CAJ | 학술논문

经典 Pawlak 粗糙集理论中的核心概念上、下近似集是通过集合相交非空和包含来定义的．由于缺乏对错误的容忍能力，其实际应用受到了限制．20世纪90年代初，Yao 等人结合贝叶斯决策理论提出了决策粗糙集模型．近年来，该模型逐渐得到重视，并在不确定性信息处理方面得到了广泛应用．该文首先就为什么要提出决策粗糙集模型、该模型具有什么特点以及该模型中需要解决的几个问题进行了详细讨论．然后，总结了国内外关于决策粗糙集模型的研究现状和进展，详细分析了存在的挑战性问题，并深入探讨了未来的研究方向．
경전 Pawlak 조조집이론중적핵심개념상、하근사집시통과집합상교비공화포함래정의적．유우결핍대착오적용인능력，기실제응용수도료한제．20세기90년대초，Yao 등인결합패협사결책이론제출료결책조조집모형．근년래，해모형축점득도중시，병재불학정성신식처리방면득도료엄범응용．해문수선취위십요요제출결책조조집모형、해모형구유십요특점이급해모형중수요해결적궤개문제진행료상세토론．연후，총결료국내외관우결책조조집모형적연구현상화진전，상세분석료존재적도전성문제，병심입탐토료미래적연구방향．
As the central concepts in rough set theory,the classical Pawlak lower and upper approximations are defined based on qualitative set-inclusion and non-empty overlapping relations,respectively.Consequently,the theory suffers from an intolerance of errors,which greatly restricts its real-world applications.To overcome this limitation,Yao and colleagues proposed a decision-theoretic rough sets (DTRS )model in early 1990s ’by introducing the Bayesian decision theory into rough sets.In recent years,the model has attracted much attention and has been applied in uncertain information processing.This paper aims at (1)presenting a survey of the motivations for introducing the DTRS model,the main features of the model,and the problems to be studied in the model,(2 )reviewing the fundamental results,state-of-art research,and challenges,and (3)pointing out future perspectives and potential research topics.