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Incomplete information system and rough set theory : Models and attribute reductions : 模型与属性约简 | 不完备信息系统与粗糙集理论 : 模型与属性约简.pdf

本书主要介绍粗糙集理论及其在不完备信息系统中的拓展。粗糙集理论是用于处理不精确问题的数学理论,是经典集合论的重要发展。由于粗糙集理论建立在等价关系的基础上,因而不能用来处理具有未知属性值的不完备信息系统,因而如何在不完备信息系统中扩展粗糙集的相关概念对于粗糙集的发展具有极其重要的

Practice 2  (1) In order to communicate thoughts and feelings, there must be a conventional system of signs or symbols which mean the same to the sender and the receiver. The means of sending communications are too numerous and varied for systematic class

Practice 2  (1) In order to communicate thoughts and feelings, there must be a conventional system of signs or symbols which mean the same to the sender and the receiver. The means of sending communic

Passage 3Questions 11 to 15 are based on the following passage:  Chokwe Selassie is on a mission to help drivers avoid potholes(路面坑洼). The Eight-grader was inspired to kick off his mission on a recent morning, when his mother was driving him to school. Th

Passage 3Questions 11 to 15 are based on the following passage:  Chokwe Selassie is on a mission to help drivers avoid potholes(路面坑洼). The Eight-grader was inspired to kick off his mission on a recent