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OWAB [season] I

Posted in Statistics, University life with tags , , , , , , , , , , , , , , , , , , on October 28, 2024 by xi'an

OWABC is dead, long life OWABI! After 5 seasons of the One World Approximate Bayesian Computation (ABC) Seminar, launched in April 2020 (!) to gather members and disseminate results and innovation during those weeks and months under lockdown, the organisers (incl. yours truly) have now decided to launch a “new” seminar series, the One World Approximate Bayesian Inference (OWABI) Seminar, to better reflect the broader interest and scope of this series, which goes beyond ABC. With Bluesky, X, and Linkedin accountsWith Bluesky, X, and Linkedin accounts. In particular, simulation-based inference and ML related techniques will play a crucial role. We are also pleased to announce that Stefan Radev has joined the OWABI Organiser Team.

The first OWABI talk will be given on Thursday the 31st October at 11am UK time. The speaker is Ullrich Koethe (University of Heidelberg), who will talk about

“Free-form flows for physics-informed generative modeling”

Abstract: The talk first introduces a useful categorization of the (sometimes confusing) “generative model zoo” in terms of different change-of-variables formulas. It then shows how normalizing flows, a major architecture for generative neural networks, can be used for simulation-based Bayesian inference in the sciences. Finally, it proposes free-form flows to simplify the incorporation of physical prior knowledge, e.g. rotation and translation invariance or the restriction of the distribution to a manifold, into generative models.
Keywords: normalizing flows; physical-informed neural networks; simulation-based inference

[de]quarantined by slideshare

Posted in Books, pictures, Statistics, University life with tags , , , , , , , , , , , , , , , , on January 11, 2021 by xi'an

A follow-up episode to the SlideShare m’a tuer [sic] saga: After the 20 November closure of my xianblog account and my request for an explanation, I was told by Linkedin that a complaint has been made about one of my talks for violation of copyright. Most surprisingly, at least at first, it was about the slides for the graduate lectures I gave ten years ago at CREST on (re)reading Jaynes’ Probability Theory. While the slides contain a lot of short quotes from the Logic of Science, somewhat necessarily since I discuss the said book, there are also many quotes from Jeffreys’ Theory of Probability and “t’is but a scratch” on the contents of this lengthy book… Plus, the pdf file appears to be accessible on several sites, including one with an INRIA domain. Since I had to fill a “Counter-Notice of Copyright Infringement” to unlock the rest of the depository, I just hope no legal action is going to be taken about this lecture. But I remain puzzled at the reasoning behind the complaint, unwilling to blame radical Jaynesians for it! As an aside, here are the registered 736 views of the slides for the past year: