[Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Paul Lewis

[eoas-seminar at lists.fsu.edu]

"A particle filtering approach to the multispecies coalescent"

Paul Lewis
Professor of Ecology and Evolutionary Biology,
University of Connecticut

Please feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic. All are welcome to attend.

NOTE: In-person attendance is requested in our 499 Dirac Science Library (DSL) Seminar Room. Zoom access is intended for external (non-departmental) participants only.

https://fsu.zoom.us/j/94273595552
Meeting # 942 7359 5552

🎦 Colloquium recordings will be made available here,
https://www.sc.fsu.edu/colloquium<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sc.fsu.edu%2Fcolloquium&data=05%7C02%7Csc-seminar-announce%40lists.fsu.edu%7Cf145e749884d4808aeaa08dd7546ab88%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638795668564024505%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=l10dl73eg7yaeaKDjgvUpuPPhzY7MnxgkZ%2BNB9clt7g%3D&reserved=0>


Wednesday, Apr 9, 2025, Schedule:

* 3:00 to 3:30PM Eastern Time (US and Canada)
☕ Nespresso & Teatime - 417 DSL Commons

* 3:30 to 4:30 PM Eastern Time (US and Canada)
🕟 Colloquium - 499 DSL Seminar Room


Abstract:
The multispecies coalescent (MSC) model applies coalescent theory to gene evolution within and among reproductively isolated populations ("species") to estimate a species tree in the face of potential gene tree conflict resulting from deep coalescence. We are exploring the use of particle filtering (PF) to sample from the MSC posterior distribution, providing a fully Bayesian and easily parallelized alternative to traditional Metropolis-Hastings MCMC approaches. The method we propose samples first from the joint posterior distribution of gene and species trees, then samples species trees conditional on gene trees sampled previously, employing PF for both. Analyses of simulated and empirical datasets yield results comparable to state-of-the-art Bayesian MCMC approaches but at a fraction of the computational cost.

Additional colloquium details can be found here,
https://www.sc.fsu.edu/news-and-events/colloquium/1868-colloquium-with-paul-lewis-2025-04-09<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sc.fsu.edu%2Fnews-and-events%2Fcolloquium%2F1868-colloquium-with-paul-lewis-2025-04-09&data=05%7C02%7Csc-seminar-announce%40lists.fsu.edu%7Cf145e749884d4808aeaa08dd7546ab88%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638795668564050387%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=n6mURDJr57o%2BqVANdGQQuf2Q6grcWTVQWf088QzSfPU%3D&reserved=0>
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