Associate Professor of Data Science and Informatics at the University of Oxford.https://bsky.app/profile/crahal.comhttps://bsky.app/profile/crahal.com/post/3mm7tlxuml22tCW: suicide. Honoured to be Guest Editing—with @saurabhkhanna.bsky.social—a Special Issue at ACM-TSC in tribute of my intellectual hero, Aaron Swartz, who died by suicide in 2013 at 26 after extreme prosecutorial overreach. While attempting to expand access to knowledge. CfP: tinyurl.com/4znbk4y2.19 May 2026 16:44 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3mm7tlxuml22thttps://bsky.app/profile/crahal.com/post/3mllvl22vqc2aTwo weeks left until our Call for Papers closes for the 7th International Conference on Social Computing (ICSC'26). Please do submit your papers! Optional conference proceedings, great keynote speakers, nice conference dinner @nuffieldcollege.bsky.social, and more. Details: icsc-conf.github.io!11 May 2026 18:26 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3mllvl22vqc2ahttps://bsky.app/profile/crahal.com/post/3ml2cer3nts2sToday's pushes bring in some speed efficiencies to our new model uncertainty library which make it approximately **14** times faster! Check it out now at robustipy.github.io; accompanying paper getting published very soon, super jazzed 🎷04 May 2026 18:27 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3ml2cer3nts2shttps://bsky.app/profile/crahal.com/post/3mir7z4d4i22wDelighted to be helping chair ICSC '26 🤖. Hosted: @nuffieldcollege.bsky.social 🏰 When: Sept ’26 🕰️ Details: CfP live 🎉 Optional proceedings, all welcome. More: icsc-conf.github.io. Please consider sharing your work📜! Kindly help us spread the word, and follow @i-c-s-c.bsky.social for updates📣!05 Apr 2026 17:00 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3mir7z4d4i22whttps://bsky.app/profile/crahal.com/post/3maqsurbjok2kThe quote of the year came late, but it’s good: “This 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 Dec 2025 17:44 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3maqsurbjok2khttps://bsky.app/profile/crahal.com/post/3m2vm2mafgc2iWe'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! [contains quote post or other embedded content]11 Oct 2025 06:54 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3m2vm2mafgc2ihttps://bsky.app/profile/crahal.com/post/3m25pbamggk2xThrilled to serve as TPC co-chair (/w @chenyang03.bsky.social) for the brilliant International Conference on Social Computing! 🚀 See @i-c-s-c.bsky.social for updates! 📅 Papers: October 20th! 🔗 Full details: icsc-conf.github.io/2025/ Let’s push the frontiers of #CSS, #DataScience, #LLM, and #AI💡✨01 Oct 2025 18:47 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3m25pbamggk2xhttps://bsky.app/profile/crahal.com/post/3lzykzlyt622h🎉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.social29 Sep 2025 17:48 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lzykzlyt622hhttps://bsky.app/profile/crahal.com/post/3lz4dsfpnr222A paper of ours just got rejected from a leading computer science journal for being ‘too technical’ and for some disturbing reason the inner economist in me is really proud.18 Sep 2025 12:24 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lz4dsfpnr222https://bsky.app/profile/crahal.com/post/3ly4mmwktmk24The utility of this data resource cannot be understated. Infinite respect to all of the incredibly talented people who worked on it! 😍 [contains quote post or other embedded content]05 Sep 2025 21:37 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3ly4mmwktmk24https://bsky.app/profile/crahal.com/post/3ly3pgzhspc2i🫂🫂🫂🫂 [contains quote post or other embedded content]05 Sep 2025 12:55 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3ly3pgzhspc2ihttps://bsky.app/profile/crahal.com/post/3lxsbbk6z4c2pThanks 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). [contains quote post or other embedded content]01 Sep 2025 18:47 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lxsbbk6z4c2phttps://bsky.app/profile/crahal.com/post/3lxrirgljik2a🚨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 2026🎉! See for details: 1️⃣ 👉 crahal.com/HDS_2026.html 2️⃣ 👉 crahal.com/pophealth_2026.html Please share and help us to find our future teammates ❤️!01 Sep 2025 11:29 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lxrirgljik2ahttps://bsky.app/profile/crahal.com/post/3lxfc3m4z2c2w💡🤖🔥 @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 #css💡🤖🔥27 Aug 2025 14:57 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lxfc3m4z2c2whttps://bsky.app/profile/crahal.com/post/3lxetwftgkk2dExcited to contribute to this; very exciting stuff by @hggaddy.bsky.social, as usual! [contains quote post or other embedded content]27 Aug 2025 10:44 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lxetwftgkk2dhttps://bsky.app/profile/crahal.com/post/3lwe2uparek2d💡🤖🔥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!💡🤖🔥14 Aug 2025 09:50 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lwe2uparek2dhttps://bsky.app/profile/crahal.com/post/3lvl5ggyny22r💡🤖🔥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)💡🤖🔥04 Aug 2025 11:59 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lvl5ggyny22rhttps://bsky.app/profile/crahal.com/post/3lu5vfrcztk2e@ramina-sotoudeh.bsky.social gave an AMAZING talk yesterday as part of the #metrics-and-models seminar series👏. Next (30.07), we have @klint.bsky.social on "Reproducing Expert Judgement with Shortened Surveys using Simulated Annealing"🔥! See website for more; metrics-and-models.github.io!17 Jul 2025 12:06 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lu5vfrcztk2ehttps://bsky.app/profile/crahal.com/post/3lsyhezbpt22oThe first #metrics-and-models talk was fantastic🤗! 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.uk02 Jul 2025 14:47 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lsyhezbpt22ohttps://bsky.app/profile/crahal.com/post/3lstgeegyjs2oHurrying 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 Jun 2025 14:45 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lstgeegyjs2ohttps://bsky.app/profile/crahal.com/post/3lssyq6y37s2q🚀 RobustiPy is out of beta! Feature rich, we hope it becomes useful for model uncertainty / #datascience. We include 🔟 replications, including “unexplained discrepancies” in prior work! 📄 Preprint: arxiv.org/abs/2506.19958 💻 GitHub: github.com/RobustiPy/robustipy 🌐 Homepage: robustipy.github.io https://arxiv.org/abs/2506.1995830 Jun 2025 10:41 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lssyq6y37s2qhttps://bsky.app/profile/crahal.com/post/3lrbhahcjk222🔥Coming July 2: 'Metrics and Models'!🔥 A new seminar series on advanced modelling w/ impact across health/society. 🌍 Open to *ALL*! 🕑 Weds 2pm UK alternating weeks (online) 🔗 metrics-and-models.github.io 📬 metrics_and_models-subscribe@maillist.ox.ac.uk Brilliant speakers. *Please share*!10 Jun 2025 17:48 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lrbhahcjk222https://bsky.app/profile/crahal.com/post/3lpakxgqqpc2s“it’s quite heavy on the statistical analysis” is probably one of the nicest inadvertent compliments a politician could ever give to a data scientist. Thank you kindly, @wendychambld.bsky.social! [contains quote post or other embedded content]15 May 2025 22:31 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lpakxgqqpc2shttps://bsky.app/profile/crahal.com/post/3lmjyjzojyc2sOne of the world's great books now accompanied by one of the world's great programming languages ♥️. Can't wait to read this. [contains quote post or other embedded content]11 Apr 2025 12:13 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lmjyjzojyc2shttps://bsky.app/profile/crahal.com/post/3lmc7h7rbvc2nJust moved to @zed.dev as my go-to text editor. Blazing fast with minimum latency (of any sort), so extremely feature rich, immensely beautiful, and clearly an IDE made by people who know what developers want and need. I absolutely love it; highly recommended!08 Apr 2025 09:55 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lmc7h7rbvc2nhttps://bsky.app/profile/crahal.com/post/3llekxw2l5k261/5 📄✨ITS FINALLY HERE!📄✨. After _five_ years, our new model evaluation metric — The InterModel Vigorish (IMV) — is now published (@plosone.org). Paper: bit.ly/3RlqrQH Preprint: bit.ly/41LzGjm Code: github.com/intermodelvigorish ‘What’s the vig on this action?’ (bit.ly/4hPoZ3Z). ⬇️⬇️⬇️27 Mar 2025 15:01 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3llekxw2l5k26https://bsky.app/profile/crahal.com/post/3lkgvteedps2c🎉🚀🔬Our new model uncertainty library -- RobustiPy -- now also has joint inference tests (as per @urisohn.bsky.social et al., 2019, NHB). Near to release/preprint! GitHub: github.com/RobustiPy/robustipy project website: robustipy.github.io/ /w @dvaldenegro.bsky.social & @jiani-y.bsky.social!🎉🚀🔬15 Mar 2025 19:56 +0000at://did:plc:3eqqhalroalwrnikhbwqtgki/app.bsky.feed.post/3lkgvteedps2c