Description: Information retrieval system to retrieve from the first hand to the present system has been developed using information technology to support the retrieval system, in the process and adapt to new information resources, information technology, the search environment, improve information retrieval system recall , precision and system response time is the constant theme in many text information is always the most effective control is a major goal of information processing. Vector space model around a text retrieval system is designed to introduce the vector space model is given on the basis of its information retrieval system based on the general framework and functions of each part, of the system, the key technologies involved. The feature vector space model using the expression, with the TF-IDF (Term-Frequency Inverse-Document-Frequency) for feature items empowerment, with the inverted file indexing, with the cosine angle between the distance measurement, with recall and precision evalu
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基于向量空间模型的文本检索系统的设计与实现.doc
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