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Gael Le Mens

@glemens.bsky.social
78 followers 32 following 5 posts

Full Professor in the department of Economics and Business at Universitat Pompeu Fabra. I study how people, organizations and machines learn.

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Reposted by Gael Le Mens
Alexandros Gelastopoulos @alexgelas.bsky.social · 26/02/2026
1/ Why do inferior but popular things remain popular? Excited to share our new paper with @pantelispa.bsky.social, @glemens.bsky.social & @arnoutvanderijt.bsky.social "The marginal majority effect: When social influence produces lock-in" www.science.org/doi/epdf/10....
science.org
The marginal majority effect: When social influence produces lock-in
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Reposted by Gael Le Mens
Aina Gallego @ainagallego.bsky.social · 02/02/2026
📢 Publication alert: Governments are investing in digitalization intensively, but we know little about who supports this policy. We investigate this question in this new article with Alex Kuo, @retobuergisser.bsky.social, and @siljahausermann.bsky.social published at JEPP doi.org/10.1080/1350... 🧵
doi.org
Who wants to accelerate digitalization? Evidence from the next generation EU program
Post-industrial governments around the world are increasingly prioritizing policies to accelerate digitalization, but despite the growing literature on technological change and the knowledge econom...
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Political Analysis @polanalysis.bsky.social · 28/05/2025
Currently in FirstView: “Positioning Political Texts with Large Language Models by Asking and Averaging.” @glemens.bsky.social‬ and @ainagallego.bsky.social use a variety of LLMs to take in political texts and position political actors in policy and ideological space.
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Reposted by Gael Le Mens
George Wu @geowu.bsky.social · 07/02/2025
A new working paper with Daniel Banki, @urisohn.bsky.social and Robert Walatka, just submitted to SSRN. The paper is comment on Ryan Oprea's recent AER paper. The paper is processing, but you, my friends, get early entry. papers.ssrn.com/sol3/papers....
Title Authors Abstract (Decision under Risk are Decisions Under Complexity: Comment)
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Aina Gallego @ainagallego.bsky.social · 31/01/2025
Can DeepSeek accurately scale political text? @glemens.bsky.social just replicated the analyses of our joint Political Analysis paper with DeepSeek and with the newest version of Llama (Llama 3.3 70B). Overall, DeepSeekV3 performs at a level similar to Llama 3.3, but definitely not better. 1/5
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Gael Le Mens @glemens.bsky.social · 29/01/2025
thank you for the pointer! I was not aware of this interesting paper. It was probably developed concurrently to ours. Though the presentation of ideas is different, I was happy to see that the overall perspective the authors advance is consistent with how we think of LLMs as measurement tools.
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Gael Le Mens @glemens.bsky.social · 28/01/2025
Note also that we advocate the use of open models that can be run locally - this is crucial for ensuring replicability.
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Gael Le Mens @glemens.bsky.social · 28/01/2025
Bart, we do no promise unbiased results... We provide evidence of high accuracy with respect to a benchmark based on human coding. As pointed out in another response, Egami et al's DSL approach can improve on our approach. The field is moving fast (our paper was written a year ago).
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Gael Le Mens @glemens.bsky.social · 28/01/2025
But clearly, one can (should) use the DSL technique on the position estimates produced by our approach since the high accuracy we obtain does not guarantee the absence of systematic bias wrt human coding.
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Gael Le Mens @glemens.bsky.social · 28/01/2025
Thanks Nicolai for the pointer! Indeed Egami et al.'s technique came out after we wrote the core of our piece.
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Aina Gallego @ainagallego.bsky.social · 28/01/2025
📢 Our new paper in Political Analysis explains how to use LLMs like GPT-4o, Llama or Mistral to estimate the ideological and policy position of political texts. Our approach is fast, reliable, cost-effective and reproducible and works with texts written in different languages 1/7 cup.org/4axBEXo
cup.org
Positioning Political Texts with Large Language Models by Asking and Averaging | Political Analysis | Cambridge Core
Positioning Political Texts with Large Language Models by Asking and Averaging
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