News 2024

Uutiset 2024

A Public Lecture by Prof. Giovanni Pantuso

Date of Publication: 28.08.2024
In this talk, I present an exact solution method for two-stage stochastic programs under decision-dependent uncertainty. In such problems, first-stage decisions determine the probability distribution of second-stage uncertain parameters.  Particularly, we focus on a broad class of problems where the number of potential probability distributions is finite but exponentially large. In these problems, the recourse function is non-convex and discontinuous even for problems with continuous second-stage. The proposed method extends the well-known L-Shaped method and is applicable also to two-stage stochastic programs with integer variables at both stages. We show that the algorithm converges finitely and propose a number additional improvements that facilitate convergence, such as valid inequalities. Results of numerical experiments on a facility location problems under endogenous uncertainty show promising scalability and efficiency also on very challenging problems.

Defence of doctoral thesis in the field of systems and operations research, MSc. Olli Herrala

Date of Publication: 28.08.2024
Olli Herrala will defend his doctoral thesis "Mixed-integer formulations for large-scale energy-environmental optimization" on 6 September 2024 at 12.15 in lecture hall H304.

The doctoral thesis is available electronically here