摘要
条件函数依赖(Conditional Functional Dependeny,CFD)是对函数依赖(Functional Depencency,FD)加入语义约束扩展而来,它在数据库一致性检测、数据清洗方面更优于后者。讨论了条件函数依赖的相关概念及其基本性质,讨论如何将它应用于数据清洗,并对已提出的基于CFD的数据清洗方案提出改进措施,并通过实验说明改进措施的可行性。
Conditional functional dependency （CFDs） is an extension of functional dependency （FDs） that adding semantic con- straints, which have better performance than FD in the database consistency detection and data cleaning. This article discusses the related concepts and basic properties of CFD, also discuss how to apply CFD to data cleaning, and propose some improvements for the proposed CFD based data cleaning program, illustrates the feasibility of the improvements through the experiment.
出处
《微型电脑应用》
2012年第9期23-26,30,共5页
Microcomputer Applications
关键词
数据挖掘
数据清洗
条件函数依赖
Data Mining
Data Cleaning
Conditional Functional Dependency
