Archive for poster session

ISBA 20.2.21

Posted in Kids, Mountains, pictures, Running, Statistics, Travel, University life, Wines with tags , , , , , , , , , , , , , , , , , , , , , , , , , , , on June 30, 2021 by xi'an

A second day which started earlier and more smoothly with a 100% local j-ISBA session. (Not counting the invigorating swim in Morgiou!) With talks by junior researchers from master to postdoc level, as this ISBA mirror meeting was primarily designed for them, so that they could all present their work, towards gaining more visibility for their research and facilitating more interactions with the participants. CIRM also insisted on this aspect of the workshop, which was well-attended.

I alas had to skip the poster session [and the joys of gather.town] despite skipping lunch [BND], due to organisational constraints. Then attended the Approximate Bayesian computation section, including one talk by Geoff Nicholls on confidence estimation for ABC, following upon the talk given by Kate last evening. And one by Florian Maire on learning the bound in accept-reject algorithms on the go, as in Caffo et al. (2002), which I found quite exciting and opening new possibilities, esp. if the Markov chain thus produced can be recycled towards unbiasedness without getting the constant right! For instance, by Rao-Blackwellisation, multiple mixtures, black box importance sampling, whatever. (This also reminded me of the earlier Goffinet et al. 1996.)

Followed by another Bayesian (modeling and) computation session. With my old friend Peter Müller talking about mixture inference with dependent priors (and a saturated colour scheme!), Matteo Ruggieri [who could not make it to CIRM!] on computable Bayesian inference for HMMs. Providing an impressive improvement upon particle filters for approximating the evidence. Also bringing the most realistic Chinese restaurant with conveyor belt! And Ming Yuan Zhou using optimal transport to define distance between distributions. With two different conditional distributions depending on which marginal is first fixed. And a connection with GANs (of course!).

And it was great to watch and listen to my friend Alicia Carriquiry talking on forensic statistics and the case for (or not?!) Bayes factors. And remembering Dennis Lindley. And my friend Jim Berger on frequentism versus Bayes! Consistency seems innocuous as most Bayes procedures are. Empirical coverage is another kind of consistency, isn’t it?

A remark I made when re-typing the program for CIRM is that there are surprisingly few talks about COVID-19 overall, maybe due to the program being mostly set for ISBA 2020 in Kunming. Maybe because we are more cautious than the competition…?!

And, at last, despite a higher density of boars around the CIRM facilities, no one got hurt yesterday! Unless one counts the impact of the French defeat at the Euro 2021 on the football fans here…

practical details on ISBA²⁰²¹

Posted in Statistics, University life with tags , , , , , , , , on May 31, 2021 by xi'an

Remember that the [online]  ISBA 2021 conference will be a mixture of live talks, pre-recorded talks, and posters. All live-streaming will be via Zoom, with links integrated into the Whova platform.

  1. Plenary talks (i.e., Foundational Lectures, Keynote Lectures, and Named Lectures) and all invited talks will be live-streamed during the corresponding sessions.
  2. Contributed talks are prerecorded (available from June 10, 2021). During the live-streamed Contributed Sessions, each speaker will give a 5-min live recap of their contributed talk,  highlighting the main points, followed by live discussion and Q&A from the audience.
  3. Contributed speakers who had optionally chosen to accompany their talk with a poster will present the poster [live] in their designated Poster Sessions. All Poster Sessions will be held on Gather.town, which will also serve as the virtual space for social times during the whole conference.
  4. One week before the conference, Gather.town will go live and all posters will also become available then.
  5. Speakers of all talk types will have the option to upload and post their slides on Whova starting one week before the conference [which I personally recommend as I find it too easy for my attention to drift off during an online and need to recheck earlier slides to reconnect!]

ISB@CIRM: through the looking glass

Posted in Mountains, pictures, Running, Statistics, Travel, University life with tags , , , , , , , , , , , , on May 10, 2021 by xi'an

It’s now official!, thanks to the support of the Société Mathématique de France (SMF), the Centre National de la Recherche Scientifique (CNRS), and the Université Aix-Marseille, we are going to have a mirror workshop at CIRM, Marseille (France, not South Africa or Ohio!) gathering local Bayesians to attend ISBA 2021 together over the week of 28 June – 2 July, and share more than a virtual meeting room, while increasing the motivation to attend all sessions over a five day ultra-marathon! We also hope to have outdoor poster sessions around breaks.There is no registration fee and no support either, the only cost being the full-board on-site accommodation at CIRM to be paid upon arrival. Registration is open. Until we reach the upper limit set by the centre and depending on the dynamics of the pandemic (and of the administration). So feel free to apply if you are reasonably confident to be allowed and able to reach CIRM on the week of 28 June – 2 July. Which means travelling within the EU, at best.

[o-l] ISBA 2021 [百花齊放,百家爭鳴]

Posted in pictures, Statistics, Travel, University life with tags , , , , , , , , , , , , , , on January 20, 2021 by xi'an

As usual, when looking for our ISBA World conference, ISBA [now] 2021, many alternative realities emerge, ISBA being such a popular acronym! The actual dates for the (true and only) ISBA 2021 conference are 28 June – 02 July and the location is no longer Kunming, China, since there is a pandemic going on!!! The conference is now on-line, which forces a complete rethinking of its organisation, away from a sheer replica on Zoom of the traditional conference. And with no registration fees!! I have agreed to join other ISBA members to contribute (with limited abilities) to this switch and obviously welcome comments towards it! Having greatly learned from the earlier experience with the One World Bernoulli+IMS conference last summer, thanks to the dedication and imagination of Leif Döring!, here are some line of thought:

  • Keep in mind days are 24 hours long and attention span much smaller, towards keeping the offer manageable for a fully engaged participant
  • Account and take advantage of the multiple time zones available to virtual participants to stretch the schedule to cover as many participants as possible, with a potential multiplication of (plenary) talks and posters
  • Avoid filling the on-line schedule with live talks but have them pre-registered, possibly with several levels of length and depth, including a one-slide two-minute version
  • Exploit on-line abilities to focus solely (?) on interactions, which is the main point of conferences, meaning participants joining for a thematic session over a reasonable duration to discuss talks or posters they had attended on their own before, with a catalyst leading the show with prepared questions
  • Preregister poster presentations as well, so that live poster sessions involve only questions and discussions, and group poster by theme (an attempt of mine at the earlier ISBA conferences) so that presenters and visitors can interact at the theme level rather than being stuck in an empty room with one’s poster
  • Create local mirrors when people could physically (safely!) gather to attend the conference, from watching videos and poster together to engage into a local plus virtual discussion during interaction sessions. I certainly plan to hold one such session in Paris [if there and not in Eindhoven on 28 June – 02 July]
  • Find ways to engage participants to fully commit to the conference (see above), for instance by preparing a “I am away at ISBA 2021” card one could post on whatever social or asocial networks one favours (but maybe not as one’s vacation email automated reply, unless the card is a few bytes…)

BayesComp 2020 at a glance

Posted in Statistics, Travel, University life with tags , , , , , , , , , , , , , , , , on December 18, 2019 by xi'an