Queueing problems in which a customer having received a unit of service, returns to the waiting line, under some decision rule, to receive another unit of service occur often in applications. Inspection procedures provide such a framework for units that must be reworked. A large class of such...

We introduce a new distance measure between two preorders that captures indifference, strict preference, weak preference and incomparability relations. This measure is the first to capture weak preference relations. We illustrate how this distance measure affords decision makers greater modeling...

The neo-classical economic theory of the consumer behavior defines a utility function in terms of a global number of characteristics a product process or the result of several purchase activities. Every consumer can be in the context of an inefficient consumption function if the choice of the...

The multi-criteria scheduling problem is one of the main research subjects in the field of multiple objectives programming. Several procedures have been developed to deal with this type of problem where some conflicting criteria have to be optimized simultaneously. The aim of our paper is to...

In this paper, we present a multicriterion approach of portfolio comparison and apply it to the selection of a global index fund portfolio using sixteen (16) national stock market indexes. The first algorithm used in the study (ELECTRE IS) solves for the subset of portfolios among which the...

The purpose of this paper is to identify the main factors professional fund managers in Québec take into consideration when assessing the riskiness of their investment in common stocks. L’objet de cet article est d’identifier les principaux facteurs que les gestionnaires professionnels de...