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97 Papers in 2003

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In this paper, we are concerned with the statistical methodology of epidemiological surveillance; that is, the ongoing procedure of analyzing and interpreti...

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Assouad has shown that a real-valued distance <i>d</i> = (<i>d</i><sub><i>ij</i></sub>) <sub>1 &le; <i>i</i> &lt; <i>j</i> &le; <i>n</i></sub> is isome...

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We present an exact algorithm for solving the channel assignment problem in cellular telephony networks. This problem consists of assigning sets of channels...

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Given the sets of flights and aircraft of an airline carrier, the fleet assignment problem consists of assigning the most profitable aircraft type to each f...

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The increase of bandwidth demand for new Internet applications suggests mapping directly IP over the WDM layer. Since reliability is such a critical issue i...

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The variable neighborhood search metaheuristic is applied to the primal simple plant location problem and to a reduced dual obtained by exploiting the compl...

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Column generation is one of the most successful approaches for solving large scale linear programming problems. However, degeneracy difficulties and long-ta...

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Column generation has become a powerful tool in solving large scale integer programs. It is well known that most of the often reported compatibility issues ...

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This paper surveys important parameters for the design of large scale networks topology such as the YottaWeb topology [1, 2, 3]. First, a wide range of perf...

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Chemical graphs, as other ones, are <i>regular</i> if all their vertices have the same degree. Otherwise, they are <i>irregular</i> and it is of interest to...

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This paper proposes a generalization of the proximal point algorithm using both penalty and trust region concepts. Finite convergence is established while as...

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The problem of determining a shortest loop incident to each cell of a block layout is considered. A compact formulation is developed for this problem and a ...

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The problem retained for the ROADEF'2001 international challenge was a frequency assignment problem with polarization constraints (FAPP). This NP-hard probl...

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Let <i>G</i>=(<i>V,E</i>) be a graph with vertex set <i>V</i> and edge set <i>E</i>. The <i>k</i>-colouring problem is to assign a colour (a number chosen ...

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This paper deals with the topological design of a yotta-bit-per-second (1 <i>yotta</i> = 10<sup>24</sup>) multidimensional network. The YottaWeb is a recent...

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In this note we explore the fact that a stationary point of some nonlinear non-convex optimization problem is not always a local optimum, and that such a st...

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Column generation is often used to solve problems involving set partitioning constraints, such as vehicle routing and crew scheduling problems. When these co...

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The integrated aircraft routing and crew scheduling problem consists in determining a minimum-cost set of aircraft routes and crew pairings such that each fl...

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Genetic algorithm has proven itself to be a fairly good optimization algorithm. Despite its many successful applications, there is a lack of theoretical ...

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This paper presents two solution approaches for taking into account the displacement mode (forward or in reverse) of vehicles during the solution of the shor...

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The fleet management problem discussed in this paper consists in assigning the best routes to a set of vehicles in an underground mine haulage network. The h...

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The berth allocation problem is to allocate space along the quayside to incoming ship at a container terminal in order to minimize some objective function....

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This paper addresses the problem of determining the optimal daily operating policy of a small reservoir subject to yearly probabilistic constraints on floods...

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Let <i>G</i> be a simple graph on <i>n</i> vertices with the eigenvalues (of an adjacency matrix) &lambda;<sub>1</sub> &ge; &lambda;<sub>2</sub> &ge; ... &g...

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The berth allocation problem is to allocate berths (i.e., sections of the quayside) to ships arriving in a container port in order to minimize the sum of the...

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In this paper, we adapt the Wilcoxon signed-rank test to the case of cluster correlated data. A simple modification of the estimator of the asymptotic vari...

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This paper reviews state-of-the-art models and approaches for solving a wide variety of public transit problems encountered at the strategic, tactical, and...

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The paper discusses the coupling of non-linear non-convex damage costs due to climate change with a cost-efficiency analysis based on a technical-economic li...

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In this paper, we present an optimization model based on cost minimization for traffic engineering of multirate and ATM networks with switched virtual circ...

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The Golomb Ruler problem consists in finding $n$ integers such that all possible differences are distinct and such that the largest difference is minimum. W...

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A Golomb ruler with <i>M</i> marks can be defined as a set {<i>a<sub>i</sub></i>} of integers so that all differences &delta;<sub><i>ij</i></sub> = <i>a<sub>...

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The first part of this paper presents a model of a subway network to evaluate a cost function that includes an operational cost and social costs measured in...

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In this paper we propose a mathematical model for the dimensioning of a 3G multimedia network and design a Tabu Search heuristic to solve it. The model is a...

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We propose a numerical approach to compute stationary Markov perfect Nash equilibrium advertising strategies of Lanchester model. The algorithm can be implem...

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Bimatrix and polymatrix games are expressed as parametric linear 0-1 programs. This leads to an algorithm for complete enumeration of their extreme equilibri...

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This paper deals with time-consistency and agreeability, two dynamic individual rationality concepts, in special linear-quadratic differential games. Condi...

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This paper considers the stability and stabilizability problems for the class of linear switching singular (LSS) systems. The stabilizing class of controlle...

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This paper deals with the uncertain class of continuous-time linear systems with Markovian jumping parameters. A design method for a non fragile robust con...

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This paper deals with the uncertain class of continuous-time linear systems with Markovian jumping parameters and multiplicative Brownian disturbance. A de...

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The paper addresses the problem of determining a retailer's optimal price promotions of two brands in a product category. A dynamic model is constructed, tak...

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In the present work Sacher's simple decomposition, originally developed for quadratic programming problems, is incorporated into a sequential quadratic pro...

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Ce document présente une revue de littérature sur la logistique inverse. Dans la littérature, plusieurs termes sont utilisés comme des synonymes, par exemple...

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In order to achieve a successful implementation of electronic commerce (EC), it is necessary to "re-engineer" the logistics activities of the enterprise. Thi...

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In this paper, we perform an empirical comparison of the classification error of several ensemble methods based on classification trees. This comparison is b...

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Goal Programming with fractional objectives can be reduced to mathematical programming with a linear objective under linear and quadratic constraints, thus...

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A sizeable proportion of manufacturing expenses can be attributed to facility layout and material handling. Facility layout decisions involve designing the ...

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An approach is suggested for testing whether the dependence structure of a random sample of multivariate data is appropriately modelled by a given family of ...

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The elementary shortest path problem with resource constraints (ESPPRC) is a widely used modeling tool in formulating vehicle routing and crew scheduling a...

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We consider the problem of testing the hypothesis that a multivariate location vector is in the positive orthant. A conditionally distribution-free sign te...

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This work is devoted to the study of linear continuous-time systems with Markovian jumping parameters and constrained control. The constraints used in this p...

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This paper answers a query of S. Vincze (Acta Univ. Szeged, Sect. Sci. Math. 12 A (1950) 136-142): find the convex octagon with unit-length sides and minim...

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This paper deals with the issue of shelf-space allocation and advertising decisions in marketing channels. We consider a network composed of a unique retaile...

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This chapter describes some of the most important models and algorithms for the classical vehicle routing problem and for several families of arc routing pr...

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In the <i>m</i>-Peripatetic Salesman Problem</i> (<i>m</i>-PSP) the aim is to determine <i>m</i> edge disjoint Hamiltonian cycles of minimum total cost on a ...

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Using an inifinite-horizon two-player differential game, we derive and compare Bertrand and Cournot equilibria, for a differentiated duopoly engaging in proc...

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We present stochastic approximation algorithms for computing the locally optimal policy of a constrained average cost finite state Markov Decision process. B...

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The autoregressive conditional multinomial model describes vector time series of conditional probabilities, where the variable of interest is multinomial. ...

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The Gibbs sampler is a very simple yet efficient method for the performance evaluation of product form loss networks. This paper introduces the setwise Gibb...

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Road network monitoring is an activity conducted daily by the Ministry of Transport of Quebec. The complete network must be monitored every two weeks. In th...

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The augmenting chain technique has been applied to solve the maximum stable set problem in the class of line graphs (which coincides with the maximum matchin...

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Given a finite set <i>E</i> and a family <i>F</i>={<i>E</i><sub>1</sub>,...,<i>E<sub>m</sub></i>} of subsets of <i>E</i> such that <i>F</i> covers <i>E</i>...

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Variable Neighborhood Search (VNS) is a recent metaheuristic, or framework for building heuristics, which exploits systematically the idea of neighborhood ch...

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We define two classes of lower bounds using either one or two simplices for the minimization of a concave function over a polytope. For each of them, a pro...

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This paper formulates and analyzes a pattern search method for general constrained optimization based on filter methods for step acceptance. Roughly, a f...

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Consider <i>N</i> entities to be classified (e.g., geographical areas), a matrix of dissimilarity between pairs of entities, a graph <i>H</i> with vertices a...

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This paper presents an exact solution approach for the problem of the simultaneous dispatching and conflict-free routing of automated guided vehicles. The ...

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The objective of this paper is to provide a game-theoretic interpretation of joint implementation in environmental projects. We consider a two-player game an...

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It is well known that the set of correlated equilibrium distributions of a noncooperative game is a convex polytope that includes all the Nash equilibrium ...

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Engle and Russell's autoregressive conditional duration (ACD) models have been widely used to model financial data that arrive at irregular intervals. In t...

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Pseudorandom sequences are one of commonly used test signals in system identification (Ljung, 1999; Soderstrom and Stoica, 1989). In this report, we first ...

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Cet article propose un modèle d’optimisation des stratégies de maintenance pour une meilleure intégration dans un plan de production préétabli. Le modèle est...

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This paper considers the locomotive assignment problem encountered during the planning of the operations of a freight railroad, which consists of providing s...

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Due to the increasing popularity of automated guided vehicles in modern industry and the valuable investment they require, their design and operational issue...

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This paper deals with the issue of deforestation, one of the main global environmental problems. We consider two players having different utilities for fores...

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This paper presents a new branching strategy that is applied on the cost of a subproblem during the solution of a large-scale linear program by a column gene...

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This paper explores new ways of constructing and implementing random number generators based on linear recurrences in a finite field with 2<sup><i>w</i></sup...

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Lattice rules are quasi-Monte Carlo methods for estimating large-dimensional integrals over the unit hypercube. In this paper, after briefly reviewing key i...

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We present a novel exact solution method for the centralized network design problem on directed graphs. The problem is modelled as the well-known graph theo...

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We examine whether cooperative advertising programs could constitute an effective tool to coordinate competitive marketing channels. While previous studies s...

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Convex feasibility problem in general is a problem of finding a point in a convex set contains a full dimensional ball and is contained in a compact convex ...

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We explore how a simple linear change of variable affects the inclusion functions obtained with Interval Analysis methods. Univariate and multivariate pol...

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This paper introduces a new integrated model for the combined day-off and shift scheduling problem (the tour scheduling problem). This model generalizes the...

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Corrected Miller-Tucker-Zemlin type subtour elimination constraints for the Capacitated Vehicle Routing Problem are presented.

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We develop stochastic models of time-dependent arrivals, with focus on the application to call centers. Our models reproduce essential features of call cen...

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We study the structure and point out weaknesses of recently-proposed random number generators based on special types of linear recurrences with small coeffic...

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Several methods for reducing the variance in the context of Monte Carlo simulation are based on correlation induction. This includes antithetic variates, L...

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This paper provides a framework for logistics decision-making by classifying logistics decisions and highlighting the relevant linkages among them. We focus ...

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We describe a tabu search algorithm for the vehicle routing problem with split deliveries. At each iteration, a neighbour solution is obtained by removing a ...

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We present an exact algorithm and three applications of nonconvex quadratically constrained quadratic programming. First, we consider the pooling problem fro...

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We consider the problem of maximizing the revenue raised from tolls set on the arcs of a transportation network, under the constraint that users are assign...

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The aim of this paper is to present efficient algorithms for the detection of multiple targets in noisy images of a torus. The algorithms are based on the ...

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In this article, we optimally solve an integrated production and material handling scheduling problem. Traditionally, scheduling problems consider machines a...

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This paper deals with the design of a new proposed optical core transport network called the YottaWeb, which offers information delivery at rates thousand of...

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We develop and analyze parallelization strategies for the Variable Neighborhood Search (VNS) meta-heuristic applied to the <i>p</i>-median problem. The stra...

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Hypermetric inequalities have many applications, most recently in the approximate solution of max-cut problems by linear and semidefinite programming. Howeve...

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Albertson (1997) defines the <i>imbalance</i> of an edge (<i>i,j</i>) in <i>E</i> of a graph <i>G</i> = (<i>V,E</i>) as | <i>d<sub>i</sub> - d<sub>j</sub></...

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Dans une rubrique de la Revue Française de Recherche Opérationnelle intitulée <i>Problèmes plaisans et délectables</i> en hommage à l'oeuvre du 17ème siècle ...

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