基于主成分分析的特色数据库的评价

Evaluation of Characteristic Database Based on Principal Components Analysis

以郑州轻工业学院自建16个特色数据库为对象,基于主成分分析原理,采用SPSS软件分析这16个特色数据库评价指标的合理性和科学性。结果表明,评价指标的选择必须考虑指标间是否具有相关性,同时特色库建设的内容考虑的应该是数据库的覆盖的范围和数量、查准率、查全率、更新频率和使用频率、界面友好和方便程度。最重要的是数据库的建设必须以使用者为导向。

The rationality and scientificalness of evaluation indictors system were investigated through SPSS software based on principal components analysis and 16 characteristic databases of ZZULI. The results showed that selection of evaluation indictors must consider the relativity between indictors. Meanwhile, the area covered and quantity of characteristic da- tabase, as well as precision ratio, recall ratio, update frequency and operating frequency, the friendly and convenient interface also should be considered during the construction of characteristic database and the most important thing is user-oriented.