Archive for Nottingham

a journal of the plague year [soon to turn one…]

Posted in Books, Kids, Mountains, pictures, Travel with tags , , , , , , , , , , , , , , , , , , , , , , , on March 6, 2021 by xi'an

Read in a few Sunday hours Living proof by John Harvey, a 1995 novel that I had found in the book exchange section of our library. A very easy read but rather enjoyable with several stories within stories and books within books. The resolution of the main murder mystery was disappointing but I enjoyed the inclusion of real artists like Ian Rankin and Mark Timlin. With a pastiche of P.D. James. And plenty of jazz references. Plus two characters meeting while studying at Warwick. And some shared glimpses of Nottingham like the statue of Robin Hood and the troglodyte Ye Olde Trip to Jerusalem. where I was once  invited for a pint… The story takes place during and around Nottingham’s Shots in the Dark festival. I hence grabbed another volume in the library in prevision of another lazy afternoon!

Baked rather decent chapattis for a take-home Bengali dinner but ruined the pan and started the fire alarm! Also tried to bake tortillas but mixed up the proportions of flour and water, ending up with a type of galette or injera instead (which worked as a container for the fajitas!).

Eventually watched the last two episodes of the Queen’s Gambit, but found them somewhat disappointing, between the main characters’ attitude that did not feel in tune with the 1960’s, the French femme fatale who cannot pronounce Jardins du Luxembourg, and the somewhat rosy tale of two orphans achieving financial freedom and professional success before their majority. Also watched the Korean Space Sweepers after an exhausting day, with a very shallow plot and a complete disregard for physics.

Read the duology of Six of Crows and Crooked Kingdom, by Leigh Bardugo, set in the same universe as the Grisha novels. Which I had read five years ago and somewhat forgotten than these novels were written as young adult books, with a resulting shallow plot, so full of sudden changes of fortune that any worry for the (caricaturesque) characters vanishes (till the one point when one should have) in a definitive suspension of suspense. (The Guardian reviewed Six of Crows in the Children’s book review section, which feels rather inappropriate given the degree of abuse the teens in the novels are submitted to, with two girls surviving sexual enslavement in the local brothels.) Just like the Grisha novels were set in a postcard version of Russia, these novels are taking place in a similarly thin (pannenkoek) version of Amsterdam (with waffles as the only culinary delicacy!). I do realise these series have a huge fan base, to the point of leading to an incoming Netflix series. But I found the more elaborate Ninth House much more enjoyable… (In tune with this series of reviews, the second book includes a plague episode with a modicum of realism, at least in its early stages.)

¼th i-like workshop in St. Anne’s College, Oxford

Posted in pictures, Statistics, Travel, University life with tags , , , , , , , , , on March 27, 2014 by xi'an

IMG_0153Due to my previous travelling to and from Nottingham for the seminar and back home early enough to avoid the dreary evening trains from Roissy airport (no luck there, even at 8pm, the RER train was not operating efficiently!, and no fast lane is planed prior to 2023…), I did not see many talks at the i-like workshop. About ¼th, roughly… I even missed the poster session (and the most attractive title of Lazy ABC by Dennis Prangle) thanks to another dreary train ride from Derby to Oxford.

IMG_0150As it happened I had already heard or read parts of the talks in the Friday morning session, but this made understanding them better. As in Banff, Paul Fearnhead‘s talk on reparameterisations for pMCMC on hidden Markov models opened a wide door to possible experiments on those algorithms. The examples in the talk were mostly of the parameter duplication type, somewhat creating unidentifiability to decrease correlation, but I also wondered at the possibility of introducing frequent replicas of the hidden chain in order to fight degeneracy. Then Sumeet Singh gave a talk on the convergence properties of noisy ABC for approximate MLE. Although I had read some of the papers behind the talk, it made me realise how keeping balls around each observation in the ABC acceptance step was not leading to extinction as the number of observations increased. (Summet also had a good line with his ABCDE algorithm, standing for ABC done exactly!) Anthony Lee covered his joint work with Krys Łatuszyński on the ergodicity conditions on the ABC-MCMC algorithm, the only positive case being the 1-hit algorithm as discussed in an earlier post. This result will hopefully get more publicity, as I frequently read that increasing the number of pseudo-samples has no clear impact on the ABC approximation. Krys Łatuszyński concluded the morning with an aggregate of the various results he and his co-authors had obtained on the fascinating Bernoulli factory. Including constructive derivations.

After a few discussions on and around research topics, it was too soon time to take advantage of the grand finale of a March shower to walk from St. Anne’s College to Oxford Station, in order to start the trip back home. I was lucky enough to find a seat and could start experimenting in R the new idea my trip to Nottingham had raised! While discussing a wee bit with my neighbour, a delightful old lady from the New Forest travelling to Coventry, recovering from a brain seizure, wondering about my LaTeX code syntax despite the tiny fonts, and who most suddenly popped a small screen from her bag to start playing Candy Crush!, apologizing all the same. The overall trip was just long enough for my R code to validate this idea of mine, making this week in England quite a profitable one!!! IMG_0145