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Charlie Rahal

@crahal.com

Associate Professor of Data Science and Informatics at the University of Oxford.

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21.11.2024
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Latest posts by Charlie Rahal @crahal.com

Californian housing dataset over the problematic Boston housing dataset.

04.01.2026 18:12 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The quote of the year came late, but it’s good:

β€œThis is LLM generated nonsense. You make a mockery of real research. Do not submit this again.”

If the originator of the quote sees this, you will remain entirely anonymous I assure you, but I want you to know that I appreciate you.

Happy holidays!

24.12.2025 17:44 πŸ‘ 53 πŸ” 8 πŸ’¬ 0 πŸ“Œ 1

πŸ“–πŸ‘¨β€πŸ’»πŸŽ“ New Courses Alert πŸŽ“πŸ‘¨β€πŸ’»πŸ“–

The Leverhulme Centre for Demographic Science is launching three upcoming short courses designed for researchers across health, economics, and the social sciences. Led by experts in the field β€” including @crahal.com β€” these courses are now open for registration.πŸ‘‡

24.11.2025 12:03 πŸ‘ 6 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
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A pleasure to host @philipncohen.com this week for a fantastic talk on pronatalism & many more engaging discussions about open science, public engagment, and more!
#demography @nuffieldcollege.bsky.social @drjenndowd.bsky.social @melindacmills.bsky.social @crahal.com @ridhikashyap.bsky.social

14.11.2025 13:41 πŸ‘ 22 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

I've convened CSS sessions with lecturers wanting to give tutorials in R as the primary language, but they've inevitably had to involve Python at some stage. I've observed but much less frequently seen the reverse. This isn't a bait, but why not just start with Python?

06.11.2025 23:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

We're holding brief/extremely informal 15 minute meetings with anyone who is interested in either of these positions, scheduled for 19.11.2025 and 17.11.2025, respectively. Email or DM for more information!

Please do share details within your network; I think these projects are pretty cool!

11.10.2025 06:54 πŸ‘ 7 πŸ” 8 πŸ’¬ 0 πŸ“Œ 0

Thrilled to serve as TPC co-chair (/w @chenyang03.bsky.social) for the brilliant International Conference on Social Computing! πŸš€

See @i-c-s-c.bsky.social for updates!

πŸ“… Papers: October 20th!
πŸ”— Full details: icsc-conf.github.io/2025/

Let’s push the frontiers of #CSS, #DataScience, #LLM, and #AIπŸ’‘βœ¨

01.10.2025 18:47 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸŽ‰Our metrics-and-models.github.io lab announces first hybrid seminar in conjunction with @oxforddemsci.bsky.social🚨

"Nonparametric Causal Decomposition of Group Differences: New Mechanisms & New Methods"

Speaker: Felix Elwert
When: October 8th, 2025
Where: @nuffieldcollege.bsky.social

29.09.2025 17:48 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

A paper of ours just got rejected from a leading computer science journal for being β€˜too technical’ and for some disturbing reason the inner economist in me is really proud.

18.09.2025 12:24 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The utility of this data resource cannot be understated. Infinite respect to all of the incredibly talented people who worked on it! 😍

05.09.2025 21:37 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Now, about that last paper i submitted to Sociological Science... πŸ˜‚

05.09.2025 13:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸ«‚πŸ«‚πŸ«‚πŸ«‚

05.09.2025 12:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1

p.s. thanks again for asking; your tag made me finally get round to fixing about ten issues we had open on GitHub and internally over the weekend.

Always looking for some additional #dev #devops #datascience #genomic #frontend help on this, in case anyone is interested in collaborating on v2.0.0!

01.09.2025 18:47 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Thanks for asking! Its almost like we made a way to automatically track this on a daily basis, @pietrobiroli.bsky.social 🀩!

Kindly see gwasdiversitymonitor.com.

See also: Mills, M. C., & Rahal, C. (2020). The GWAS Diversity Monitor tracks diversity by disease in real time. Nature genetics, 52(3).

01.09.2025 18:47 πŸ‘ 4 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

This summer wasn't too bad to be fair!

01.09.2025 12:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The first is with the Oxford EPSRC CDT in Healthcare Data Science πŸ§‘β€πŸ’»πŸ’Š, and the second with the DPhil in Population Health πŸŒπŸ“Š. Both need serious programming chops πŸ’ͺ, but each tackles different big questions β€” so hopefully there’s something here for everyone to get excited about! πŸš€

01.09.2025 11:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸ₯³ Thrilled to bits about this! The first project is with the forever brilliant @melindacmills.bsky.social, and the second with the dream team of @sanderwagner.bsky.social & @dvaldenegro.bsky.social!

I honestly can’t wait to begin supervising these exciting projects togetherπŸ™‡πŸ™‡πŸ™‡

01.09.2025 11:29 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

🚨It's that exciting time of year!🚨

Our team has got TWO open DPhil (PhD) positions in #datascience + #health here at @oxforddemsci.bsky.social for 2026πŸŽ‰! See for details:

1️⃣ πŸ‘‰ crahal.com/HDS_2026.html
2️⃣ πŸ‘‰ crahal.com/pophealth_2026.html

Please share and help us to find our future teammates ❀️!

01.09.2025 11:29 πŸ‘ 26 πŸ” 17 πŸ’¬ 1 πŸ“Œ 4

πŸ’‘πŸ€–πŸ”₯ @keyonv.bsky.social's talk at metrics-and-models.github.io was brilliant, posing epistemic questions about what Artificial Intelligence "understands".

Next (two weeks): Alexander Vezhnevets talks about a new multi-actor generative agent based model. As usual, *all welcome* #datascience #cssπŸ’‘πŸ€–πŸ”₯

27.08.2025 14:57 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Excited to contribute to this; very exciting stuff by @hggaddy.bsky.social, as usual!

27.08.2025 10:44 πŸ‘ 7 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

i don't know you, but my thought is that i absolutely and entirely agree with you.

21.08.2025 14:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸ’‘πŸ€–πŸ”₯The talk by Juan Carlos Perdomo at metrics-and-models.github.io was so thought provoking that the convenors stayed to discuss it in the room afterwards for quite some time!

Next, we have @keyonv.bsky.social asking: "What are AI's World Models?". Exciting times over here, all welcome!πŸ’‘πŸ€–πŸ”₯

14.08.2025 09:50 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Absolutely delighted to confirm forthcoming talks as part of the series by @bstewart.bsky.social and @andganna.bsky.social! Can't wait!

04.08.2025 11:59 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸ’‘πŸ€–πŸ”₯The talk by @klint.bsky.social at metrics-and-models.github.io was truly brilliant. Important work; a clean/intuitive computational design & empirical application from the @itemrespwarehouse.bsky.social!

*Next:* Juan Carlos Perdomo on "The relative value of prediction" (v. excited about this)πŸ’‘πŸ€–πŸ”₯

04.08.2025 11:59 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 1
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@ramina-sotoudeh.bsky.social gave an AMAZING talk yesterday as part of the #metrics-and-models seminar seriesπŸ‘. Next (30.07), we have @klint.bsky.social on "Reproducing Expert Judgement with Shortened Surveys using Simulated Annealing"πŸ”₯! See website for more; metrics-and-models.github.io!

17.07.2025 12:06 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

The first #metrics-and-models talk was fantasticπŸ€—!

Next: @ramina-sotoudeh.bsky.social on "Antenatal Selection: A novel approach for assessing the genetic and ecological drivers of who survives to birth".

Details: metrics-and-models.github.io
Sign up: metrics_and_models-subscribe@maillist.ox.ac.uk

02.07.2025 14:47 πŸ‘ 10 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1
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Hurrying to post about RobustiPy, i forgot this fun animation i made for teaching purposes (with @deevybee.bsky.social on the SABS R3 CDT) around when we started developing. Specification uncertainty is just _one_ type of uncertainty, though; our forthcoming work looks at the role of random numbers!

30.06.2025 14:45 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Such nice collaborations with @dvaldenegro.bsky.social, @jiani-y.bsky.social & @claireduiyidai.bsky.social .

Possible because of generous contributions from @oxforddemsci.bsky.social / @centreforcare.bsky.social / @nuffieldcollege.bsky.social. Thanks to all for giving comments on it over the years!

30.06.2025 10:41 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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We also think it has some tight #dataviz, too! Here's the canonical `union.dta' dataset examined by other model uncertainty tools. See our paper and website for more examples of how to use the accessible Python app, released under an open source GNU GPL 3.0 license!

30.06.2025 10:41 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Introducing RobustiPy: An efficient next generation multiversal library with model selection, averaging, resampling, and explainable artificial intelligence We present RobustiPy, a next generation Python-based framework for model uncertainty quantification and multiverse analysis, released under the GNU GPL v3.0. Through the integration of efficient boots...

πŸš€ RobustiPy is out of beta! Feature rich, we hope it becomes useful for model uncertainty / #datascience.

We include πŸ”Ÿ replications, including β€œunexplained discrepancies” in prior work!

πŸ“„ Preprint: arxiv.org/abs/2506.19958
πŸ’» GitHub: github.com/RobustiPy/robustipy
🌐 Homepage: robustipy.github.io

30.06.2025 10:41 πŸ‘ 13 πŸ” 7 πŸ’¬ 1 πŸ“Œ 1