English

应用科学学报 ›› 1992, Vol. 10 ›› Issue (3): 247-251.

• 论文 • 上一篇    下一篇

数据库系统中的参数获取

吴信东, 王浩   

  1. 合肥工业大学
  • 收稿日期:1990-12-11 修回日期:1991-08-25 出版日期:1992-09-30 发布日期:1992-09-30
  • 基金资助:
    国家自然科学基金资助项目

COEFICIENTS ACQUISITION IN DATABASE SYSTEM

WU XINDONG, WANG HAO   

  1. Hefei University of Technology
  • Received:1990-12-11 Revised:1991-08-25 Online:1992-09-30 Published:1992-09-30

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摘要： 介绍作者在KESHELL Ⅱ[1]系统中设计的一个参数处理模块CP.该模块以回归、拟合等手段实现从目标数据库中获取数值型属性之间的函数表达式,它也允许DBA以显式函数关系来描述数值型"虚"属性.

关键词: 回归, 参数获取, 关系数据库, 微分拟合

Abstract: This paper introduces the coefioients acquisition and processing module (CP) in the KESHELL Ⅱ system. The regression, fitting and other mathematical methods are adopted to acquire the function expression of numeric attributes from the object database. The DBA can describe the virtual numeric attributes in explicit functions by the OP module.

Key words: ooefloients acquisition, relational database, regression, fitting