Searching for authors named "Philippe Fortemps" – sorted by Relevance.
9 documents found, showing 1 through 9.
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Jobshop Scheduling with Imprecise Durations: a Fuzzy Approach
- …Jobshop scheduling problems are NP \Gamma hard problems. The durations in the reality of manufacturing are often imprecise and the imprecision in data is very critical for the scheduling procedures. Therefore, the fuzzy approach, in the framework of the Dempster-Shafer theory, commands attention. Th…
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Introducing Flexibility in Scheduling: the Preference Approach
- …. Although tools and methods are nowadays available to schedule operations into a workshop, this task is still often completed by hand. Because of ready dates and due dates, the strict satisfaction of constraints may be impossible and exibilities have to be considered. We present in this paper a…
- Cited by 2 (0 self) – Add To MetaCart
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Multi-Objective Fuzzy Linear Programming: the MOFAC method
- …this paper the dicult problem of a meaningful and consistent treatment of fuzzy numbers in a mathematical model with imprecision. According to (Fortemps and Roubens 1996), the area compensation method for comparing two fuzzy numbers is recalled, in Section 1.1, to build a ranking relation between al…
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On the Disjunctive Graph for Project Scheduling
- …. An extension of the Disjunctive Model, efficiently representing Jobshop Scheduling (JS) problem, to more general Resource-Constrained Project Scheduling (RCPS) problem is proposed. The extension considers different groups of resources used by activities in different amounts limited to a constant v…
- Cited by 2 (1 self) – Add To MetaCart
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Computing Improved Optimal Solutions to Max-Min Flexible Constraint Satisfaction Problems
- …: The formal framework for decision making in a fuzzy environment is based on a general maxmin, bottleneck-like optimization problem, proposed by Zadeh. It is also the basis for extending the constraint satisfaction paradigm of Artificial Intelligence to accommodating flexible or prioritized constra…
- Cited by 5 (2 self) – Add To MetaCart
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Leximin Optimality and Fuzzy Set-Theoretic Operations
- …The leximin ranking of vectors of values taken from a totally ordered set is sometimes encountered in elds like operational research, social choice or numerical analysis, but has seldom been studied in connexion with fuzzy optimization. In this paper we prove that a leximin optimal solution to a vec…
- Cited by 3 (1 self) – Add To MetaCart
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A Graded Quadrivalent Logic for Ordinal
- …We extend a quadrivalent logic of Belnap to graded truth values in order to handle graded relevance of positive and negative arguments provided in preferential information concerning ranking of a finite set of alternatives. This logic is used to design the preference modelling and exploitation phase…
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Fuzzy Sets for Modelling and Handling Imprecision and Flexibility
- …this paper, we consider resources like tools, machines, manpower . . . , i.e. renewable resources. Therefore, the same amount of resources that comes into the floor should be recovered by the end of the process plan.…
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Ranking and Defuzzification Methods based on Area Compensation
- …: We present some interesting properties related to the area compensation procedure to compare fuzzy numbers. It has been proved that this method produces more than a fuzzy interval order: it induces a ranking of fuzzy numbers. Some further results are given about the transitivity property and about…
- Cited by 22 (2 self) – Add To MetaCart
Showing 1 through 9.
