Title :
Variable precision rough set model in incomplete information system
Author :
Wang, Ji-Yi ; Zhou, Guang-Cheng
Author_Institution :
Inf. Sci. & Eng. Coll., Zhejiang Normal Univ., China
Abstract :
This paper discusses the concept unit decision rate for attribute values in incomplete information systems, and extends rough set models based on tolerance relations and non-symmetric similarity relations. The variable precision rough set model is established and its property is discussed in incomplete information systems.
Keywords :
decision theory; entity-relationship modelling; information systems; rough set theory; attribute values; concept unit decision rate; incomplete information system; nonsymmetric similarity relations; tolerance relations; variable precision rough set model; Cybernetics; Data mining; Databases; Educational institutions; Fuzzy set theory; Information science; Information systems; Machine learning; Rough sets; Set theory; Incomplete information systems; non-symmetric similarity relations; tolerance relations; variable precision rough sets;
Conference_Titel :
Machine Learning and Cybernetics, 2005. Proceedings of 2005 International Conference on
Conference_Location :
Guangzhou, China
Print_ISBN :
0-7803-9091-1
DOI :
10.1109/ICMLC.2005.1527252
