1) topdown approach
自上而下近似
2) lower and upper approximation
上下近似
1.
The theory of rough sets deals with the approximation of an arbitrary subset of a universe by two definable or observable subsets called lower and upper approximation.
粗糙集理论是近年来发展起来的一种有效的处理不精确、不确定信息的理论,在机器学习及数据挖掘等领域获得了成功的应用,该文用矩阵的方法来研究粗糙集,即从一个二元关系矩阵出发,给出粗糙集上下近似的矩阵描述,实际上是用矩阵的方法重新定义上下近似,矩阵的方法不仅提供了上下近似的简单的计算方法,也提供了一种新的推理的方法,我们还把矩阵方法用于信息系统的约简。
3) Upper(lower) approximation
上(下)近似
4) Upper and Lower Approximation
上下近似
1.
Upper and Lower Approximation of an Interval-valued Fuzzy Set Based on Weak Inclusion
基于弱包含的区间值模糊集的上下近似
2.
Combination with upper and lower approximation of Rough sets theory and MST algorithm presents Rough MST algorithm,and constructs certain MST and uncertain MST.
结合粗糙集理论中的上下近似理论与图论中的最小生成树算法提出了粗糙最小生成树算法,并构造了确定性最小生成树和可能性最小生树。
5) top-down
[英]['tɔpdaun] [美]['tɑp'daʊn]
自上而下
1.
Top-down Parametric Modeling Assemblies Design Based on UGNX4;
基于UGNX4的自上而下参数化建模装配设计
2.
In order to get deeper understanding to it and help remove the obstacles in listening comprehension procedures,this paper mainly discusses the harmonious application of bottom-up theory and top-down theory in listening comprehension and its effect in improving the students listening level.
为了加深对听力理解的认识和扫除英语听力理解中的障碍,本文主要讨论了自下而上和自上而下理论在英语听力理解中的和谐应用,以及此理论在提高英语听力水平中的作用。
3.
This paper selects some residential areas construction of specific historic period and dynasty,inspects the transformation of ancient Chinese living pattern,and evaluates the evolutional reasons of residential rules and patterns from two aspects of "bottom-up" and "top-down".
点选了一些特定的历史时期和朝代都城的居住区建设,考察了中国古代居住态的变迁,并试图从“自下而上”与“自上而下”两方面评价居住的规则和形态的演化原因。
6) bottom-up
[英]['bɔtəmʌp] [美]['bɑtəmʌp]
自下而上
1.
Adaptive assembly modeling in bottom-up product design;
自下而上产品设计中的自适应装配建模
2.
In order to get deeper understanding to it and help remove the obstacles in listening comprehension procedures,this paper mainly discusses the harmonious application of bottom-up theory and top-down theory in listening comprehension and its effect in improving the students listening level.
为了加深对听力理解的认识和扫除英语听力理解中的障碍,本文主要讨论了自下而上和自上而下理论在英语听力理解中的和谐应用,以及此理论在提高英语听力水平中的作用。
3.
This paper selects some residential areas construction of specific historic period and dynasty,inspects the transformation of ancient Chinese living pattern,and evaluates the evolutional reasons of residential rules and patterns from two aspects of "bottom-up" and "top-down".
点选了一些特定的历史时期和朝代都城的居住区建设,考察了中国古代居住态的变迁,并试图从“自下而上”与“自上而下”两方面评价居住的规则和形态的演化原因。
补充资料：八方上下
【八方上下】
（术语）谓四方，四维，上下之十方也。
（术语）谓四方，四维，上下之十方也。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条