ITM Web Conf.
Volume 12, 2017The 4th Annual International Conference on Information Technology and Applications (ITA 2017)
|Number of page(s)||7|
|Section||Session 4: Information Theory and Information Systems|
|Published online||05 September 2017|
Dependent Space and Attribute Reduction on Fuzzy Information System
College of Management Science, Chengdu university of technology, Chengdu, Sichuan, 610059, P. R. China ; College of Mathematics and Software Science, Sichuan Normal University, Chengdu, Sichuan, 610066, P. R. China
From equivalence relation RBδ on discourse domain U, we can derive equivalence relation Rδ on the attribute set A. From equivalence relation Rδ on discourse domain A, we can derive a congruence relation on the attribute power set P(A) and establish an object dependent space. And then,we discuss the reduction method of fuzzy information system on object dependent space. At last ,the example in this paper demonstrates the feasibility and effectiveness of the reduction method based on the congruence relation Tδ providing an insight into the link between equivalence relation and congruence relation of dependent spaces in the rough set. In this way, the paper can provide powerful theoritical support to the combined using of reduction method, so it is of certain practical value.
© The Authors, published by EDP Sciences, 2017
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