Français Anglais
Accueil Annuaire Plan du site
Accueil > Evenements > Séminaires
Séminaire d'équipe(s) A&O
Continuous MCTS for hydroelectric scheduling
Adrien Couëtoux

16 July 2013, 14h30 - 16 July 2013, 15h30
Salle/Bat : 1/DIG-Moulon
Contact :

Activités de recherche :

Résumé :
Hydroelectric scheduling (HS) problems, so far, have mostly been solved by mathematical programming methods (linear programming, stochastic dual dynamic programming, etc), because it's the only known method that works well to solve sequential decision making with very large action space (~10000 variables and more).
However, these methods need to simplify the model in several ways, including: assuming the cost function is convex, and simplifying the underlying random processes (like assuming they are Markovian).
Both these assumptions are wrong in reality for hydroelectric systems.

We investigate an alternative way to solve these problems, Monte Carlo Tree Search. It became famous for improving significantly the level of computers for the game of Go. We extended its reach to continuous domains.
However, MCTS suffers from some limitations to work on HS problems: it does not do well on very large action spaces, and it struggles with long time horizon.
This is why we worked on two fronts: first, we developped a framework to mix MCTS with existing suboptimal policies (like Linear Programming), in a way that can get the best out of both worlds.
Second, we are working on modifications of the traditional bandit inspired formula that dictates how to spend computing power in the tree of MCTS. Alternative methods to direct the computing effort show promising results on simple problems.

Pour en savoir plus :
Séminaires
Quantum at LRI
Calcul quantique
Tuesday 04 February 2020 - 09h00
Salle : 465 - PCRI-N
.............................................

Progressive Data Analysis: a new computation parad
Gestion de données du Web
Friday 24 January 2020 - 14h00
Salle : 435 - PCRI-N
Jean-Daniel Fekete .............................................

Jeux d’instructions : des extensions SIMD aux exte
Architectures parallèles
Tuesday 21 January 2020 - 10h30
Salle : 465 - PCRI-N
Daniel Etiemble .............................................

Forum dev-LRI
Tuesday 14 January 2020 - 14h00
Salle : 445 - PCRI-N
Erik Bray .............................................

La transformation du travail, un analyseur des tra
Wednesday 18 December 2019 - 10h00
Salle : 475 - PCRI-N
Raquel Becerril-Ortega .............................................