Hjalmar Bang Carlsen's Avatar

Hjalmar Bang Carlsen

@hjalmarcarlsen.bsky.social

Associate Professor, Center for Social Data Science(SODAS), University of Copenhagen. Background in sociology, substantive research in civic participation, methods research in mixed methods approaches to digital data.

337 Followers  |  212 Following  |  45 Posts  |  Joined: 23.10.2023  |  2.433

Latest posts by hjalmarcarlsen.bsky.social on Bluesky

OSF

New working paper with Tom Robinson, Laura Fung and Caroline Roberts. We use an LLM to classify occupations in surveys in real time, probing 'intelligently' when more info is needed. Results show big reductions in cost, time and respondent burden.

osf.io/preprints/so...

09.08.2025 16:58 β€” πŸ‘ 4    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0

Looks like a super useful application.

09.08.2025 19:28 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The Human Toll

The US is undergoing rapid social, economic, and policy change. 

If you've been impacted, we want to hear your story!

To participate, visit: https://tinyurl.com/thehumantoll

Study sponsored under University of Wisconsin-Madison IRB Protocol #2025-1096. PI: Dr. Jessica Calarco

Participants must be at least 18 years of age and reside in the US

[image of a person with their face in their hands]

The Human Toll The US is undergoing rapid social, economic, and policy change. If you've been impacted, we want to hear your story! To participate, visit: https://tinyurl.com/thehumantoll Study sponsored under University of Wisconsin-Madison IRB Protocol #2025-1096. PI: Dr. Jessica Calarco Participants must be at least 18 years of age and reside in the US [image of a person with their face in their hands]

If you want to share your story--or share what you'd say to the people responsible for the current changes in the US--you can do so at the link below. And please share widely! It's essential that we document the human toll.

tinyurl.com/thehumantoll

01.08.2025 17:30 β€” πŸ‘ 14    πŸ” 12    πŸ’¬ 3    πŸ“Œ 0

Get the latest on social science methods and AI

01.08.2025 19:17 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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The "can you have" of this world.

01.08.2025 19:14 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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My department at Leuphana University offers 6 fully funded PhD scholarships (incl. research funding) for three years.

If you are interested in studying democratic resilience (particularly party competition and elections πŸ€“) and you have a strong methodolgical background: Apply!

shorturl.at/kcTbG

28.07.2025 09:50 β€” πŸ‘ 170    πŸ” 128    πŸ’¬ 3    πŸ“Œ 1
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Assistant Professor - Madison, Wisconsin, United States Current Employees: If you are currently employed at any of the Universities of Wisconsin, log in to Workday to apply through the internal application process.Job Category:FacultyEmployment Type:Regula...

We're hiring! Please share with your networks!

The Department of Sociology at the University of Wisconsin-Madison invites applications for a tenure-track position at the rank of assistant professor in the field of demography of health and aging beginning in August 2026
jobs.wisc.edu/jobs/assista...

29.07.2025 16:41 β€” πŸ‘ 93    πŸ” 101    πŸ’¬ 3    πŸ“Œ 3

Super important agenda paper on the use of AI in survey research. Good to see that AI as interviewer is getting the attention it deserves(most have focus on AI as respondent).

27.07.2025 08:04 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Faculty Positions in Organizational Behavior Learn about tenured and non-tenured faculty positions open in the organizational behavior area at Stanford GSB.

The Stanford GSB is hiring in macro & micro OB! If you do sociology, psychology, OB, strategy, management, computational social science, please apply.

On the macro side, mid-career folks are especially invited to apply.

See hereπŸ‘‡
www.gsb.stanford.edu/jobs/faculty...

24.07.2025 21:29 β€” πŸ‘ 16    πŸ” 17    πŸ’¬ 0    πŸ“Œ 2

Vienna is pretty high on my list of liveable cities and so it should be on yours... consider applying

21.07.2025 14:13 β€” πŸ‘ 22    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0

Want to access the slides and the notebook for this session on LLM for Content Analysis in the Social Sciences? Here they are! www.css.cnrs.fr/llm-power-to....

Information about Text classification; Information Extraction, Text Clustering with encoders and decoder models.

21.07.2025 12:40 β€” πŸ‘ 35    πŸ” 13    πŸ’¬ 0    πŸ“Œ 0

We draw on prior efforts of @felixchopra.bsky.social,
@kunkakom.bsky.social, @ihaal.bsky.social, Friedrich Geiecke and Xavier Jaravel.

21.07.2025 13:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

In the context of #IC2S2 2025:

I would like to hear your thoughts on the future of Computational Social Science.

What do you see as the biggest opportunities and challenges ahead?

It’s a short, AI-led interview.
Interested? Start your interview here:

www.ainterviewer.dk/interview?id...

21.07.2025 13:38 β€” πŸ‘ 10    πŸ” 3    πŸ’¬ 0    πŸ“Œ 3

πŸ“’ I’ll be presenting our new work on AI-led vs. human-led chat-based interviews at #IC2S2 in NorrkΓΆping this week!

Curious about AI-interviewing, large-N qual data, building your own chatbot for research, or collaborating? Please reach out(DM is open)

For more see thread.

Preprint: osf.io/k7f89

21.07.2025 13:27 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1

Thanks to my co-authors Semra, Tobias and @andbjn.bsky.social and to the @villumfonden.bsky.social foundation and @cphsodas.bsky.social who have both founded the AI-interview project.

21.07.2025 13:15 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Of course, there are big challenges to this kind of experimental comparison 🧡

1) Data quality in qual interviews isn’t standardized
2) It’s rarely operationalized as quantitative measures
3) Chat-based interviews β‰  in-depth, face-to-face interviews
4) Small N

Important limitations to keep in mind.

21.07.2025 13:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
OSF

πŸ“„ Read the preprint: osf.io/k7f89

If you're working on or curious about AI-interview methods, feel free to reach out (DMs open)!

This is part of a broader project developing the AI-interviewer, led together with @annarogers.bsky.social

21.07.2025 13:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Why this matters 🧡

1) AI-interviewers can yield reasonable data quality, supporting their promise for large-scale qualitative research.

2) As opposed to other AI-interview studies, we used a locally hosted, open-weight modelβ€”boosting data security, transparency & reproducibility.

21.07.2025 13:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image Post image

Key results 🧡:
🧠 Human-led: longer answers per question
πŸ• AI-led: longer interviews overall (faster question delivery)
πŸ“‹ No dif in response quality (specificity + relevance)

LLMs do pretty wellβ€”
But responses are short compared typical qualitative interviews.

21.07.2025 13:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

We ran an experiment with 40 students 🧡.
Participants were randomly assigned to be interviewedβ€”via text chatβ€”by either:

πŸ€– a locally hosted AI chatbot
πŸ‘©β€πŸ« or a trained human interviewer

Same interview guide. Same interface.
Different interviewers formulating different probes.

What did we find?

21.07.2025 13:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

🚨 New preprint!
"Comparing AI-led to human-led chat-based interviews"
Can LLMs collect interview data similar to human RAs?

Turns out… yes (mostly).

Note: these were text interviewsβ€”not directly comparable to in-depth, face-to-face qualitative interviews.

Led by Semra Guven & @gaardhus.dk
πŸ§΅πŸ‘‡

21.07.2025 13:15 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 3

I do not hope that citizens are using chatgpt for learning about politics, at least not DK and other smaller countries. It places Enhedslisten together with Danish People party and Ny Borgerlig on the issue of immigration.

14.04.2025 13:20 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Do Large Language Models Solve the Problems of Agent-Based Modeling? A Critical Review of Generative Social Simulations Recent advancements in AI have reinvigorated Agent-Based Models (ABMs), as the integration of Large Language Models (LLMs) has led to the emergence of ``generative ABMs'' as a novel approach to simula...

Large Language Model-based social simulation has emerged as an exciting new research method.

But do LLMs actually resolve the problems that have historically limited use of Agent-Based Models? What do they bring?

We review the literature to find out!

with Maik Laaroij
arxiv.org/abs/2504.03274

07.04.2025 14:17 β€” πŸ‘ 28    πŸ” 10    πŸ’¬ 5    πŸ“Œ 2
Massachusetts Institute of Technology, Institute for Data, Systems, and Society Job #AJO29859, Postdoctoral Associate, Institute for Data, Systems, and Society, Massachusetts Institute of Technology, Cambridge, Massachusetts, US

Postdoc position at MIT IDSS focused on collective judgment & decision-making in human–AI hybrid networks. Please apply or share!
academicjobsonline.org/ajo/jobs/29859

02.04.2025 16:30 β€” πŸ‘ 6    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0
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UCL – University College London UCL is consistently ranked as one of the top ten universities in the world (QS World University Rankings 2010-2022) and is No.2 in the UK for research power (Research Excellence Framework 2021).

Hiring again! Lecturer in Sociology. We're looking for someone strongly anchored in sociology through high-profile contributions, and with the ability to appeal to students and colleagues of various methodological orientations.
www.ucl.ac.uk/work-at-ucl/...

21.03.2025 15:48 β€” πŸ‘ 52    πŸ” 44    πŸ’¬ 1    πŸ“Œ 2
Are you a scientist who has lost funding or grants in recent weeks? - Formstack

πŸ”¬πŸ§ͺ🧬 SCIENTISTS! we are collecting stories from folks whose research has been disrupted by the Trump admin. Whether you’re a grad student, postdoc, faculty, we want to hear from you! ty to everyone who has already shared.

my signal: caitlingilbert.24

thewashingtonpost.formstack.com/forms/scient...

20.03.2025 15:15 β€” πŸ‘ 168    πŸ” 130    πŸ’¬ 7    πŸ“Œ 6

Join our group in Leipzig: 3-year fully funded postdoc intersecting climate research + text analysis + sociology
πŸ”—https://uni-leipzig.b-ite.careers/jobposting/19cb49183f1e25db8462734e444cb5dd476862ea0

20.03.2025 15:29 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
AI generated photograph featuring a group of people sat around a table and code overlayed

AI generated photograph featuring a group of people sat around a table and code overlayed

πŸ“£Call for papers!

1️⃣ week left to send your 250-word abstract for @audreyalejandro.bsky.social and β€ͺ@dandekadt.bsky.social‬'s two-day workshop on "Computational Social Science meets Qualitative Research"

Learn more➑️ www.lse.ac.uk/Methodology/...

@lsedatascience.bsky.social

19.03.2025 09:30 β€” πŸ‘ 6    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1
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SODAS Lecture with Kevin Munger SODAS Lecture on the effects of TikTok on the evaluation of politicians with Kevin Munger.

Join us for the first SODAS Lecture of the spring on March 21! πŸ“…

Kevin Munger will kick off the lecture series with a talk on the effects of TikTok edits on evaluations of politiciansπŸ“±

EventπŸ”—: sodas.ku.dk/events/sodas...

20.03.2025 11:36 β€” πŸ‘ 2    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

@hjalmarcarlsen is following 20 prominent accounts