Archive for Institut Henri Poincaré

what a party!

Posted in pictures, Statistics, Travel, University life, Wines with tags , , , , , , , , , , , , , , on September 13, 2021 by xi'an

We ended up having a terrific b’day party last Thursday after noon, with about 30 friends listening in Institut Henri Poincaré to Florence, Pierre, and Sylvia giving lectures on my favourite themes, namely ABC, MCMC, and mixture inference. Incl. subtle allusions to my many idiosyncrasies in three different flavours!  And a limited number of anecdotes, incl. the unavoidable Cancún glasses disaster! We later headed to a small Ethiopian restaurant located on the other side of the Panthéon, rue de l’Ecole Polytechnique (rather than on the nearby rue Laplace!), which was going to be too tiny for us, especially in these COVID times, until the sky cleared up and the restaurant set enough tables in the small street to enjoy their injeras and wots till almost midnight. The most exciting episode of the evening came when someone tried to steal some of our bags that had been stored in a back room and when Tony spotted the outlier and chased him till the thief dropped the bags..! Thanks to Tony for saving the evening and our computers!!! To Éric, Jean-Michel and Judith for organising this 9/9 event (after twisting my arm just a wee bit). And to all my friends who joined the party, some from far away…

B’day party!

Posted in Kids, Statistics, Travel, University life with tags , , , , , on August 30, 2021 by xi'an

Cauchy’s head [jatp]

Posted in pictures, University life with tags , , , , , , , , , , , on August 1, 2021 by xi'an

maison Poincaré

Posted in Travel, University life with tags , , , , , , , , on November 15, 2020 by xi'an

séminaire P de S

Posted in Books, pictures, Statistics, University life with tags , , , , , , , , , on February 18, 2020 by xi'an

As I was in Paris and free for the occasion (!), I attended the Paris Statistics seminar this afternoon, in the Latin Quarter. With a first talk by Kweku Abraham on Bayesian inverse problems set a prior on the quantity of interest, γ, rather than its transform G(γ), observed with noise. Always perturbed by the juggling of different distances, like L² versus Kullback-Leibler, in non-parametric frameworks. Reminding me of probabilistic numerics, at least in the framework, since the crux of the talk was 100% about convergence. And a second talk by Leanaïc Chizat on convex neural networks corresponding to an infinite number of neurons, with surprising properties, including implicit bias. And a third talk by Anne Sabourin on PCA for extremes. Which assumed very little on the model but more on the geometry of the distribution, like extremes being concentrated on a subspace. As I was rather tired from an intense week at Warwick, and after a weekend of reading grant applications and Biometrika submissions (!), my foggy brain kept switching to these proposals, trying to make connections with the talks, not completely inappropriately in two cases out of three. (I am afraid the same may happen tomorrow at our probability seminar on computer-based proofs!)

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