TY - JOUR ID - 71439 TI - A New Approach for Knowledge Based Systems Reduction using Rough Sets Theory (RESEARCH NOTE) JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Montazer, G.A. AD - Electerical Engineering, Tarbiat Modarres University Y1 - 2003 PY - 2003 VL - 16 IS - 2 SP - 157 EP - 162 KW - Information System KW - Database KW - Rough Sets Theory KW - reduction KW - Decision Making DO - N2 - Problem of knowledge analysis for decision support system is the most difficult task of information systems. This paper presents a new approach based on notions of mathematical theory of Rough Sets to solve this problem. Using these concepts a systematic approach has been developed to reduce the size of decision database and extract reduced rules set from vague and uncertain data. The method has been applied to an imprical medical database with large scale data size and the final reduced and core rules has been extracted using concepts of this theory. UR - https://www.ije.ir/article_71439.html L1 - https://www.ije.ir/article_71439_b8c820485ab0ab6da4271aae482bada5.pdf ER -