All the roughest set in the hills collects here for that day, as Your Eminence knows, and it is more than probable that they may attempt to break open the fortress gates and take him out.
大人知道，那天山上最粗暴的人都聚集在这里，他们很可能会试图打开要塞大门把他带出去。
| 单词 | Rough sets |
| 释义 |
Rough sets
原声例句
牛虻（原版） All the roughest set in the hills collects here for that day, as Your Eminence knows, and it is more than probable that they may attempt to break open the fortress gates and take him out. 大人知道，那天山上最粗暴的人都聚集在这里，他们很可能会试图打开要塞大门把他带出去。
中文百科
粗集合 Rough set（重定向自Rough sets）
粗糙集（rough set），又称粗集合。在粗糙集理论中，明确集（crisp set）是指传统的集合，而粗糙集则用于对明确集进行形式上的逼近，即给出该明确集的上逼近集和下逼近集。此理论最初由波兰数学家Zdzisław I. Pawlak所描述，也被视为标准的粗糙集理论。在这标准理论中，上逼近集和下逼近集都是明确集，而在其它一些版本的粗糙集理论中则是模糊集。
英语百科
Rough set 粗集合（重定向自Rough sets）
In computer science, a rough set, first described by Polish computer scientist Zdzisław I. Pawlak, is a formal approximation of a crisp set (i.e., conventional set) in terms of a pair of sets which give the lower and the upper approximation of the original set. In the standard version of rough set theory (Pawlak 1991), the lower- and upper-approximation sets are crisp sets, but in other variations, the approximating sets may be fuzzy sets. |
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