Article ID: | iaor20071998 |
Country: | Singapore |
Volume: | 23 |
Issue: | 3 |
Start Page Number: | 329 |
End Page Number: | 346 |
Publication Date: | Sep 2006 |
Journal: | Asia-Pacific Journal of Operational Research |
Authors: | Li Han-Lin, Ma Li-Ching |
Keywords: | graphical methods |
Gower plots provide a powerful graphical tool to detect cardinal and ordinal inconsistencies in a pairwise preference matrix. However, there is no systematical way to help a decision maker to reduce these inconsistencies. This paper develops a model that can assist in making a consistent decision. Gower plots are used to detect major inconsistencies. A multi-objective program is then formulated to adjust both the cardinal inconsistencies and the preference changes subjected to the constraints of ordinal consistency.