Fineness and coarseness of an approximation space in the rough set theory(粗糙集理论中近似空间的精细及近似精度)
讨论了近似空间的精细与粗糙的概念及其两个等价描述,研究了给定集合的上下近似集在精细与粗糙近似空间中的性质,即随着近似空间的加细,给定集合X的最佳下近似单调上升、最佳上近似单调下降.还讨论了近似精度问题,指出Pawlak近似精度的一个不合理现象,并且新定义了一种近似精度....
Main Authors: | XIAJia-rong(夏佳荣), WANGAi-qin(王爱芹) |
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Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2007-05-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/zjup/1008-9497.2007.34.3.245-247 |
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