Liam Revell
@phytools_liam
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Evolutionary biologist, R developer, & occasional heterodox. Tweets mostly about phylogenetics... but sometimes speech, the academy, politics, & COVID.
Providence, Rhode Island
Joined May 2013
A discrete character dependent Brownian motion with a trend model in #phytools (& it works pretty good):
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Much more about a discrete trait dependent multi-trend trended Brownian motion model in #phytools:
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A multi-σ2, multi-μ, discrete-state-dependent trended Brownian model using the discretized diffusion approximation in #phytools:
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Should've been clearer that this was (unfortunately) only open to #evol2025 in-person meeting attendees -- and the book has already been won!.
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Also posted to #evol2025 app social feed, but in case anyone's looking on here, I'd like to give away a copy of my book to a non-U.S./Canada grad student, since I know it can be harder to get outside N.A. Respond here or on the app want it! I'll pick the recipient at random. 🎲
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I'm organizing an #Evol2025 meet-up run tomorrow (Sunday) at 6:15am. All ability levels & we'll do an out-and-back -- so no chance of getting lost. Meeting outside the Classic Center. Please email me if you want more details, or just show up!
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RT @TransmitScience: New in #phytools! Semi-threshold trait evolution model using fitsemiThresh .Analyzes traits based on hidden continuous….
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Today on the #phytools blog: Why parameter estimates in fitPagel can hit upper bounds, even if they don't in fitMk for each trait modeled separately.
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Just boosting this & adding that the ticket is FREE for whoever gets it. 😅.
I mistakenly purchased an extra student ticket ("Meia-Entrada") for the Best of Blues & Rock festival in São Paulo, Sunday June 8th. If any Brazilian evolutionary biology student wants it, please email me by 12pm Wednesday! . I'll pick randomly from anyone who qualifies. 1/2
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PS. My email address is very easy to find online, so I'm not posting it. PPS. This is what happens when you don't speak Portuguese!. 2/2.
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I mistakenly purchased an extra student ticket ("Meia-Entrada") for the Best of Blues & Rock festival in São Paulo, Sunday June 8th. If any Brazilian evolutionary biology student wants it, please email me by 12pm Wednesday! . I'll pick randomly from anyone who qualifies. 1/2
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This seems like a good postdoc with @MartBulla & Prague would be cool. More info: RT & share.
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Amazing figure made with the help of #Rstats #phytools in "Adaptations to marine environments and the evolution of slow-paced life histories in endotherms" by Sol et al. in @NatureComms:
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#phytools in infectious disease biology: "South Asian origin and global transmission history of Mycobacterium tuberculosis lineage 4" by Jaemsai et al. ( #phylodynamics
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Another great figure created with the assistance of #Rstats #phytools, this one by @juanolvido89 et al. "Look past the cooperative eye hypothesis: reconsidering the evolution of human eye appearance." Check out the article here:
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Love this beautiful figure made with the help of #Rstats #phytools in "Nest location and architecture as primary drivers of variation in UV reflectance in avian eggs" by @MEmendiwelso, @cdanielcadena, & @dOcampo10. Check it out here:
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A follow-up from yesterday's post -- parameter estimation under bounded Brownian motion evolution with absorbing bounds:
Something a little bit new. A bounded continuous character evolution model with absorbing boundaries for #phytools:
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Something a little bit new. A bounded continuous character evolution model with absorbing boundaries for #phytools:
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Simulating Brownian motion evolution with absorbing boundary conditions using #phytools. (More on this soon. 😉)
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