Talks

Tuesday 31st of January :

• 12h : Thierry Huillet (Cergy)
Wright-Fisher diffusions with randomized fitness and alternative paths to neutrality ;
Links to articles given in references :
On the Karlin–Kimura approaches to the Wright–Fisher diffusion with fluctuating selection, T. Huillet, J. Stat. Mech., 2011.
On the extended Moran model and its relation to coalescents with multiple collisions, T. Huillet, M.Mölhe, Theoretical Population Biology, 2011.


• 13h: Lunch
  
  
• 14h30 : Loic Chaumont (Angers)
Codage des forêts de branchement multitype : application au calcul de la loi de l'effectif total ;


• 15h30 : Quansheng Liu (LMAM)
Branching random walk with a random environment in time ;


• 16h30 : Break



• 17h : Vlada Limic (LATP)
Some old and new martingales linked to exchangeable coalescents.
See references in the abstract section.

Wednesday 1st of February

• 9h : Julien Audiffren (LATP)
Lien entre modèle de Fleming-Viot et du look-down ;


• 10h : Michael Kopp (LATP-EBM)


Adaptive walks in changing environments ;


• 11h : Break



• 11h30 : Elisabeta Vergu (INRA)
Modélisation des dynamiques multi-souches dans la transmission en métapopulation de la grippe ;


• 12h30 : Lunch



• 14h30 : Clément Fabre (CMAP)
Evolution d'une métapopulation en environnement hétérogène ;


• 15h15 : Mamadou Ba (LATP)
Effet de la compétition sur longueur et hauteur de la forêt d'arbres généalogiques ;


• 16h : Nicolas Lartillot (Montréal)
Bayesian models for macroevolutionary studies.

Abstracts

• Vlada Limic (LATP)
Some old and new martingales linked to exchangeable coalescents.

An open problem (Conjecture 4 from [A]) was presented, along with several semi-martingales that either already proved or might prove useful in the study of exchangeable coalescent processes. Until now most of the results obtained by martingale methods concern the coalescents that come down from infinity (see e.g. [B]) . It would be interesting to show that the asymptotic for L_n, the total length of the genealogical tree, holds in complete generality. The speaker would appreciate your feedback if you make progress on this problem.

[A] J. Berestycki, N. Berestycki and V. Limic (2012) Asymptotic sampling formulae for Lambda-coalescents. Preprint
[B] J. Berestycki, N. Berestycki and V. Limic (2010) The Lambda-coalescent speed of coming down from infinity. Ann. Probab. Vol. 38, No. 1, 207--233, 2010.

Practical informations

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Last modified: 17 Oct. 2011