The article is analyzing and contrasting the Boolean Retrieval Model, pointing its advantages and disadvantages respectively.
本文对布尔逻辑检索模型进行分析、对比，指出各自的优缺点和存在的问题。
This article describes an extended Boolean retrieval model and its application in Chinese information retrieval systems. It also discusses retrieval improvement through relevance feedback.
本文介绍一种扩展的布尔检索模型及其在中文信息检索系统中的应用，并利用相关反馈技术改善检索系统性能。
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