Date: September, 23rd, 11h30 Place: ULB Bruxelles Abstract: Multistage optimization problems under uncertainty have attracted interest from both the theoretical and the practical level and robust optimization stands among the most established methodologies for dealing with such problems. In robust optimization, we look for a solution that optimizes the objective…
Date: June, 21st, 11h30 Place: ULB Bruxelles Abstract: We consider the problem of a price-taker generating company that wants to select energy offering strategies for its generation units, to maximize the profit while considering the uncertainty of market price. First, we review central references available in literature about the use…
Date: June, 6th, 11h30 Place: ULB Bruxelles Abstract: In stochastic programming, it is usually assumed that the random data of the problem follows a known distribution P. When P is either continuous or finite with a large number of atoms, sampling methods can be used to approximate the true problem…
Date: May, 9th, 11h30 Place: Room P.OF2070 – ULB Bruxelles Abstract: We consider 0-1 optimization problems and their k-Delete recoverable robust (k-del RR) version. K-del RR is a two stage process to deal with cost-uncertainties. In the first stage, a solution of the underlying problem is fixed. In the second…
Date: May, 2nd, 11h30 Place: ULB Bruxelles Abstract: Many planning and location problems in forestry, mining, political districting, farmland consolidation, as well as in data mining, entail the selection of a subset, or a partition into subsets, that should satisfy some, often ill-specified, shape constraints. A typical such shape constraint…
Date: April, 29th, 11h30 Place: Room Rotule NO8 – ULB Bruxelles Abstract: We study combinatorial games arising from removing arcs from a network, to disconnect two distinguished nodes s and t. First we study a two-person zero-sum game where one player, the attacker, chooses every few minutes a set of…
Date: March, 3rd, 11h30 Place: Room Rotule NO8 – ULB Bruxelles Abstract: Soccer has become a major business involving many stakeholders, such as teams, police, fans, sponsors, and broadcasting companies. Huge amounts of money are being paid for the broadcasting rights, illustrating the economic value of soccer competitions. It also…
Date: March, 1st, 14h00 Place: Room B31 – INRIA Lille – Nord Europe Abstract: City Logistics has been introduced to study and understand the transport activities in urban areas. Optimisation of urban delivery planning needs to take into account the dynamics of the city in order to provide efficient services.…
Date: February, 23rd, 11h30 Place: Room Rotule NO8 – ULB Bruxelles Abstract: The subject of this talk is the study of the Lovasz-Schrijver PSD-operator N+ applied to the edge relaxation ESTAB(G) of the stable set polytope STAB(G) of a graph. We are particularly interested in the problem of characterizing the…