## I give an X

Posted in Travel with tags , , , , on April 23, 2015 by xi'an

## Gray matters [not much, truly]

Posted in Books, University life with tags , , , , , , , , , on March 21, 2015 by xi'an

Through the blog of Andrew Jaffe, Leaves on the Lines, I became aware of John Gray‘s tribune in The Guardian, “What scares the new atheists“. Gray’s central points against “campaigning” or “evangelical” atheists are that their claim to scientific backup is baseless, that they mostly express a fear about the diminishing influence of the liberal West, and that they cannot produce an alternative form of morality. The title already put me off and the beginning of the tribune just got worse, as it goes on and on about the eugenics tendencies of some 1930’s atheists and on how they influenced Nazi ideology. It is never a good sign in a debate when the speaker strives to link the opposite side with National Socialist ideas and deeds. Even less so in a supposedly philosophical tribune! (To add injury to insult, Gray also brings Karl Marx in the picture with a similar blame for ethnocentrism…) Continue reading

## Alan Turing Institute

Posted in Books, pictures, Running, Statistics, University life with tags , , , , , , , , , on February 10, 2015 by xi'an

The University of Warwick is one of the five UK Universities (Cambridge, Edinburgh, Oxford, Warwick and UCL) to be part of the new Alan Turing Institute.To quote from the University press release,  “The Institute will build on the UK’s existing academic strengths and help position the country as a world leader in the analysis and application of big data and algorithm research. Its headquarters will be based at the British Library at the centre of London’s Knowledge Quarter.” The Institute will gather researchers from mathematics, statistics, computer sciences, and connected fields towards collegial and focussed research , which means in particular that it will hire a fairly large number of researchers in stats and machine-learning in the coming months. The Department of Statistics at Warwick was strongly involved in answering the call for the Institute and my friend and colleague Mark Girolami will the University leading figure at the Institute, alas meaning that we will meet even less frequently! Note that the call for the Chair of the Alan Turing Institute is now open, with deadline on March 15. [As a personal aside, I find the recognition that Alan Turing’s genius played a pivotal role in cracking the codes that helped us win the Second World War. It is therefore only right that our country’s top universities are chosen to lead this new institute named in his honour. by the Business Secretary does not absolve the legal system that drove Turing to suicide….]

## snow!

Posted in Kids, pictures, Travel, University life with tags , , , , , on January 29, 2015 by xi'an

## Scottish polls…

Posted in pictures, Statistics, Travel with tags , , , , , , , , on September 11, 2014 by xi'an

As much as I love Scotland, or because of it, I would not dream of suggesting to Scots that one side of the referendum sounds better than the other. However, I am rather annoyed at the yoyo-like reactions to the successive polls about the result, because, just like during the US elections, each poll is analysed separately rather than being pooled with the earlier ones in a reasonable meta-analysis… Where is Nate Silver when we need him?!

## Bayes.2.5.0 reminder

Posted in Books, Statistics, Travel, University life with tags , , , , , , on June 2, 2013 by xi'an

Just a reminder that Bayes 250 at the RSS is taking place in less than three weeks and that it would be a good idea to register now (using a form and not an on-line page, unfortunately)! Here is the official program.

Current Schedule
11:00 Registration and tea
11:30 Welcome
11:35 Anthony O’Hagan (Warwickshire) and Dennis Lindley (Somerset) – video recorded interview
12:15 Gareth Roberts (University of Warwick) “Bayes for differential equation models”

12:45 14:00 Lunch and posters

14:00 Sylvia Richardson (MRC Biostatistics Unit) “Biostatistics and Bayes”
14:30 Dennis Prangle (Lancaster University) “Approximate Bayesian Computation”
14:50 Phil Dawid (University of Cambridge), “Putting Bayes to the Test”

15:20 tea

16:00 Mike Jordan (UC Berkeley) “Feature Allocations, Probability Functions, and Paintboxes”
16:30 Iain Murray (University of Edinburgh) “Flexible models for density estimation”
16:50 YeeWhye Teh (University of Oxford) “MCMC for Markov and semi-Markov jump processes”

17:20 posters and drinks

Day 2:

09:30 Michael Goldstein (Durham University) “Geometric Bayes”
10:00 Andrew Golightly (Newcastle University), “Auxiliary particle MCMC schemes for partially observed diffusion processes”
10:20 Nicky Best (Imperial College London) “Bayesian space-time models for environmental epidemiology”

10:50 tea

11:15 Christophe Andrieu (University of Bristol) “Inference with noisy likelihoods”
11:45 Chris Yau (Imperial College London) “Understanding cancer through Bayesian approaches”
12:05 Stephen Walker (University of Kent) “The Misspecified Bayesian”

12:35 Lunch

13:30 Simon Wilson (Trinity College Dublin), “Linnaeus, Bayes and the number of species problem”
14:00 Ben Calderhead (UCL) “Probabilistic Integration for Differential Equation Models”
14:20 Peter Green (University of Bristol and UT Sydney) “Bayesian graphical model determination”
14:50 Closing Remarks Adrian Smith (University of London)

## MCMC at ICMS (3)

Posted in pictures, Statistics, Travel, University life with tags , , , , , , , , , , , , , , , on April 26, 2012 by xi'an

The intense pace of the two first days of our workshop on MCMC at ICMS had apparently taken an heavy toll on the participants as a part of the audience was missing this morning! Although not as a consequence of the haggis of the previous night at the conference dinner, nor even as a result of the above pace. In fact, the missing participants had opted ahead of time for leaving the workshop early, which is understandable given everyone’s busy schedule, esp. for those attending both Bristol and Edinburgh workshops, however slightly impacting the atmosphere of the final day. (Except for Mark Girolami who most unfortunately suffered such a teeth infection that he had to seek urgent medical assistance yesterday afternoon. Best wishes to Mark for a prompt recovery, say I with a dental appointment tomorrow…!)

$y=\sqrt{1-\beta^2}x_{t-1}+\beta\zeta\quad 0<\beta<1,\zeta\sim\varphi(|\zeta|)$