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퍼지 모수를 가지는 다목적 비선형 계획 문제의 대화형 퍼지 접근
이상완,남현우,윤연근 한국경영과학회 1997 韓國經營科學會誌 Vol.22 No.2
In general, two types of fuzziness of human judgements should be incorporated in multiobjective programming problems. One is the expert's ambiguous understanding of the nature of the parameters in the problem formulation process and the other is the fuzzy goals of the decision maker for each of the objective functions. In this paper, we present a new interactive fuzzy approach for obtaing the satisficing solution which efficiently reflect both types of fuzziness. An illustrative numerical example nonlinear programming problems with fuzzy parameters is demonstrated along with the corresponding computer outputs.
퍼지 환경하에서 유연생산시스템 일정계획의 Pairwise 해법에 관한 연구
이상완,신대혁,윤연근,박병주 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2
FMS(Flexible Manufacturing System) scheduling problem is a complex system and a NP-hard problem. Thus it is natural to look for heuristic method. Here, we consider the multi-part production scheduling problem in a FMS scheduring of altemative routings. The problem in more complex if the processing time is imprecision. It requires suitable method to deal with imprecision. Fuzzy set theory can be useful in modeling and solving scheduling problems with uncertain processing times. Lee-Ki fuzzy number comparison method will be used to compare processing times that evaluated under fuzziness. This study propose heuristic algorithm solving FMS scheduling problem under fuzzy environment. In this algorithm, the pairwise comparision method is used to find proper alternative routing. On the basis of the proposed method, and example in presented.
이상완,남현우,윤연근 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.1
We presents a new interactive fuzzy MCDM(multicriteria decision-making) method for solving aggregate production planning by assuming that the decision-maker has imprecise informations for each of alternatives. Li-Lee fuzzy numbers comparison method used to comparison alternatives that evaluated under fuzziness. The imprecise informations of the decision-maker are quantified by elicting corresponding membership functions through the interactive with the decision-maker out of five membership functions. On the basis of the proposed method, an illustrative numerical example is presented.
總括生産計劃에서 適定 퍼지수 比較法의 選擇에 관한 硏究
李相玩,朴永和,南賢祐,尹延根 동아대학교 공과대학 부설 한국자원개발연구소 1992 硏究報告 Vol.16 No.1
When using any of the aggregate production planning techniques mentioned in previous studies, it is generally assumed that the inputs of information are deterministic and easy to generate. However, the problem is more complex if the criteria and informations are expressed imprecisions. Therefore, it requires suitable method to deal with imprecisions. For select proper comparison method of fuzzy numbers in aggregate production planning with imprecise informations or criteria, this study use Dubois & Prade fuzzy number comparison method and Li-Lee fuzzy number comparison method among comparison methods fuzzy numbers. And then, proper method between two methods is selected. Also it is presented illustration.