Gianmarco De Francisci Morales

📣 CS2Italy 2026 the Italian Conference on Computational Social Science
⏰ Today is the last day to submit your abstract

📍 Turin, May 19–21

We welcome abstract submissions in:
#ComputerScience #NetSci #ComplexSystems #Sociology #Economics #Politics #CognitiveScience #Psychology

👉 cs2italy.org

Submit your abstracts to CS2Italy by 👉 Jan 15 👈
Italian Conference on Computational Social Science
to join us in Turin on May 19-21

We welcome abstract submissions on #computerscience #netsci #complexsystems #sociology #economics #politics #cognitivesci #psychology and more

For more: cs2italy.org

Today, social media platforms hold the sole power to study the effects of feed-ranking algorithms. We developed a platform-independent method that reranks participants’ feeds in real time and used this method to conduct a preregistered 10-day field experiment with 1256 participants on X during the 2024 US presidential campaign. Our experiment used a large language model to rerank posts that expressed antidemocratic attitudes and partisan animosity (AAPA). Decreasing or increasing AAPA exposure shifted out-party partisan animosity by more than 2 points on a 100-point feeling thermometer, with no detectable differences across party lines, providing causal evidence that exposure to AAPA content alters affective polarization. This work establishes a method to study feed algorithms without requiring platform cooperation, enabling independent evaluation of ranking interventions in naturalistic settings.

New paper in Science:

In a platform-independent field experiment, we show that reranking content expressing antidemocratic attitudes and partisan animosity in social media feeds alters affective polarization.

🧵

🔈 *Call for Participation* 🔈

Italian Conference on Computational Social Science – CS2Italy
May 19-21, 2026 in Torino, Italy

Premier venue for Computational Social Science in Italy: #sociology #polisci #economics #netsci #complexsystems ++

Submit your abstract by Jan 15: cs2italy.org

plz reshare

🏆 We have won a Methods Recognition award at #CSCW2025 for our paper about Narratives of War in the Ukrainian memetic warfare!

Link to the paper: arxiv.org/abs/2309.08363

With @yelenamejova.bsky.social , Arthur Capozzi, @gdfm.bsky.social and myself.

Huge thanks to @acm-cscw.bsky.social !

Comparing Data Assimilation and Likelihood-Based Inference on Latent State Estimation in Agent-Based Models In this paper, we present the first systematic comparison of Data Assimilation (DA) and Likelihood-Based Inference (LBI) in the context of Agent-Based Models (ABMs). These models generate observable t...

While limited to one ABM, this work fills a critical gap in the ABM calibration literature, providing the first structured comparison of DA and LBI for latent state inference.

Kudos to Marco, Corrado, and Gianmarco for such a wonderful collaboration!

Hope you enjoy it
👉 arxiv.org/abs/2509.17625

🚨 Fresh from ArXiv:
“Comparing Data Assimilation and Likelihood-Based Inference on Latent State Estimation in Agent-Based Models”
with @marcopangallo.bsky.social, @c0rrad0.bsky.social, & @gdfm.bsky.social
👉 arxiv.org/abs/2509.17625

Mango Mussolini is the new expression that I didn’t know I needed until now!

Almost back from #ic2s2 (thanks Lufthansa). The most positively-surprising impression from the conference, almost a decade after the first edition, is how much the discipline has coalesced. In 2016, it was easy to distinguish a paper authored by computer scientists vs sociologists. Not so easy now!

Agreed. And to do so we need to stop using tools that were developed to measure human concepts.

🚨 Study alert!

We've developed a prototype that enables you to create personalized social media feeds using natural language rules and import them into Bluesky.

Join our study to try out the tool, give us your feedback, and earn a $50 gift card!

Sign up: forms.gle/MkSGKzxDfBEc...

Please share :)

FOMO for #ic2s2 is hitting hard---especially for Francesco, who is bravely pretending he’s totally fine without me.

Go check out our poster on early linguistic fingerprints of conspiracy theorists on Reddit (w. @gdfm.bsky.social )!

Full paper here: arxiv.org/abs/2506.05086

@c0rrad0.bsky.social presenting our work on the Russia-Ukraine war on social media #ic2s2

If you're @ic2s2.bsky.social #IC2S2 and are looking for a faculty position, get in touch. @uni-saarland.de is hiring.
Right now, there's an open call in Computer Science @saarland-informatics-campus.de: www.uni-saarland.de/fileadmin/up...
Soon, there'll be open calls in the Social Sciences.

Causality center stage at #ic2s2 with opening keynote by @eckles.bsky.social

Moral judgments in online discourse are not biased by gender Scientific Reports - Moral judgments in online discourse are not biased by gender

🚨Are moral judgements biased by the gender of the subject?
We find *no* direct effect when looking at Reddit!

Our causal study design is based on carefully matching similar situations that people with different genders experience (and share).

Study led by @loreb92.bsky.social

rdcu.be/eumlQ

Hugging my poster at @icwsm.bsky.social! 🥰

Back in Copenhagen to present "Variational Inference of Parameters in Opinion Dynamics Models"!
Great time here, meeting all my @nerdsitu.bsky.social friends and creating new connections in the community!

ojs.aaai.org/index.php/IC...

Our paper "Conspiracy theories and where to find them on TikTok" has been accepted at the Main conference of @aclmeeting.bsky.social 2025!

Great work led by @fracorso.bsky.social supervised by @gdfm.bsky.social and yours truly.

For more details check the preprint: arxiv.org/abs/2407.12545

Great experience in Sydney at #WWW2025!

Today I presented the paper "Causal modeling of climate activism on Reddit", the work done during my visiting period in Copenhagen with the amazing team @c0rrad0.bsky.social, @lajello.bsky.social, @gdfm.bsky.social!

dl.acm.org/doi/10.1145/...

📢 Deadline Extended! 🚨
6th Workshop on Data for the Wellbeing of the Most Vulnerable at #ICWSM2025!

🗓️ New Deadline: April 7th, 2025
Submit your abstract or paper
🔗 tinyurl.com/DWMV25

#DataForSocialGood

@yelenamejova.bsky.social @danielapaolotti.bsky.social @isi.it @icwsm.bsky.social

One day remaining to submit to our #ICWSM Workshop on #Data for the Wellbeing of the Most #Vulnerable -- submit your short and long papers by March 31!

sites.google.com/view/datafor...

Ph.D. and postdoc positions in Data Science for epidemic preparedness at the NERDS research group The NERDS (NEtwoRks, Data, and Society) team at the IT University of Copenhagen welcomes applications from aspiring PhD students and postdocs in the areas of Da

I am hiring PhD students and Postdocs to join me in beautiful Copenhagen. Together, we will develop data science methods to improve epidemic preparedness.

Copenhagen is amazing, salary is good, we have plenty of funding, and a great community.

Read more..: candidate.hr-manager.net/ApplicationI...

📢📢📢"The Relativity of Causal Knowledge"

THANK YOU to @clabat9.bsky.social for working side by side with me on this exciting project and making this article possible. Big thanks also to @hansmriess.bsky.social and Fabio Massimo Zennaro for their valuable feedback on an earlier version of the paper.

See you in the amazing Copenhagen! 🍻🇩🇰

Extended abstract of "Variational Inference on Parameters of Opinion Dynamics Models" accepted at @icwsm.bsky.social !

Big thanks to @gdfm.bsky.social and Fabrizio Silvestri!

Check the arXiv
arxiv.org/pdf/2403.05358

(TL;DR: Model + Data = ❤️)

📢 Meet the keynote speakers of the upcoming #ICWSM Workshop on #Data for the Wellbeing of the Most #Vulnerable

👉 Paddy Brock at World Bank & UNHCR Joint Data Center
👉 @robysinatra.bsky.social at University of Copenhagen

Join us! Submission deadline: March 31 sites.google.com/view/datafor...

Stylized map of Detroit (MI) showing the highway network, and the network of social connections between urban residents. The connections intersecting highways are sparser than elsewehere. Image credit Karo Berghuber (Insta: @kariot.lines)

"Urban Highways Are Barriers to Social Ties" out on PNAS!
The 1st large-scale measure of how highways weaken social connections between the communities they separate. This barrier effect is strong in the 50 largest US cities--especially for low-income Black communities.
www.pnas.org/doi/10.1073/...

Doctoral student in machine learning with focus on explainable clustering Project description Third-cycle subject: Computer Science We are looking for a highly-qualified and motivated individual to pursue a PhD in the area of machine learning with focus on explainable clust

Join my group in KTH Royal Institute of Technology! One PhD position available funded by the Swedish Research Council (VR). Application deadline on March 6, 2025. More details at: kth.varbi.com/en/what:job/...

📢 CfP: #ICWSM2025 Workshop on
#Data for the Wellbeing of the Most #Vulnerable

👉 #AI #NLP #epidemiology #demography #sociology #humanitarian #datascience
submit your abstract, or short or long paper by
⏰ March 31
sites.google.com/view/datafor...

w/ @kyriakikalimeri.bsky.social + Daniela Paolotti

The Role of Science in the Climate Change Discussions on Reddit Collective and individual action necessary to address climate change hinges on the public's understanding of the relevant scientific findings. In this study, we examine the use of scientific sources i...

👉 preprint:
The Role of Science in the Climate Change Discussions on Reddit
how was science cited in the past 14 years? preprints or journals?
find answers are here: arxiv.org/abs/2502.05026
w/ Paolo Cornale @mictiz.bsky.social @kyriakikalimeri.bsky.social @elisaomodei.bsky.social Daniela Paolotti

📣 The PhD Open Call 2025 is now open! Get in touch with us to apply for a PhD with NERDS in beautiful Copenhagen. Deadline: Feb 24th

nerds.itu.dk/2025/01/31/p...