The deeper analysis of instruction requirements and good teaching design are the core work in developing the web-based courseware for Information Retrieval and Utilization.
深入的教学需求分析和良好的教学设计是《信息检索与利用》网络课件开发的核心内容。
The paper provides some improving measures, and gives a model of active pushing system based on vector space model, which can better improve the efficiency of Web information retrieval.
本文提出了一系列优化措施，设计了一个基于向量空间模型的主动推送系统原型，更好的满足网上信息检索效率的提高。
With the emergence of semantic web, semantic-based information retrieval has become an effective way to improve retrieval ability.
随着语义网的出现，基于语义也逐渐成为提高信息检索能力的一个有效途径。
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