Archive for conference

big data, big models, it is a big deal! [posters & talks]

Posted in Books, Kids, pictures, Statistics, Travel, University life with tags , , , , , , , , , , , , , , , on September 3, 2014 by xi'an

bdbmbdGreat poster session yesterday night and at lunch today. Saw an ABC poster (by Dennis Prangle, following our random forest paper) and several MCMC posters (by Marco Banterle, who actually won one of the speed-meeting mini-project awards!, Michael Betancourt, Anne-Marie Lyne, Murray Pollock), and then a rather different poster on Mondrian forests, that generalise random forests to sequential data (by Balaji Lakshminarayanan).  The talks all had interesting aspects or glimpses about big data and some of the unnecessary hype about it (them?!), along with exposing the nefarious views of Amazon to become the Earth only seller!, but I particularly enjoyed the astronomy afternoon and even more particularly Steve Roberts sweep through astronomy machine-learning. Steve characterised variational Bayes as picking your choice of sufficient statistics, which made me wonder why there were no stronger connections between variational Bayes and ABC. He also quoted the book The Fourth Paradigm: Data-Intensive Scientific Discovery by Tony Hey as putting forward interesting notions. (A book review for the next vacations?!) And also mentioned zooniverse, a citizens science website I was not aware of. With a Bayesian analysis of the learning curve of those annotating citizens (in the case of supernovae classification). Big deal, indeed!!!

big data, big models, it is a big deal!

Posted in pictures, Statistics, University life with tags , , , , , , on September 2, 2014 by xi'an

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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #8)

Posted in Kids, Mountains, R, Statistics, Travel, University life with tags , , , , , , , , , , , , , , , on September 13, 2013 by xi'an

A reposted item of news about MCMSki IV: as posted by Brad Carlin this afternoon to the Biometrics Section and Bayesian Statistical Science Section of the ASA,

The fifth joint international meeting of the IMS (Institute of Mathematical Statistics) and ISBA (International Society for Bayesian Analysis), nicknamed “MCMSki IV”, will be held in Chamonix Mont-Blanc, France, from Monday, January 6 to Wednesday, January 8, 2014.  The meeting, the first for the newly-created BayesComp section of ISBA, will focus on all aspects of MCMC theory and methodology, including related fields like sequential Monte Carlo, approximate Bayesian computation, Hamiltonian Monte Carlo.  In contrast with the earlier meetings, it will merge the satellite Adap’ski workshop into the main meeting by having parallel invited and contributed sessions on those different themes, as well as poster sessions on both Monday and Tuesday nights.  In addition, a one-day post-conference satellite workshop on Bayesian nonparametrics, modelling and computations (“BNPski)” will be held in the same location on January 9th, 2014.

Please see our conference website,

http://www.pages.drexel.edu/~mwl25/mcmski/

for more information, including links to the preliminary program, lodging and travel information, and our conference registration page.  Please note the “early bird” registration deadline of *October 15, 2013*.

Finally (and most importantly for some), we are very pleased to announce that we have received funds from ISBA, SBSS, and other sources sufficient to help support the travel expenses of some junior investigators (defined as current PhD student, or less than 5 years since PhD). Information about how to apply for this support can be found at:

http://www.pages.drexel.edu/~mwl25/mcmski/student.html

Note that to apply you must first register with the ISBA website (if you have not done so already) and submit your abstract to the ISBA Abstract Page.  Full directions are given at the link above.  The deadline to apply for this financial support is also October 15, 2013.

We look forward to welcoming you in Chamonix this January!

Best,

Brad Carlin, Antonietta Mira, and Christian Robert
MCMSki IV conference co-organizers

re-read paper

Posted in Books, Statistics, Travel, University life with tags , , , , , , , on September 3, 2013 by xi'an

Today, I attended the RSS Annual Conference in Newcastle-upon-Tyne. For one thing, I ran a Memorial session in memory of George Casella, with my (and his) friends Jim Hobert and Elias Moreno as speakers. (The session was well-attended if not overwhelmingly so.) For another thing, the RSS decided to have the DIC Read Paper by David Spiegelhalter, Nicky Best, Brad Carlin and Angelika van der Linde Bayesian measures of model complexity and fit re-Read, and I was asked to re-discuss the 2002 paper. Here are the slides of my discussion, borrowing from the 2006 Bayesian Analysis paper with Gilles Celeux, Florence Forbes, and Mike Titterington where we examined eight different versions of DIC for mixture models. (I refrained from using the title “snow white and the seven DICs” for a slide…) I also borrowed from our recent discussion of Murray Aitkin’s (2009) book. The other discussant was Elias Moreno, who focussed on consistency issues. (More on this and David Spiegelhalter’s defence in a few posts!) This was the first time I was giving a talk on a basketball court (I once gave an exam there!)

snapshot from Annecy

Posted in Mountains, pictures, Running, Statistics, Travel, University life with tags , , , , , , on July 15, 2013 by xi'an

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