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Gabriel Ramos-Fernandez

@grf.bsky.social
313 followers 216 following 64 posts

Research Institute on Applied Mathematics and Systems at the National Autonomous University of Mexico. Currently thinking about collective behavior and cognition. orcid.org/0000-0001-7175-3905

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Gabriel Ramos-Fernandez @grf.bsky.social · 22/04/2026
📢 ¡Convocatoria abierta! Únete al Departamento de Modelación Matemática de Sistemas Sociales como Investigador(a) Asociado(a) “C” 📌 Área: interacciones sociales y comportamiento colectivo 🗓️ Fecha límite: 1 de junio de 2026 🔗 Convocatoria completa en la página del IIMAS: bit.ly/48906hU
Anuncio de una plaza de investigación en el IIMAS - UNAM
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Gabriel Ramos-Fernandez @grf.bsky.social · 15/04/2026
Do you research social interactions and collective behavior? IIMAS-UNAM is hiring an Associate Researcher "C". PhD in psychology, anthropology or sociology + publications required. Women encouraged to apply. Maximum age 39 (♀️) and 37 (♂️). 📅 Deadline: June 1, 2026 📄 tinyurl.com/3dzc5nz4
tinyurl.com
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Gabriel Ramos-Fernandez @grf.bsky.social · 15/04/2026
¿Investigas interacciones sociales y comportamiento colectivo? IIMAS-UNAM convoca a Investigador(a) Asociado(a) "C". Se requiere doctorado en psicología, antropología o sociología + publicaciones internacionales. Edad máxima 39 años (♀️) y 37 años (♂️). 📅 Cierre: 1 jun 2026 📄 tinyurl.com/3dzc5nz4
tinyurl.com
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Gabriel Ramos-Fernandez @grf.bsky.social · 26/03/2026
A fascinating read on a despicable war crime and the ease with which the many layers of wrong *human* decisions can be hidden under an AI glitch AI got the blame for the Iran school bombing. The truth is far more worrying www.theguardian.com/news/2026/ma...
theguardian.com
AI got the blame for the Iran school bombing. The truth is far more worrying
LLMs-gone-rogue dominated coverage, but had nothing to do with the targeting. Instead, it was choices made by human beings, over many years, that gave us this atrocity
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Gabriel Ramos-Fernandez @grf.bsky.social · 29/01/2026
bsky.app/profile/grf....
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Gabriel Ramos-Fernandez @grf.bsky.social · 29/01/2026
A pleasure to chat with Matt Galloway in The Current, earlier this morniing, about our recently published paper on spider monkeys' collective intelligence www.cbc.ca/listen/live-...
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Reposted by Gabriel Ramos-Fernandez
Sandra E. Smith Aguilar @sandrateles-esmag.bsky.social · 28/01/2026
I'm really happy to share this paper showing a relationship between social integration and offspring survival in female spider monkeys. I was lucky to work on this with Cristina Jasso, @grf.bsky.social and a great group of collaborators. link.springer.com/article/10.1...
link.springer.com
Social integration in temporal multiplex association networks predicts offspring survival in female geoffroy’s spider monkeys (Ateles geoffroyi) - Behavioral Ecology and Sociobiology
Behavioral Ecology and Sociobiology - While sociality is considered an important factor influencing female reproductive success, it is unclear how temporal social dynamics relate to it. We address...
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Gabriel Ramos-Fernandez @grf.bsky.social · 27/01/2026
Spider monkeys use collective intelligence to find food: www.earth.com/news/spider-...
earth.com
Spider monkeys use collective intelligence to find food
Spider monkeys share food knowledge by changing groups, helping everyone find fruit faster in forests across seasons and landscapes.
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Reposted by Gabriel Ramos-Fernandez
Radical Anthropology @radicalanthro.c.im.ap.brid.gy · 26/01/2026
Impressive research and impressive spider monkeys! #primates #cognition #information #network #sharing www.theguardian.com/science/2026/ja…
theguardian.com
Spider monkeys found to share ‘insider knowledge’ to help locate best food
Researchers observed the primates switching social groups and passing information on where to find the ripest fruit
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Gabriel Ramos-Fernandez @grf.bsky.social · 26/01/2026
Spider monkeys crowdsource best places to eat in forest www.hw.ac.uk/news/2026/sp...
hw.ac.uk
Spider monkeys crowdsource best places to eat in forest
Seven years of collaborative research involving Heriot‑Watt shows spider monkeys use collective intelligence to locate the best fruit.
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Reposted by Gabriel Ramos-Fernandez
New papers in Network Science @networkspapers.bsky.social · 26/01/2026
npj Complex.: Uncovering complementary information sharing in spider monkey collective foraging using higher-order spatial networks www.nature.com/articles/s44260-025-…
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
🐒🧠 New paper in npj Complexity: complementary information sharing in fission-fusion dynamics. Video explainer: youtu.be/PIAhcLWqsO8?... Full paper (open access): doi.org/10.1038/s442... Higher-order spatial networks enable distributed foraging knowledge in heterogeneous environments. 👇
youtu.be
Uncovering complementary information sharing in spider monkey collective foraging
YouTube video by Global Research Centre for Diverse Intelligences
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
Fission-fusion dynamics implies distributed information processing analogous to that occurring in "liquid brains." Collective intelligence through complementary knowledge sharing! 🧠✨ Collaborators:Ross S. Walker, @mattjsilk.bsky.social, Denis Boyer and @sandrateles-esmag.bsky.social
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
Maximal simplicial degree centrality shows sigmoidal scaling with simplex size: intermediate-sized simplices (4-6 individuals) are most central to the network. Centrality is independent of age, sex, or immigration status → knowledge asymmetry driven by mobility, not individual traits.
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
These holes persist across multiple filtration values, indicating robust complementarity. Even when including less redundant interactions, spatial overlaps don't form trivial structures - unique knowledge pockets remain across various subset sizes.
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
We constructed filtered simplicial complexes using α as a filtration parameter (scaled by deviation from w*). Persistent homology reveals topological holes, which we interpret as structural signatures of complementary information distribution 🕸️
Persistence barcodes for the simplicial complexes in each season, including the simplices of individual core ranges formed by decreasingly redundant interactions.
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
We found that in some cases, the observed w values closely follow the predicted convex decreasing function of set size n. Smaller sets (2-6 individuals) show higher variance, suggesting this range is most dynamic for knowledge complementarity.
Scaling relationship between the number of individual core ranges and its intersection/union ratio, w. Each dot corresponds to a particular set of a given number of individuals. The solid black line corresponds to the scaling relationship.
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
We derived an optimal intersection/union ratio (w*) that maximizes information transfer between n individuals: w* = 1/(n+1) This balances redundant overlap (coincidence opportunities) with unique knowledge (areas known exclusively by subsets).
Conceptual illustration of the degree of redundancy and uniqueness shown by four hypothetical overlapping individual core ranges.
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
We estimated individual core ranges (60% utilization distributions) from 6 years of location data in Yucatan, Mexico. We assumed that these core ranges represent an individual's spatial knowledge for a given season, while partial overlaps create opportunities for information transfer.
Two sets of overlapping core ranges showing both redundant and unique areas
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
Spider monkeys (Ateles geoffroyi) exhibit high fission-fusion dynamics - individuals form subgroups that join and split frequently. We asked whether distributed spatial knowledge across individuals enabled collective processing of foraging information beyond individual capacity.
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/01/2026
🐒🧠 New paper in npj Complexity: complementary information sharing in fission-fusion dynamics. Video explainer: youtu.be/PIAhcLWqsO8?... Full paper (open access): doi.org/10.1038/s442... Higher-order spatial networks enable distributed foraging knowledge in heterogeneous environments. 👇
youtu.be
Uncovering complementary information sharing in spider monkey collective foraging
YouTube video by Global Research Centre for Diverse Intelligences
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Gabriel Ramos-Fernandez @grf.bsky.social · 30/12/2025
Thrilled to see this paper out, two years after starting our collaboration at @divintelligence.bsky.social
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Gabriel Ramos-Fernandez @grf.bsky.social · 01/10/2025
Always uniquely funny and inspiring. Here at one of the first conferences I attended as a grad student, the Animal Social Complexity and Intelligence conference in Chicago, in 2000. Thank you Jane Goodall.
Jane Goodall with the rest of participants at the Animal Social Complexity and Intelligence conference, Chicago, 2000
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Gabriel Ramos-Fernandez @grf.bsky.social · 04/06/2025
bsky.app/profile/grf....
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Andrew King @shoalgroup.bsky.social · 03/06/2025
New paper in @behavecol.bsky.social (link: academic.oup.com/beheco/advan...) led by PhD student @marcofele.bsky.social using hard-won data from our amazing baboon team. Our @swanseauni.bsky.social press release: www.swansea.ac.uk/press-office... We introduce the idea of a "social spandrel".....
swansea.ac.uk
Baboons walk in line for friendship, not survival, new study finds
Researchers at Swansea University have discovered that baboons walk in lines, not for safety or strategy, but simply to stay close to their friends.
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NetScience @netscience.bsky.social · 28/05/2025
Uncovering complementary information sharing in spider monkey collective foraging using higher-order spatial networks arxiv.org/abs/2505.01167
arxiv.org
Uncovering complementary information sharing in spider monkey collective foraging using higher-order spatial networks
Collectives are often able to process information in a distributed fashion, surpassing each individual member's processing capacity. In fission-fusion dynamics, where group members come together and s...
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/05/2025
5/5 combined knowledge has complementarity: each individual fills in parts of the puzzle that others miss. We argue that the ever-changing structure of these groups helps them collectively adapt and make the most of their shared knowledge in unpredictable environments. 🐒 🧩 🐒 = 🧠
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/05/2025
4/5 to share key information, but also enough unique knowledge to cover more ground. To model these interactions, we used a mathematical approach (simplicial complexes) that captures how multiple animals exchange information at once. This revealed 'gaps' in different dimensions—meaning the group’s…
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/05/2025
3/5 track changes in their environment better than any individual could on its own. We studied how much individual animals' core ranges overlap, treating these overlaps as a way to measure shared vs. unique knowledge of food sources. Some range combinations strike a balance: they have enough overlap
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/05/2025
2/5 Groups can often process information together more effectively than any single member could alone. In species with fission-fusion dynamics—where animals frequently split up and reunite (like dolphins or chimpanzees)—sharing different bits of knowledge about food locations helps the whole group…
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/05/2025
🧪New preprint: “Uncovering complementary information sharing in spider monkey collective foraging using higher-order spatial networks” in collaboration with Ross Walker, @mattjsilk.bsky.social, Denis Boyer and @sandrateles-esmag.bsky.social arxiv.org/abs/2505.01167 🧵 1/5
arxiv.org
Uncovering complementary information sharing in spider monkey collective foraging using higher-order spatial networks
Collectives are often able to process information in a distributed fashion, surpassing each individual member's processing capacity. In fission-fusion dynamics, where group members come together and s...
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Gabriel Ramos-Fernandez @grf.bsky.social · 23/04/2025
Preprint: The causal role of synergy in collective problem solving. Great collaboration with DISI fellows @ketikagarg.bsky.social @culturologies.co, Zara Anwarzai and Hannah Dromiack
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Gabriel Ramos-Fernandez @grf.bsky.social · 09/04/2025
With colleagues from our social complexity seminar, we joined the debate in BBS on "What is a society" by M. Moffett. We argue that a society can emerge from social interaction patterns without the need for establishing an a priori limit on who actually belongs to it doi.org/10.1017/S014...
doi.org
Group identity without social interactions? | Behavioral and Brain Sciences | Cambridge Core
Group identity without social interactions? - Volume 48
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/03/2025
“Everything is political, especially the things that people tell you are not political. Those are the most political of all”
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Alison Phipps አሊሰን @alisonphipps.bsky.social · 01/03/2025
Good stuff here from @bylines.scot “Take control of your own news feed. Create your own media stream instead of relying on social media algorithms. Subscribe directly to trusted news sites or newsletters and set aside time for intentional reading” bylines.scot/society/a-ci...
bylines.scot
A citizen’s guide to taking action for political change
Instead of feeling frustrated and powerless when faced with unpopular change, try these steps to build momentum towards your desired outcome
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Gabriel Ramos-Fernandez @grf.bsky.social · 20/02/2025
This summer school is a life- and mind-changing experience for any early career researcher, student or postdoc, as well as a wonderful experience for artists and storytellers. I could not recommend it more highly
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Dr Dean Burnett @drdeanburnett.bsky.social · 09/02/2025
No, Elon Musk didn't put a chip in anyone's brain, and we should not be terrified theneuroscienceofeve... A rapid-response post to a current article which suggests that Musk's brain-control abilities are waaaay beyond what they actually are Like/subscribe etc. #Musk #Brians #Neuralink #Science
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Gabriel Ramos-Fernandez @grf.bsky.social · 05/02/2025
Thanks for doing this! can you please add me?
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Gabriel Ramos-Fernandez @grf.bsky.social · 04/02/2025
Meanwhile… www.euractiv.com/section/agri...
euractiv.com
EU and Mexico seal updated trade deal - Euractiv
Mexico is the EU's second largest trading partner in Latin America.
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Gabriel Ramos-Fernandez @grf.bsky.social · 04/02/2025
So cute
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Gabriel Ramos-Fernandez @grf.bsky.social · 27/01/2025
Great essay by @neurograce.bsky.social bsky.app/profile/neur...
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Gabriel Ramos-Fernandez @grf.bsky.social · 26/01/2025
Don’t leave the agency to the robots gracewlindsay.com/2025/01/24/2... ht @melaniemitchell.bsky.social
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Gabriel Ramos-Fernandez @grf.bsky.social · 20/01/2025
Trump threatens a global trade war. Europe must unleash a radical alternative | Gabriel Zucman www.theguardian.com/commentisfre...
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Gabriel Ramos-Fernandez @grf.bsky.social · 04/12/2024
“it can be easy to mistake the complexity of the mathematics in a theory paper for the importance of the new biological insight that ensues.”
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Gabriel Ramos-Fernandez @grf.bsky.social · 04/12/2024
“We can also use theory to ask the following question: how might a biological system solve a particular problem?”
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Gabriel Ramos-Fernandez @grf.bsky.social · 04/12/2024
“for me as a biologist, theory is valuable because it enables us to ask which of our results are likely to be general and which depend on the particular characteristics of our experimental system.”
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Gabriel Ramos-Fernandez @grf.bsky.social · 03/12/2024
Insightful essay on the value of theoretical papers for empirical research elifesciences.org/articles/60703
elifesciences.org
Living Science: Theoretical musings
The best theory papers help experimentalists to identify which of their results might be general and to plan a path through the maze of all possible future experiments.
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Wisdom🦋 @wisdomexplained.bsky.social · 08/09/2024
Sell your cleverness and buy bewilderment. Cleverness is mere opinion. Bewilderment brings intuitive knowledge. Rumi, Sufi scholar and poet (1207–1273)
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Gabriel Ramos-Fernandez @grf.bsky.social · 21/08/2024
What adds to the strangness is that the captain "didn't see it coming" despite the name of his ship...
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Gabriel Ramos-Fernandez @grf.bsky.social · 17/07/2024
🎧 ▶️ babastiltzofficial.bandcamp.com/album/stockh...
babastiltzofficial.bandcamp.com
Stockholm Remixes, by Baba Stiltz
4 track album
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