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....
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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 |
| _version_ | 1797236279697473536 |
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| author | XIAJia-rong(夏佳荣) WANGAi-qin(王爱芹) |
| author_facet | XIAJia-rong(夏佳荣) WANGAi-qin(王爱芹) |
| author_sort | XIAJia-rong(夏佳荣) |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-24T17:01:20Z |
| format | Article |
| id | doaj.art-1ef82ca2d90e4320a1bca3a7f7bb77b1 |
| institution | Directory Open Access Journal |
| issn | 1008-9497 |
| language | zho |
| last_indexed | 2024-04-24T17:01:20Z |
| publishDate | 2007-05-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | Zhejiang Daxue xuebao. Lixue ban |
| spelling | doaj.art-1ef82ca2d90e4320a1bca3a7f7bb77b12024-03-29T01:58:24ZzhoZhejiang University PressZhejiang Daxue xuebao. Lixue ban1008-94972007-05-01343245247zjup/1008-9497.2007.34.3.245-247Fineness 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)XIAJia-rong(夏佳荣)0WANGAi-qin(王爱芹)1College of Science, Hangzhou Teachers' College, Hangzhou 310036, China(杭州师范学院理学院，浙江 杭州 310036)College of Science, Hangzhou Teachers' College, Hangzhou 310036, China(杭州师范学院理学院，浙江 杭州 310036)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.https://doi.org/zjup/1008-9497.2007.34.3.245-247粗糙集近似空间精细与粗糙上下近似近似精度 |
| spellingShingle | XIAJia-rong(夏佳荣) WANGAi-qin(王爱芹) 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) Zhejiang Daxue xuebao. Lixue ban 粗糙集 近似空间 精细与粗糙 上下近似 近似精度 |
| title | 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) |
| title_full | 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) |
| title_fullStr | 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) |
| title_full_unstemmed | 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) |
| title_short | 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) |
| title_sort | 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 |
| topic | 粗糙集 近似空间 精细与粗糙 上下近似 近似精度 |
| url | https://doi.org/zjup/1008-9497.2007.34.3.245-247 |
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