The production-routing problem can be seen as a combination of two well known combinatorial optimization problems: the lotsizing and the vehicle routing prob...

La plupart des compagnies distribuant de l’huile de chauffage résolvent des problèmes de tournées de véhicules presque quotidiennement. Ces problèmes peuven...

The <i>positive edge</i> is a new pricing rule for the primal simplex: it identifies, with a probability error less than or equal to 2^-30 in sing...

In the rail industry, profit maximization relies heavily on the integration of logistics activities with an improved management of revenues. The operational ...

In this paper, we empirically compare open-loop and closed-loop investment strategies in production capacities in the three-player Finnish electricity indust...

It is seldom the case that one has the opportunity to compare investments as projected by a long-term multi-period model to what is eventually realized in pr...

We revisit the question of why some participants in online auctions place their bids right before the time of closing. Using e-Bay data for two product cate...

This paper deals with an application of dynamic games for the design of efficient climate policies involving both adaptation and mitigation elements. More pr...

Paleoclimate evidence and climate models indicate that certain elements of the climate system may exhibit thresholds, with small changes in greenhouse gas em...

Normalized cut is one of the most popular graph clustering criteria. The main approaches proposed for its resolution are spectral clustering methods (e.g. [1...

The paper proposes a framework for sensitivity analyses of blackbox constrained optimization problems for which Lagrange multipliers are not available. Two s...

In this paper, we generalize the Asymmetric Representatives Formulation, which was first introduced by Campêlo et al. (2008) for the Node Coloring Problem. ...

We propose a new approach to construct adaptive multiscale orthonormal (AMO) bases of R^<i>N</i> that provide highly sparse signal representations....

A mixed interior/exterior-point method for nonlinear programming is described, that handles constraints by way of an <i>l</i>₁-penalty function. A...

The paper answers the three distinct questions of maximizing the perimeter, diameter and area of equilateral unit-width convex polygons. The solution to each...

NOMAD is software that implements the MADS algorithm (Mesh Adaptive Direct Search) for black-box optimization under general nonlinear constraints. Black-box ...

Traditionally, IP Network planning and design is mostly based on average delay or loss constraints which can often be easily calculated. Jitter, on the othe...

This paper develops a dynamic model to determine a firm's optimal risk management strategy when it faces uncertainty about its future profitability and inves...

An automatic method for constructing linear relaxations of constrained global optimization problems is proposed. Such a construction is based on affine and i...

The integrated crew scheduling (ICS) problem consists of determining, for a set of available crew members, least-cost schedules that cover all flights and re...