Journal of Systems Engineering and Electronics ›› 2008, Vol. 19 ›› Issue (3): 628-635.

• SYSTEMS ENGINEERING • Previous Articles    

Research on knowledge acquisition method about the IF/THEN rules based on rough set theory

Liu Daohua1,2, Yuan Sicong1, Zhang Xiaolong1 & Wang Fazhan1   

  1. 1. School of Mechanical & Electronic Engineering, Xi’an Univ. of Architecture & Technology, Xi’an 710055, P. R. China;
    2. Dept. of Computer Science, Xinyang Normal Univ., Xinyang 464000, P. R. China
  • Online:2008-06-23 Published:2010-01-03

Abstract:

The basic principles of IF/THEN rules in rough set theory are analyzed first, and then the automatic process of knowledge acquisition is given. The numerical data is qualitatively processed by the classification of membership functions and membership degrees to get the normative decision table. The regular method of relations and the reduction algorithm of attributes are studied. The reduced relations are presented by the multi-representvalue method and its algorithm is offered. The whole knowledge acquisition process has high degree of automation and the extracted knowledge is true and reliable.