- A New Type of Clustering Problem with Two Objectives
- A New Type of Clustering Problem with Two Objectives
- ㆍ 저자명
- 이재영,Lee. Jae-Yeong
- ㆍ 간행물명
- 대한산업공학회지
- ㆍ 권/호정보
- 1998년|24권 1호|pp.145-156 (12 pages)
- ㆍ 발행정보
- 대한산업공학회
- ㆍ 파일정보
- 정기간행물|ENG| PDF텍스트
- ㆍ 주제분야
- 기타
In a classical clustering problem, grouping is done on the basis of similarities or distances (dissimilarities) among the elements. Therefore, the objective is to minimize the variance within each group while maximizing the between-group variance among all groups. In this paper, however, a new class of clustering problem is introduced. We call this a laydown grouping problem (LGP). In LGP, the objective is to minimize both the within-group and between-group variances. Furthermore, the problem is expanded to a multi-dimensional case where the two-way minimization process must be considered for each dimension simultaneously for all measurement characteristics. At first, the problem is assessed by analyzing its variance structures and their complexities by conjecturing that LGP is NP-complete. Then, the simulated annealing (SA) algorithm is applied and the results are compared against that from others.