Adam Johansen
Professor of Statistics at University of Warwick; computational methods, Monte Carlo, gradient flows and fun things like those.
- Congratulations to Jenning Lim on a successful defence of his thesis, "Particle Algorithms for Inference of Probabilistic Models" today, a well deserved success! And thanks to @chris-nemeth.bsky.social and Theo Damoulas for acting as examiners.
- Congratulations to Fernando Zepeda on their viva today at @warwickstats.bsky.social; I spent a very enjoyable afternoon with @louisaslett.bsky.social discussing Fernando's thesis, "Non-Reversible Extensions of the ALPS Methodology for Multimodal and Transdimensional Sampling".
- Reposted by Adam Johansen🔥 WANTED: Student Researcher to join me, @vdebortoli.bsky.social, Jiaxin Shi, Kevin Li and @arthurgretton.bsky.social in DeepMind London. You'll be working on Multimodal Diffusions for science. Apply here google.com/about/career...
- Two assistant prof. vacancies at Warwick Statistics: warwick-careers.tal.net/vx/appcentre... (deadline 25 January 2025 at 11:55pm). CSML applications very welcome!
- Reposted by Adam JohansenDr. Shishen Lin has joined us as a Research Fellow on the ERC Synergy OCEAN project from September. His research is in learning in games, black-box optimisation and evolutionary algorithms. He is also interested in reinforcement learning and its combination with evolutionary computation methods.
- Reposted by Adam JohansenPostdoc, Newcastle University (UK). PINCODE researches Monte Carlo Fusion methods: this postdoc will help developing #rstats packages that bring this methodological work to life, as well as opportunities to contribute to further methodological development. www.jobs.ac.uk/job/DOZ807/r...
- Reposted by Adam JohansenThe Annual General Meeting (AGM) of the RSS CSML will take place on 2 December, 12:00–13:00 (UK time) via Zoom. The meeting is open to all and will review the section’s activities from the past year, outline plans for the year ahead, and present the committee for 2026.
- Reposted by Adam JohansenApplications are invited for Chapman Fellow in Mathematics (Statistics Section) at the Department of Mathematics. Closing date: 11 November 2025 www.imperial.ac.uk/jobs//search...
- Reposted by Adam JohansenThinking about doing a PhD in statistics, probability or mathematical finance? Want to learn more about doctoral training at Warwick Statistics? Register now for our upcoming PhD Open Days. Find more information and book your place here: warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenWe are hiring! We are inviting applications for the Chapman Fellowship in Statistics at Imperial College London. This is a kind of super-postdoc: 3 years contract, excellent working conditions, and candidates are expected to propose an independent research plan. www.imperial.ac.uk/jobs//search...
- Congratulations to Rocco Caprio -- thesis defended, minor corrections done and graduation imminent. Thanks to Gareth Roberts and Andrew Duncan for examining the thesis. Rocco is now a Prob-AI-funded research fellow warwick.ac.uk/fac/sci/stat... and I look forward to seeing what comes next.
- There are a couple of vacancies in Wollongong for Maths/Stats lecturers: www.uow.edu.au/about/jobs/j...
- Reposted by Adam JohansenSome fun news: We're hiring! Lectureship (analogous to Assistant Prof.) in Statistical Science and AI, in the School of Mathematics, University of Bristol. Closing date 13 October 2025; link below! www.bristol.ac.uk/jobs/find/de...
- Reposted by Adam JohansenRcppSMC 0.2.9 on CRAN: Maintenance Sequential Monte Carlo / Particle Filters for R dirk.eddelbuettel.com/blog/2025/09... #rstats #rcpp
- Reposted by Adam JohansenAn announcement, which might be of some interest: In the period 2022-2024, myself and a number of other postdocs on the "CoSInES" and "Bayes4Health" EPSRC grants were involved in organising a number of internal tutorial workshops, on topics relevant to researchers in computational statistics.
- As evidence that this prediction wasn't too bad, [https://academic.oup.com/biomet/advance-article/doi/10.1093/biomet/asaf061/8223075](Rocco's second paper), showing the fast convergence of the venerable EM algorithm using a rather fun functional analysis argument, is in press for Biometrika.
- Rocco explains this work, among other things, about 90 minutes in to the [https://www.youtube.com/watch?v=QrPy49eAe9o](recording of the recent RSS Workshop of Gradient Flows).
- Applications are still open for another two weeks.
- If anyone is, or knows anyone who is, looking for a postdoc position to work on the foundations of scalable inference and such... applications for a postdoctoral position at Warwick as a part of the OCEAN project (oceanerc.com) are open until 20th August at warwick-careers.tal.net/vx/appcentre....
- If anyone is, or knows anyone who is, looking for a postdoc position to work on the foundations of scalable inference and such... applications for a postdoctoral position at Warwick as a part of the OCEAN project (oceanerc.com) are open until 20th August at warwick-careers.tal.net/vx/appcentre....
- Reposted by Adam JohansenNew work on inference for partially observed (hypoelliptic) SDEs in frequentist/Bayesian regimes. Splitting schemes & controlled SMC (+ bridges) to recover the (pseudo)likelihood of interest arxiv.org/abs/2507.14535 Work led by Shu, with @adamjohansen.bsky.social and @bayesianstats.bsky.social
- Reposted by Adam JohansenSecond blog post about nested sampling: numerical experiments statisfaction-blog.github.io/posts/30-06-2025-ne…
- Reposted by Adam JohansenShunichi Amari has been awarded the 40th (2025) Kyoto Prize in recognition of his pioneering research in the fields of artificial neural networks, machine learning, and information geometry www.riken.jp/pr/news/2025...
- Reposted by Adam JohansenWe are recruiting! A three-year postdoctoral position at Warwick as part of the “Probabilistic Artificial Intelligence” hub on the mathematical foundations of AI. Further details at the link: warwick-careers.tal....
- Reposted by Adam Johansen🥳 Congratulations are in order for: our newly promoted professors FX Robin Paul Terry as well as for our newly promoted Associated Professors Tom H Alex D Takoua Emma Brieuc
- Reposted by Adam Johansen[Not loaded yet]
- I'm sure this will be the first of many.
- Congratulations to PhD student Rocco Caprio on the acceptance of his first paper, "Error bounds for particle gradient descent, and extensions of the log-Sobolev and Talagrand inequalities" arxiv.org/abs/2403.0..., on functional inequalities and algorithm convergence - it will appear in JMLR.
- Reposted by Adam Johansen🚨 New paper: “Towards Adaptive Self-Normalized IS”, @ IEEE Statistical Signal Processing Workshop. TLDR; To estimate µ = E_p[f(θ)] with SNIS, instead of doing MCMC on p(θ) or learning a parametric q(θ), we try MCMC directly on p(θ)| f(θ)-µ | (variance-minimizing proposal). arxiv.org/abs/2505.00372
- Reposted by Adam JohansenAnnouncing our 2025/26 William Guy Lecturers 📢 Focusing on "Statistics and AI," these talks will inspire students about the role of statistics in our tech-driven world. 🔗 Read more: rss.org.uk/news-publica...
- Reposted by Adam JohansenTim Y. J. Wang, Juan Kuntz, O. Deniz Akyildiz Training Latent Diffusion Models with Interacting Particle Algorithms arxiv.org/abs/2505.12412
- If anyone missed the RSS Gradient Flow workshop back in March, videos are now available...
- Late - but better than never.... www.youtube.com/watch?v=QrPy...
- Reposted by Adam JohansenApplications are still open for our MSc in Statistics. In case you have any questions, we have a Live Chat this Friday (16th May). To register join here: meetandengage.com/un... For more information, see warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenRcppSMC 0.2.8 on CRAN: Maintenance Sequential Monte Carlo / Particle Filters for R dirk.eddelbuettel.com/blog/2025/05... #rcpp #rstats
- Reposted by Adam Johansen🗣️ Just 2 weeks until the CRiSM 2.0 - Conference 2025 here at the Warwick Statistics. We can’t wait to welcome you from Wednesday 21st – Friday 23rd May 2025. If you haven’t already, register for the three-day conference event now (deadline today - 8th May!) 🔗 tinyurl.com/2d2b9b7a
- Reposted by Adam JohansenThe BayesComp workshop on 'Bayesian Computation and Inference with Misspecified Models' will take place in Singapore on the 16-17th June. We have an open call for posters/contributed calls, with a deadline on the 1st May. More details on the website: postbayes.github.io/BayesMisspec...
- Warwick's Statistics department has recently come by funding for a few additional PhD scholarships for the coming year; details of funding still available are at warwick.ac.uk/fac/sci/stat... if anyone is in the market for a PhD position starting in October 2025.
- Reposted by Adam JohansenOur next Discussion Meeting will focus on our journal paper exploring the statistical aspects of the Covid-19 response We caught up with co-author Simon Wood on the paper and what he'll discuss at next month's meeting rss.org.uk/news-publica... Register to attend here ⬇️ rss.org.uk/training-eve...
- I just enjoyed Elsiddig Awadelkraim's thesis defence. Aside from the substantial technical interest, it was interesting to see the KAUST approach to the viva for the first time.
- The thesis was based around four substantial chapters of novel material: three on unbiased/multilevel methods, arxiv.org/abs/2309.10589, arxiv.org/abs/2404.15606 and arxiv.org/abs/2411.11270, and one on a lagged Feynman-Kac estimator: arxiv.org/abs/2407.15494.
- Reposted by Adam Johansen*G-Research Warwick PhD Scholarship* In 2025, one scholarship funded by a generous donation from G-Research (www.gresearch.com/) will be awarded to an outstanding student undertaking a PhD within the Department of Statistics – Apply now. warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenNicolas Chopin will speak at our CRiSM colloquium *today* at 11am. NIcolas will speak on "Saddlepoint Monte Carlo and its Application to Exact Ecological Inference". For the benefit of people on campus who may be able to attend, the talk will be in MS.02, followed by lunch. warwick.ac.uk/fac/sc...
- 3 year PDRA position as part of the OCEAN project (www.oceanerc.com) to work with Gareth Roberts, myself and other OCEAN Researchers on a range of topics around scalable distributed computation. Details at warwick-careers.tal.net/vx/appcentre...; please share with anyone who might be interested.
- The position is based at Warwick and the deadline for applications is Thursday 10th April 2025 at 11.55pm (in the UK).
- Reposted by Adam JohansenI will be one of the supervisors on this. Please pass on to any UK students who may be interested.
- It's a pleasure to report that arxiv.org/abs/1805.03924 has been accepted by JRSSB. Rob and Leah, in particular, have done a huge amount of work on this and it's nice to see it reach a conclusion! It makes explicit connections between nested sampling and SMC and shows how they can be exploited.
- This afternoon I was privileged to examine Alex Glyn-Davies, who produced a great thesis on aspects of physics-informed inference for DE models (arxiv.org/abs/2209.15609, arxiv.org/abs/2409.07101 and arxiv.org/abs/2409.06560) and some anomaly detection for good measure doi.org/10.1016/j.pa....
- Reposted by Adam JohansenJOB OPENING at University of Bristol: -- Lecturer in Statistics or Machine Learning -- (x 2 positions available) -- application deadline: 31 March, 2025 Details at www.bristol.ac.uk/jobs/find/de... Come join us!
- The @royalstatsoc.bsky.social William Guy Lectureship this year has a "statistics and AI" focus, and may be of interest to some in our community.
- Our prestigious William Guy Lectureship is now open for applications! Could you be one of our inspiring stats communicators? This year we will be exploring the increasing importance of stats and AI in young people's lives 💻 rss.org.uk/news-publica...
- If anyone is thinking of registering for this, I understand that there are still some spaces available, but the room this event is taking place in has a limited capacity which is likely to be reached... so to avoid disappointment it would be safer to register sooner rather than later ;-).
- Registration is now open for the 2nd RSS/Turing Workshop on Gradient Flows for Sampling, Inference, and Learning at rss.org.uk/training-eve.... Date: Monday 24 March 2025, 10.00AM - 5.00PM Location: The Alan Turing Institute
- Reposted by Adam JohansenWe are excited to have Prof. Nicolas Chopin (ENSAE, Institut Polytechnique de Paris) presenting at the CRiSM colloquium next month. Nicolas will speak on "Saddlepoint Monte Carlo and its Application to Exact Ecological Inference" warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenA co-author (and friend!) is hiring his first post doc in Linköping University, Sweden. It seems the application deadline is not settled yet, so you have *plenty of time* to c̶o̶n̶s̶i̶d̶e̶r̶ applyi̶n̶g̶ ! The department is strong and so is he. zz.zabemon.com/blogs/2025/0...
- Registration is now open for the 2nd RSS/Turing Workshop on Gradient Flows for Sampling, Inference, and Learning at rss.org.uk/training-eve.... Date: Monday 24 March 2025, 10.00AM - 5.00PM Location: The Alan Turing Institute
- Speakers are: Sahani Patiraja (UNSW Sydney) Rocco Caprio (University of Warwick) Anna Korba (ENSAE/CREST) Paula Cordero Encinar (Imperial College London) Arthur Gretton (University College London/DeepMind) Jonas Latz (University of Manchester)
- I'm really looking forward to the CRiSM 2.0 Conference warwick.ac.uk/fac/sci/stat... from 21st-23rd May. We've been lucky enough to get a really nice list of speakers; registrations open now if anyone is in the market for some interesting talks in May.
- Reposted by Adam JohansenJeremias Knoblauch and other colleagues and friends in UCL launched a "Post-Bayes seminar series". Their will be many blocks of talks, including a series on PAC-Bayes (probably starting in September 2025). The first talk (by Jeremias) is next week. Please have a look: postbayes.github.io/seminar/
- The new RSS open access journal on Data Science and Artificial Intelligence is now accepting submissions: rss.org.uk/news-publica...
- Reposted by Adam JohansenA highlight of the week was having the visit of Rocco Caprio, from the University of Warwick, who gave an excellent talk on "Fast convergence of the EM algorithm under a log-Sobolev inequality" 👍 #Manchester Centre for (AI Fun)damentals Here is a nice memory of the talk 👇
- Reposted by Adam JohansenOur MSc in Statistics now has a Data Science Pathway! Students on this Pathway integrate statistical theory with cutting-edge applications in AI, machine learning, and health analytics. Find out more at warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenThe Statistics Pathway on Warwick's MSc in Statistics offers a comprehensive foundation in statistical theory and applications, while the specialised routes allow you to focus on areas that align with your career or research aspirations. Find out more at warwick.ac.uk/fac/sc...
- Reposted by Adam Johansen📢 Maths & Stats students of all levels from all over the world are invited to attend and/or present at the International Mathematics and Statistics Student Research Symposium (IMSSRS) 2025. A virtual free conference on Saturday, April 12th 2025. 👉 sites.google.com/view/imssrs/...
- Reposted by Adam JohansenWe are holding a conference to mark the relaunch of CRiSM with its expanded scope and growing activities. The aim is to bring together a broad audience with interests across CRiSM's remit, covering theoretical & applied statistics, machine learning, probability, and mathematical finance.
- Reposted by Adam JohansenSneak preview of upcoming package: Need N(0,1) random draws seven times faster than base #Rstats [^1] ? Exponential and uniform too? Then consider `zigg`, a fresh zero-dependency reimplementation of Ziggurat. More at github.com/eddelbuettel... [1] on my machine ...
- Reposted by Adam JohansenReminder about these positions - DL tomorrow (8 Jan).
- Reposted by Adam JohansenApply now for our MSc in Statistics! From 2025 entry, we've introduced an innovative structure, offering a choice between a broad Statistics MSc or specialised pathways in Data Science, Finance, and Probability. For more detail, see warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenOne #postdoc position is still available at the National University of Singapore (NUS) to work on sampling, high-dimensional data-assimilation, and diffusion/flow models. Applications are open until the end of January. Details: alexxthiery.github.io/jobs/2024_di...
- Reposted by Adam JohansenThe slides of my NeurIPS lecture "From Diffusion Models to Schrödinger Bridges - Generative Modeling meets Optimal Transport" can be found here drive.google.com/file/d/1eLa3...
- Reposted by Adam JohansenThis term we welcomed Filippo Pagani to the Department. Filippo is part of the OCEAN project and his research is about Markov chain Monte Carlo, variational inference, and federated inference. oceanerc.com
- Reposted by Adam Johansen🌸 Applications for the STATML x Bocconi Spring School are open! 📝 📖 Computational Optimal Transport & Statistical Learning with Missing Values 🗣️ Speakers: Gabriel Peyré & Julie Josse 🗓️ 7 - 11 April '25 📍Cumberland Lodge, UK 💸Cost inclds. accommodation & meals 🔗 statml.io/index.php/st...
- Reposted by Adam JohansenCall for Help: As AE for JSS, I am looking for reviewers for a neat paper (and #Rstats package) with low/mid/high precision float support, something of interest for (very) large models and machine learning. If you,dear reader, could review this please get in touch via email. Thanks in advance.
- Reposted by Adam JohansenWe're launching a new PhD programme in Mathematical AI at Lancaster University. If you know anyone who might be interested, then please pass this along.
- Reposted by Adam JohansenA recording of a mini-course (2 hrs with a small break in the middle) which I gave earlier this week. My intentions were to convey some good intuition, show some explicit examples and calculations, give plenty of references with which to go on, as well as to tell a few pretty silly jokes.
- Recent Warwick graduate Chatchuea Kimchaiwong has recently arxived a report, arxiv.org/html/2411.18..., written with Jeremie Houssineau and myself, introducing his possibility-theory based reformulation of the ensemble Kalman filter. Whilst computationally costly, it demonstrates good robustness.
- Reposted by Adam JohansenAn exciting opportunity to work on probabilistic AI. We are a broad church at Warwick, so don't rule yourself out without reading the full description below.
- Reposted by Adam JohansenApplications for our Summer Research Experience in 2025 are open! If you are in the penultimate year of your undergraduate degree (or later, including MSc), you can apply to do a research project with us in over the summer. Apply here by 19th January: warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenApplications are now open for the Warwick Centre for Doctoral Training in Statistics. Follow the links below to apply, or to register for our open day on Wednesday. warwick.ac.uk/fac/sc... warwick.ac.uk/fac/sc...
- Reposted by Adam JohansenJoin us! We are currently advertising two faculty positions: Assistant Professor (Computational, Methodological or Theoretical Statistics or Machine Learning) and Assistant Professor (Mathematical Finance). www.warwick.ac.uk/st... Deadline: Jan 6th
