Français Anglais
Accueil Annuaire Plan du site
Accueil > Evenements > Séminaires
Séminaire d'équipe(s) BioInfo
Counting, generating and sampling tree alignments
Julien Courtiel

14 January 2016, 11h00 - 14 January 2016, 12h00
Salle/Bat : 465/PCRI-N
Contact :

Activités de recherche : Biologie structurale

Résumé :
Pairwise ordered tree alignment are combinatorial objects that appear in important applications, such as RNA secondary structure comparison. However, the usual representation of tree alignments is ambiguous, which is detrimental to any probabilistic analysis.

In this talk, we see how to remove this ambiguity. We give for that a context-free grammar that generates every tree alignment exactly once. Then two applications are presented. The first one is a precise asymptotic enumeration of tree alignments, obtained by mean of basic analytic combinatorics. The second application is an efficient dynamic programming algorithm for sampling alignments under the Gibbs-Boltzmann probability distribution.

Pour en savoir plus : https://bioinfo.lri.fr/seminars/2016-01-14-courtiel.html
Séminaires
A Family of Tractable Graph Distances
Gestion de données du Web
Wednesday 04 July 2018 - 10h30
Salle : 465 - PCRI-N
Stratis Ioannidis .............................................

Binary pattern of length greater than 14 are abeli
Combinatoire
Friday 29 June 2018 - 14h30
Salle : 445 - PCRI-N
Matthieu Rosenfeld .............................................

Distributionally Robust Optimization with Principa
Optimisation combinatoire et stochastique
Friday 29 June 2018 - 11h00
Salle : 455 - PCRI-N
Dr. Jianqiang Cheng .............................................

Caractérisation de réseaux égocentrés par l'énumér
Friday 15 June 2018 - 14h30
Salle : 455 - PCRI-N
Raphaël Charbey .............................................

DATA VERACITY ASSESSMENT: HOW A-PRIORI KNOWLEDGE E
Intégration de données et de connaissances
Friday 15 June 2018 - 14h00
Salle : 445 - PCRI-N
Valentina Beretta .............................................