Julian Besag memorial

Homme libre, toujours tu chériras la mer!
La mer est ton miroir; tu contemples ton âme
Dans le déroulement infini de sa lame,
Et ton esprit n’est pas un gouffre moins amer.
Charles Baudelaire, Les Fleurs du Mal

The first afternoon of the memorial session for Julian Besag in Bristol was an intense and at times emotional moment, where friends and colleagues of Julian shared memories and stories. This collection of tributes showed how much of a larger-than-life character he was, from his long-termed and wide-ranged impact on statistics to his very high expectations, both for himself and for others, leading to a total and uncompromising research ethics, to his passion for [extreme] sports and outdoors. (The stories during and after diner were of a more personal nature, but at least as much enjoyable!) The talks on the second day showed how much and how deeply Julian had contributed to spatial statistics and agricultural experiments, to pseudo-likelihood, to Markov random fields and image analysis, and to MCMC methodology and practice. I hope I did not botch too much my presentation on the history of MCMC, while I found reading through the 1974, 1986 and 1993 Read Papers and their discussions an immensely rewarding experiment (I wish I had done prior to completing our Statistical Science paper, but it was bound to be incomplete by nature!). Some interesting links made by the audience were the prior publication of proofs of the Hammersley-Clifford theorem in 1973 (by Grimmet, Preston, and Steward, respectively), as well as the proposal of a Gibbs sampler by Brian Ripley as early as 1977 (even though Hastings did use Gibbs steps in one of his examples). Christophe Andrieu also pointed out to me a very early Monte Carlo review by John Halton in the 1970 SIAM Rewiew, review that I will read (and commment) as soon as possible. Overall, I am quite glad I could take part in this memorial and I am grateful to both Peters for organising it as a fitting tribute to Julian.

8 Responses to “Julian Besag memorial”

  1. [...] I am off (again: 4th time this year) to England, then Scotland, for a week. The first stop is in Bristol, where the Statistics group holds a four day workshop on Confronting Intractability in Statistical [...]

  2. [...] when I saw Markus Heitz’s The Dwarves last month in Bristol, I assumed the author had used the same trick to write an interesting and innovative story… [...]

  3. [...] book I read during my trip to Bristol is Murakami’s After the Quake. I was pointed out to it thanks to a column in Le Monde that [...]

  4. [...] On Sunday, Xian’s Og gave us a piece on the memorial for Julian Besag. [...]

  5. [...] Peter Diggle gave his “short history” of spatial statistics this morning (I typed this in the taxi from Charles de Gaulle airport, after waiting one hour for [...]

  6. [...] the flight back from Bristol, I fought with this arXiv paper of Kengo Kamatani, “Weak consistency of MCMC [...]

  7. [...] in Bristol, I received the very good news that our ABC model choice submission to PNAS had passed the first [...]

  8. [...] Xi'an's Og an attempt at bloggin, from scratch… « Julian Besag memorial [...]

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