Posts Tagged ‘ Travel ’

Highlights from Milan Expo 2015

June 22, 2015
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Highlights from Milan Expo 2015

You may notice how quiet it is on the blog. That's because I was in Milan last week and spent some memorable time at the EXPO. Here are some highlights as well as tips for those who will be attending....

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scale acceleration

April 23, 2015
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scale acceleration

Kate Lee pointed me to a rather surprising inefficiency in matlab, exploited in Sylvia Früwirth-Schnatter’s bayesf package: running a gamma simulation by rgamma(n,a,b) takes longer and sometimes much longer than rgamma(n,a,1)/b, the latter taking advantage of the scale nature of b. I wanted to check on my own whether or not R faced the same […]

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a vignette on Metropolis

April 12, 2015
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a vignette on Metropolis

Over the past week, I wrote a short introduction to the Metropolis-Hastings algorithm, mostly in the style of our Introduction to Monte Carlo with R book, that is, with very little theory and worked-out illustrations on simple examples. (And partly over the Atlantic on my flight to New York and Columbia.) This vignette is intended […]

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MCMskv, Lenzerheide, Jan. 5-7, 2016

March 30, 2015
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MCMskv, Lenzerheide, Jan. 5-7, 2016

Following the highly successful [authorised opinion!, from objective sources] MCMski IV, in Chamonix last year, the BayesComp section of ISBA has decided in favour of a two-year period, which means the great item of news that next year we will meet again for MCMski V [or MCMskv for short], this time on the snowy slopes […]

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Bumps chart goes mainstream

March 19, 2015
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Bumps chart goes mainstream

It’s a happy day when one of my favorite chart types, the Bumps chart, makes it to the Wall Street Journal, and the front page no less! (Link to article) This chart shows the ground shifting in global auto production...

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Reading some wild traffic statistics from New Zealand

March 19, 2015
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Only 6% of crashes in New Zealand involve foreign drivers, according to the latest figures provided by the Ministry of Transport. But in some remote regions of the South Island particularly popular with tourists for their scenery... foreign drivers are involved in about a quarter of all crashes. These sentences come from a CNN article about a vigilante movement in those regions popular with tourists. The vigilantes snatch car keys…

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MissData 2015 in Rennes [June 18-19]

February 9, 2015
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MissData 2015 in Rennes [June 18-19]

This (early) summer, a conference on missing data will be organised in Rennes, Brittany, with the support of the French Statistical Society [SFDS]. (Check the website if interested, Rennes is a mere two hours from Paris by fast train.)Filed under: R, ...

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Sequential Monte Carlo 2015 workshop

January 22, 2015
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Sequential Monte Carlo 2015 workshop

An announcement for the SMC 2015 workshop: Sequential Monte Carlo methods (also known as particle filters) have revolutionized the on-line and off-line analysis of data in fields as diverse as target tracking, computer vision, financial modelling, brain imagery, or population ecology. Their popularity stems from the fact that they have made possible to solve numerically many […]

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An uninformative end state

November 25, 2014
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An uninformative end state

This chart cited by ZeroHedge feels like a parody. It's a bar chart that doesn't utilize the length of bars. It's a dot plot that doesn't utilize the position of dots. The range of commute times (between city centers and...

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How a fraud detection algorithm conspired to ruin my recent trip

October 30, 2014
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I have been traveling quite a bit lately, and last week, I went to Rome for a few days, and spent time at the KDIR conference. Rome is one of my favorite destinations and apart from the architecture and museums, and the restaurants, I also enjoy shopping there. To my dismay, a gray cloud followed me around this entire trip - in the form of a misfiring fraud detection algorithm.…

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