Archive for Lapland

call for posters at BayesComp²³ satellite [AG:DC]

Posted in Mountains, pictures, Statistics, Travel, University life with tags , , , , , , , , , on November 22, 2022 by xi'an

An urgent reminder that the early bird deadline for BayesComp²³ and the different satellites is 30 November (with a difference of $50) and also a call for poster presentations at our AG:DC (aka, Bayesian computing without exact likelihood) satellite workshop. Poster spots will be attributed to presenters on a first come – first served basis, so do not delay in sending me an abstract at my gmail account bayesianstatistics

Contributions to BayesComp 23

Posted in Mountains, pictures, Statistics, Travel, University life with tags , , , , , , , , on September 27, 2022 by xi'an

Last call for contributed sessions at BayesComp 2023, 15-17 March, Levi, Finland.  Thanks to an increase in the conference rooms, a few more sessions remain available for submission. This edition of BayesComp promises to be the largest ever!!!

invited sessions at BayesComp [submissions open]

Posted in Mountains, pictures, Statistics, Travel, University life with tags , , , , , , , on July 8, 2022 by xi'an

The call for invited sessions at BayesComp 2022 is now open, submission can be done via Google Form. Submissions are due by August 7. If you have any questions, please email to bayescomp2023 on Gmail. And if you want to contribute to AG::DC, please email Anto, Heikki or me!

Bayes Comp 2023

Posted in Mountains, Statistics, Travel, University life with tags , , , , , , , , , , on November 23, 2021 by xi'an

The official website for Bayes Comp 2023, taking place in Levi, Northern Finland, 15-17 March 2023, is on! And it’s beautiful.

IMS workshop [day 3]

Posted in pictures, R, Statistics, Travel, University life with tags , , , , , , , , , , , , , , , , , , , on August 30, 2018 by xi'an

I made the “capital” mistake of walking across the entire NUS campus this morning, which is quite green and pretty, but which almost enjoys an additional dimension brought by such an intense humidity that one feels having to get around this humidity!, a feature I have managed to completely erase from my memory of my previous visit there. Anyway, nothing of any relevance. oNE talk in the morning was by Markus Eisenbach on tools used by physicists to speed up Monte Carlo methods, like the Wang-Landau flat histogram, towards computing the partition function, or the distribution of the energy levels, definitely addressing issues close to my interest, but somewhat beyond my reach for using a different language and stress, as often in physics. (I mean, as often in physics talks I attend.) An idea that came out clear to me was to bypass a (flat) histogram target and aim directly at a constant slope cdf for the energy levels. (But got scared away by the Fourier transforms!)

Lawrence Murray then discussed some features of the Birch probabilistic programming language he is currently developing, especially a fairly fascinating concept of delayed sampling, which connects with locally-optimal proposals and Rao Blackwellisation. Which I plan to get back to later [and hopefully sooner than later!].

In the afternoon, Maria de Iorio gave a talk about the construction of nonparametric priors that create dependence between a sequence of functions, a notion I had not thought of before, with an array of possibilities when using the stick breaking construction of Dirichlet processes.

And Christophe Andrieu gave a very smooth and helpful entry to partly deterministic Markov processes (PDMP) in preparation for talks he is giving next week for the continuation of the workshop at IMS. Starting with the guided random walk of Gustafson (1998), which extended a bit later into the non-reversible paper of Diaconis, Holmes, and Neal (2000). Although I had a vague idea of the contents of these papers, the role of the velocity ν became much clearer. And premonitory of the advances made by the more recent PDMP proposals. There is obviously a continuation with the equally pedagogical talk Christophe gave at MCqMC in Rennes two months [and half the globe] ago,  but the focus being somewhat different, it really felt like a new talk [my short term memory may also play some role in this feeling!, as I now remember the discussion of Hilderbrand (2002) for non-reversible processes]. An introduction to the topic I would recommend to anyone interested in this new branch of Monte Carlo simulation! To be followed by the most recently arXived hypocoercivity paper by Christophe and co-authors.

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