evidence combining theory, a general method of extracting the extension decision rules of probability information system is given.
使用粗糙集和证据合成理论中的方法，给出了获取概率信息系统的扩展决策规则集的一般方法。
This article is an exploration to biomedical question-answering system. This system is composed of three primary aspects: problem processing, information retrieving and answer extracting.
本文是对生物医学问答系统的一个探索，系统包括三个主要组成部分：问题处理、信息检索和答案抽取。
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