Alejandro Castellanos

Microbiologist | Physicist | Computacional Biologist @uniandes |
Colombian

[Juan Díaz-Colunga @jdiazc9.bsky.social @jdiazc9]

As of 2025 I am officially a junior PI at @ibfg_es. My lab will focus on building quantitative models of eco-evolutionary dynamics.

There is available funding for PhDs and postdocs — formal job announcements will come soon, but feel free to reach out in the meantime!

[Duke Center for Quantitative Biodesign @DukeBiodesign]

Join us tomorrow, 11/22 from 3-4PM in Wilkinson 021 as we hear from our next guest speaker, Dr. KC Huang, Professor of Bioengineering, Microbiology, and Immunology at Stanford University.

Dr. Huang will be discussing "Predicting the assembly of the gut microbiome."

[Ophelia @oventurelli2]

Here is our latest preprint that uncovers a novel mechanism of self-sustained oscillatory dynamics in a microbial community. Huge shoutout to the incredibly talented Tyler Ross for leading this work! https://t.co/V6FGVGc0xh

[Oded Rechavi @OdedRechavi]

It took more than a DECADE... but finally it’s published!!! It started as a CRAZY idea but after tons of hard work we built it: We hijacked the endogenous secretion systems of Toxoplasma gondii, a brain parasite, to deliver active proteins to neurons 👇
https://t.co/I2j2pAel69

[Milos Vukadinovic @milos_ai]

KAN: Kolmogorov–Arnold Networks is a really elegant paper. It's refreshing to see that things worked by design rather than by accident in ML. I made a small KAN experiment comparing it to MLP and spline fitting. (notebook in comments!)

[Mikhail Tikhonov @mikhtikh]

Very excited about this work. "Emergent simplicity" in microbial systems is an old hope, but the term means different things to different people. As a result, the field never quite agreed: is it real? If it’s real, is it surprising? @MoranJacobT https://t.co/pwYGEZNiJJ 1/3

[Alvaro Sanchez @asanchez_lab]

New review from our lab. We overview how the services provided by microbial communities and microbial populations may be optimized through rational environmental manipulations
https://t.co/K5Mn5zyEaa

[Marco Mauri @MarcoMauri81]

Check the speakers of the Population Dynamics Virtual Seminars 2024 on our new webpage

https://t.co/enxvmAedUD

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[PrakashLab @PrakashLab]

(1/n) Announcement: Just like every Jan, I will be teaching "Frugal Science" a global collaborative course focused on skills to tackle challenges in global health, scienceEd & climate action (new).
https://t.co/CnDDUUB8Le

[Uri Alon @UriAlonWeizmann]

Why are there flares and relapses in autoimmune disease? A mathematical model treats them as excitable dynamics and offers ways to reduce their frequency. #Autoimmunity #MultipleSclerosis #SystemsBiology #SystemsMedicine https://t.co/exAv3iFKLp

[Michael Pyrcz🌻 @GeostatsGuy]

Are you confused by ordinary least squares (OLS) vs. maximum likelihood estimation (LME) for model parameter fitting? #MachineLearning

To help my students, I just built out an interactive #Python dashboard with @matplotlib to visualize & compare OLS & MLE fitting of a Gaussian distribution to a dataset. I share it on #GitHub @ https://t.co/bNOykXKW88 ∀. #DataScience

[Juan Díaz-Colunga @jdiazc9.bsky.social @jdiazc9]

~A year ago I was lucky to spend a few months in the Ogbunu lab, and had the opportunity to learn about @big_data_kane's ideas on how the environment shapes molecular evolution in the context of pathogen resistance. This is the result of that experience:
https://t.co/y8aN5YKVMI

[Juan Díaz-Colunga @jdiazc9.bsky.social @jdiazc9]

I could not write a better summary than @big_data_kane's "Behind the paper" piece.

"This work is an example of the delightful nonlinear interactions that can occur between objects or entities... But what about when the agents interacting are scientists?"

https://t.co/SU2zpCW4SV

[Alvaro Sanchez @asanchez_lab]

A new paper from our lab is out after peer review. In collaboration with @big_data_kane, @jdiazc9 examined how global epistasis patterns change as the concentration of antimalarial drugs increases in the environment
https://t.co/iDYOM7Y1EZ

[Sara Mitri @saramitri]

Our department is recruiting a tenure-track Assistant Professor on microbial interactions linked to the @NCCRMicrobiomes ! Don't miss this opportunity to join a friendly, ambitious department in a city with hard-to-beat quality of life. Apply https://t.co/mKpsS2jURy by Jan 31!

[Michael Pyrcz🌻 @GeostatsGuy]

I teach Markov chain Monte Carlo #McMC, to build a strong foundation in my #MachineLearning course. Students often struggle with the concept.

Yesterday, I built out this interactive #Python @matplotlib #dashboard to demonstrate the #Gibbs sampler! Sample the joint from the conditionals!

Shared on #GitHub @ https://t.co/h04hfwmV53 ∀. #DataScience

[Marco Mauri @MarcoMauri81]

🚨Here the amazing list of the speakers of the

Population Dynamics Virtual Seminars 2024

https://t.co/nDxiA1WpzS

Final dates will come soon!

[Richard McElreath 🐈‍⬛ @rlmcelreath]

Yes I will offer my online science-focused Statistical Rethinking course again starting in January 2024. Registration going up at the end of this month. All the course materials are already online though, so why wait? Update your posterior today https://t.co/RFRUkjeT3Z

[Alvaro Sanchez @asanchez_lab]

With the recent moves, I'm getting tough to find. Our lab is now @ibfg_es in Salamanca. My new email & other contact details are in: https://t.co/Zs6Qhht7uv
Salamanca is beautiful (e.g.⬇️), livable, affordable, a great place to live & work 2hr from Madrid (& <1hr from Zamora!🙃)

[DiCYT @agenciaDiCYT]

El @ibfg_es incorpora un nuevo grupo, liderado por Álvaro Sánchez, que llega con una prestigiosa beca ERC 'Consolidator Grant', la primera de este tipo en Castilla y León. Su misión: desarrollar un sistema para estudiar las comunidades microbianas. 🧫🔬

🔗https://t.co/MEVAhOsiDS