The volume contains 43 (out of 185) papers that were presented at the 15th International Conference on Multiple Criteria Decision Making held in Ankara, Turkey July 10-14, 2000. The conference was one of the regular conferences of the International Society on Multiple Criteria Decision Making, which are held at approximately two-year intervals. The Ankara conference had 195 participants from 38 countries. The volume covers all relevant aspects of the field and presents the latest research results on MCDM.