Archive for New York

Expectation Propagation as a Way of Life on-line

Posted in pictures, Statistics, University life with tags , , , , , , , , , , , , , on March 18, 2020 by xi'an

After a rather extended shelf-life, our paper expectation propagation as a way of life: a framework for Bayesian inference on partitioned data which was started when Andrew visited Paris in… 2014!, and to which I only marginally contributed, has now appeared in JMLR! Which happens to be my very first paper in this journal.

The Magicians [book review]

Posted in Books, Kids, Travel, Wines with tags , , , , , , , , , on September 17, 2016 by xi'an

While in Melbourne, I heard a recommendation for Lev Grossman’s The Magicians and the next day, while checking the Melbourne Writers Festival bookstore, found the book (rather than the Kristoff volume I was seeking), bought it, and read it within a few days.

‘Brakebills will remind readers of Hogwarts, though with more illicit fondling. Grossman has written what could crudely be labeled a Harry Potter for adults.” , NYT

So is this an Harry Potter for adults?! First, I think Harry Potter can be read by adults (if I qualify as adult!). This remark presumably means the book should not be read by young readers, maybe, due to recurrent sex and alcohol consumption, plus some drugs and an overall depressive tone.

Back to Harry Potter, there is the same magical boarding school feeling, even though it is located in upstate New York on the Hudson river.  And not in Scotland. With an equivalent to Quidditch, an evil magician, exams, surly teens, one or two love triangles, &tc. If in a more modern and American way. The difference with Harry Potter is that it also doubles as Narnia! A Narnia eventually turned wrong and sour, but nonetheless a strong similarity of stories and ideas. Of course, this parallel could be seen as an attempt at deconstruction, exhibiting the inconsistencies in the original novels, but it is so subtle it does not feel like it. There are the same encounters with sentient animal creatures, who never reappear after, the same call for Kings and Queens, as in Narnia. This lack of depth at exploring the connections between Harry Potter, Narnia and even some aspects of the Wheel of Time is frustrating in that something great could have come of it. And then… then… comes the worst literary trick in my list, the call to a subterranean quest with endless monsters and accidents! (I obviously exclude Tolkien’ Moria episode from this list!!!) Concluding with the evil character dumping information in the last battle to explain missing bits and pieces in the story.

So, in conclusion, not such a magical book, even though I read it within a few days thanks to my 39 hour trip back to Paris. The Magicians remains too teeny for my taste, hearing self-deprecating depressive monologues occurs way too often to make the main character congenial, and the story has not enough depth or structure to be compelling. A reviewer rightly pointed out it feels like fandom fiction. Rather than a universe on its own. (As for instance Aaronovitch’ Rivers of London series.)

Cayuga 1989

Posted in Kids, Travel, Wines with tags , , , , , on August 20, 2015 by xi'an

cayuga

George’s dream

Posted in Kids, Travel with tags , , , , , on April 11, 2015 by xi'an

doublewashWhile I have shared this idea with many of my friends [in both senses that I mentioned it and that they shared the same feeling that it would be a great improvement], the first time I heard of the notion was in George Casella‘s kitchen in Ithaca, New York, in the early 1990’s… We were emptying the dishwasher together and George was reflecting that it would be so convenient to have a double dishwasher and remove the need to empty it altogether! Although, at the moral level, I think that we should do without dishwashers, I found this was a terrific idea and must have told the joke to most of my friends. I was nonetheless quite surprised and very pleased to receive the news from Nicole today that Fisher & Paykel (from Auckland, New Zealand) had gone all the way to produce a double dishwasher, or more exactly a double dishdrawer, perfectly suited to George’s wishes! (Pleased that she remembered the notion after all those years, not pleased with the prospect of buying a double dish washer for more than double the cost of [and a smaller volume than] a regular dishwasher!)

1500th, 3000th, &tc

Posted in Books, R, Statistics, University life with tags , , , , , , , , , , , , on January 8, 2012 by xi'an

As the ‘Og reached its 1500th post and 3000th comment at exactly the same time, a wee and only mildly interesting Sunday morning foray in what was posted so far and attracted the most attention (using the statistics provided by wordpress). The most visited posts:

Title Views
Home page 203,727
In{s}a(ne)!! 7,422
“simply start over and build something better” 6,264
Julien on R shortcomings 2,676
Sudoku via simulated annealing 2,402
About 1,876
Of black swans and bleak prospects 1,768
Solution manual to Bayesian Core on-line 1,628
Parallel processing of independent Metropolis-Hastings algorithms 1,625
Bayesian p-values 1,595
Bayes’ Theorem 1,537
#2 blog for the statistics geek?! 1,526
Do we need an integrated Bayesian/likelihood inference? 1,501
Coincidence in lotteries 1,396
Solution manual for Introducing Monte Carlo Methods with R 1,340
Julian Besag 1945-2010 1,293
Tornado in Central Park 1,093
The Search for Certainty 1,016

Hence, three R posts (incl. one by Julien and one by Ross Ihaka), three (critical) book reviews, two solution manuals, two general Bayesian posts, two computational entries, one paper (with Pierre Jacob and Murray Smith), one obituary, and one photograph news report… Altogether in line with the main purpose of the ‘Og. The most commented posts:

Post Comments
In{s}a(ne)!! 31
“simply start over and build something better” 30
That the likelihood principle does not hold… 23
Incoherent inference 23
Lack of confidence in ABC model choice 20
Parallel processing of independent Metropolis-Hastings algorithms 19
ABC model choice not to be trusted 17
MCMC with errors 16
Coincidence in lotteries 16
Bessel integral 14
Numerical analysis for statisticians 14

Not exactly the same as above! In particular, the posts about ABC model choice and our PNAS paper got into the list. At last, the top search terms:

Search Views
surfers paradise 1,050
benidorm 914
introducing monte carlo methods with r 514
andrew wyeth 398
mistborn 352
abele blanc 350
nested sampling 269
particle mcmc 269
bayesian p-value 263
julian besag 257
rites of love and math 249
millenium 237
bayesian p value 222
marie curie 221
bonsai 200

(out of which I removed the dozens of variations on xian’s blog). I find it rather sad that both top entries are beach towns that are completely unrelated to my lifestyle and to my vacation places. Overall, more than a  half of those entries do not strongly relate to the contents of the ‘Og (even though I did post at length about Saunderson’s Mistborn and Larsson’s Millenium trilogies). At last, the most popular clicks are

URL Clicks
amazon.com/gp/product/1441915753?ie=UTF8&tag=chrprobboo-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=1441915753 1,243
stat.columbia.edu/~cook/movabletype/mlm 1,039
terrytao.wordpress.com 583
amazon.com/gp/product/0387389792?ie=UTF8&tag=chrprobboo-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0387389792 575
arxiv.org/abs/1012.2184 531
radfordneal.wordpress.com/2010/08/15/two-surpising-things-about-r 529
romainfrancois.blog.free.fr 505
statisfaction.wordpress.com 404
ceremade.dauphine.fr/~xian/basudo.R 395
stackoverflow.com/questions/3706990/is-r-that-bad-that-it-should-be-rewritten-from-scratch 372
amazon.com/gp/product/0387212396?ie=UTF8&tag=chrprobboo-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0387212396 298
radfordneal.wordpress.com/2010/09/03/fourteen-patches-to-speed-up-r 298
cs.ubc.ca/~cornebis 288
statisticsforum.wordpress.com 282
arxiv.org/abs/1001.2906 279
arxiv.org/abs/1010.1595 257
amazon.com/gp/redirect.html?ie=UTF8&location=http://www.amazon.com/gp/entity/-/B001H6GSKC&tag=chrprobboo-20&linkCode=ur2&camp=1789&creative=390957 256
ceremade.dauphine.fr/~xian/BCS/solutions.pdf 253
rss.org.uk/main.asp?page=3005 243
www3.interscience.wiley.com/cgi-bin/fulltext/119424936/PDFSTART 216
stat.auckland.ac.nz/~ihaka/downloads/Compstat-2008.pdf 203

which include links to my books on Amazon, Andrew Gelman’s, Terry Tao’s, Radford Neal’s and Romain François’s blogs, the CREST stat students collective blog, and a few arXiv papers of mine’s…