A mixed graph <i>G_{<img src="theta.gif">}</i> contains both undirected edges and directed arcs. A <i>k</i>-coloring of <i>G<sub><img src="theta.g...

The <i>p</i>-maxisum dispersion problem consists of locating <i>p</i> facilities at vertices of a network in order to maximize the sum of the distances betw...

Splitting a tree is defined as removing all edges of a chain and disconnecting one from the other edges incident with that chain. Splitting a forest is simu...

Cluster Analysis is at the crossroad of many disciplines, and has numerous and diverse methods and applications. Mathematical Programming (together with gra...

Global optimization methods aim at finding the global optimum of a nonlinear and nonconvex function subject to nonlinear and nonconvex constraints. The main...

An overview is given, with new results, of mathematical models and algorithms for probabilistic logic, probabilistic entailment and various extensions. Anal...

Given a set of logical sentences together with probabilities that these sentences are true, the probabilistic satisfiability (PSAT) problem consists, in it...

A count of Kekulé structures for all 1812 distinct fullerene isomers of C₆₀ shows that 20 isomers surpass the count of 12500 for icosahedral C<su...

We give a new formulation to the multiple-depot vehicle scheduling problem as a set partitioning problem with side constraints, whose continuous relaxation ...

In this paper we develop a stochastic, dynamic network equilibrium model of airline passenger transportation. The model explicitly incorporates the behavior...

CREW-OPT is a new software module in the HASTUS family of scheduling software. CREW-OPT produces optimal or near-optimal crew schedules for small problems (...

Le problème classique de dimensionnement d'un réseau de télécommunications se formule en général comme suit: étant donné un réseau, une matrice de trafic et...

The problem we consider is that of preparing a minimum cost transportation plan by simultaneously solving the following two sub-problems: first the assignm...

We present an algorithm that solves the problem of finding the vehicle schedule which minimizes total inconveniences for travel along a fixed path, where se...

Le problème classique d'optimisation de la capacité des réseaux de télécommunications s'énonce comme suit: pour un réseau dont la structure, la demande et l...

The problem is to elaborate a minimum cost transportation plan by simultaneously solving the following two sub-problems: the assignment of available units at...

We present an algorithm that solve the problem of finding the best vehicle time schedule (minimizing total inconveniences) for a fixed path, knowing that vis...

The urban transit crew scheduling problem arises in mass transit corporations who have to create minimal cost bus driver schedule respecting both the collect...

This paper presents mathematical formulations for some vehicle routing and scheduling problems with time window constraints and the optimal solution approach...