Archive for physics

O’Bayes 2013 [#2]

Posted in pictures, Running, Statistics, Travel, University life with tags , , , , , , , on December 19, 2013 by xi'an

IMG_2193Another day at O’Bayes 2013, recovering from the flow of reminiscences of yesterday. Talks from Guido Consonni on running reference model selection in complex designs, from Dimitris Fouskakis on integrating out imaginary observations in a g-prior, which seems to bring more sparsity than the hyper-g prior in variable selection, from François Perron on Bayesian inference for copulas, with an innovative parametrisation and links with Polya trees, from Nancy Reid and Laura Ventura on likelihood approximations and pseudo-likelihoods, offering a wide range of solutions for ABC (or BC) references (with the lingering question of the validation of the approximation for a given sample, as discussed by Brunero Liseo) and from two physicists to conclude the day! Tomorrow is the final day and I hope I can go running a last time in the woods before the flights back to Paris.

Mathematics and realism

Posted in Books with tags , , , , , , , , , , , on November 27, 2010 by xi'an

I read in Liberation a rather surprising tribune (in French) by “Yann Moix, writer”. The starting point is a criticism of Stephen Hawking (and Leonard Mlodinow)’s recent book The Grand Design, With regards to its conclusion that a god is not necessary to explain the creation and the working of the Universe: “It is not necessary to invoke God to light the blue touch paper and set the universe going.” I haven’t read Hawking’s book (although I briefly considered buying it in London last time I was there, here is a Guardian review), I had never heard before of this (controversial) writer, and I do not see the point in debating about supernatural beings (except when reviewing a fantasy book!). However, the arguments of Moix are rather limited from a philosophical viewpoint.

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