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计算机工程 ›› 2008, Vol. 34 ›› Issue (18): 36-38. doi: 10.3969/j.issn.1000-3428.2008.18.013

• 软件技术与数据库 • 上一篇    下一篇

分布式数据库搜索引擎的索引建立和优化

蒋 维,郝文宁,杨晓恝,靳大尉   

  1. (解放军理工大学工程兵工程学院,南京 210007)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-20 发布日期:2008-09-20

Index Creation and Optimization of Distributed Database Search Engine

JIANG Wei, HAO Wen-ning, YANG Xiao-jia, JIN Da-wei   

  1. (Engineering Institute of Engineering Corps, PLA Univ. of Sci. & Tech., Nanjing 210007)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-20 Published:2008-09-20

摘要: 对于使用数据的用户来说,能找到准确的数据且没有遗漏是一件非常困难的事。为了较好地满足用户需求,该文提出了利用分布式数据库搜索引擎架构来实现智能化的搜索和定位。通过建立和优化索引,并使用适当的排序算法,搜索引擎能将最贴近用户需要的结果排在其他结果之前,从而提高搜索引擎的检索效率、查全率和查精率。实验表明,该引擎的查全率为90.02%,查精率为89.78%。

关键词: 分布式, 数据库搜索引擎, 索引建立, 索引优化

Abstract: It is very difficult for the users to find what they need fast and effectively. In order to satisfy the users’ requirement, this paper gives a system structure of the distributed database search engine, which implements the intellectualized search and orientation. The construction of the search engine focuses on the establishment and optimization of the index. By the creation and optimization of the index, and using a proper collate algorithm, the search engine can give the users what they need at first. Thus, it can improve the search efficiency, recall and precision ratio. The experiment shows that the recall ratio is 90.02% and the precision ratio is 89.78%.

Key words: distributed, database search engine, index creation, index optimization

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