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在对Internet环境下数据库群检索系统进行检索的过程中,检索效率很大程度上取决于检索策略的质量。为提高检索策略的正确性,除了对检索需求进行主题分析之外,还必须理解和掌握检索策略设计过程中的根本原理和法则。系统地分析了数据库群检索系统、检索策略和检索需求三者间的内在逻辑关系,建立了检索策略抽象结构,在此基础上,进一步揭示了检索策略屏蔽原理并对这一原理的深刻内涵和实际应用法则进行了深入探讨。
In the process of retrieving the database group retrieval system under the Internet environment, the retrieval efficiency depends largely on the quality of the retrieval strategy. In order to improve the accuracy of the search strategy, in addition to the thematic analysis of the retrieval needs, we must also understand and master the basic principles and rules in the design of the retrieval strategy. This paper systematically analyzes the internal logical relation among the retrieval system of database, retrieval strategy and retrieval requirement, and establishes the abstract structure of retrieval strategy. Based on this, the principle of retrieval strategy is further revealed and profound connotation of this principle Practical application of the rules were discussed in depth.