Vim plugin for R
Just found a very nice plugin for using R in Vim. It's unbelievable comfortable! [Read more...]
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AMIS revised & resubmitted
After a thorough revision that removed most of the theoretical attempts at improving our understanding of AMIS convergence, we have now resubmitted the AMIS paper to Scandinavian Journal of Statistics and arXived the new version as well. (I remind the reader that AMIS stands for adaptive mixture importance sampling and ... [Read more...]
R Workflow: Melbourne R Users Dec 1st 2010
Melbourne R Users Group December 1st 2010 Meeting (Meetup page). 1. “What my R code looks and feels like (Vanilla)” by Geoff Robinson The other talk from the session was by Geoff Robinson who discussed several useful strategies for working … Continue reading →
In The Wild: rApache 1.1.13 in Ubuntu and Source
I rolled a new released eight days ago, but tumblr was down and I forgot to post. Then yesterday I remembered again, but then tumblr was down again. Doh!
You can get rApache 1.1.13 from here in source form or learn about how to get it here in binary f...
Joe West vs. Bruce Froemming: A Crude Umpire LHB/RHB Bias Comparison
In my last two posts, I have tinkered with the 'gam' package to create heat maps for individual umpire strike zones. I went ahead and grabbed Joe West's data (which has a lot more pitches than Bruce Froemming in it, since Froemming's data is only from...
Programming languages, ranked by popularity
In a presentation to the Chicago R User Group last night, Drew Conway used his new Infochimps package in R to assess the relative popularity of programming languages. Drew used the word.stats function in the Infochimps package to count the frequency of common computer languages mentioned in Twitter messages, ... [Read more...]
Disas-tea-R at dawn
This was bound to happen sooner or later, given my addiction to tea and sleepless nights, so I eventually managed to spill a cup of tea over my Mac… I had been working for a few hours in my hotel room in Philadelphia, completing an ABC paper with Jean-Michel Marin ... [Read more...]
R 2.12.1 is out
As promised, the latest patch to R is out with the release of R 2.12.1, as announced today by the R Core Team. If you build R yourself, sources are available now at your local CRAN mirror, and binaries for Windows, Mac and Linux will be available in the next few ... [Read more...]
Tennis and risk management
As mentioned already here, while we were going to Québec City for the workshop, we had interesting discussions in the car, and Maciej mentioned an article recently published in The Actuary,
Hence, I wanted to discuss (extremely) rare event probabi...
Value of an R object in an expression
Just wanted to create an expression, existing of some mathematical annotation and a value of an R object. Wasn't that intuitive! [Read more...]
Data Driven Journalism
Last night at the Bay Area UseR Group meeting, Peter Aldhous, San Francisco Bureau Chief of New Scientist Magazine, gave an inspiring presentation about Data Driven Journalism. Even though the newspaper industry is faltering as a business model, there's a beacon of light: journalists can be the driving force behind ... [Read more...]
Databases (SQL, noSQL); Interfacing R with Excel
Los Angeles R users group Dec. 14 2010 meeting (see meetup info here): 1. A SQL primer for R users – Neal Fultz Video and slides will be available soon 2. R Database Access – Shrikrishna Bhogaonker 3. NoSQL data … Continue reading →
I really need to find hot (and sexy) topics
50 days ago (here), I was supposed to be very optimistic about the probability that I could reach a million viewed pages on that blog (over a bit more than two years). Unfortunately, the wind has changed and today, the probability is quite low...
... [Read more...]
Customizing Maps in R: spplot() and latticeExtra functions
I recently noticed the new latticeExtra page on R-forge, which contains many very interesting demos of new lattice-related functionality. There are strong opinions about the "best" graphics system in R (base graphics, grid graphics, lattice, ggplot, et... [Read more...]
Examples for infochimps Package, and Intro Slides
Tomorrow I am headed out of town for a few weeks, so posting will be lighter than the usual lightness. My first stop is Chicago, and tomorrow night I will be speaking about my R package for the infochimps API at the Chicago R Users Group. If you are in ... [Read more...]
Facebook’s Social Network Graph
Paul Butler, an intern on Facebook’s data infrastructure engineering team, was interested in visualizing the "locality of friendship". Luckily, he has some great data to work with: Facebook's social network of the friendships between its 500 million members. But visualizing that much data can be a challenge in its own ... [Read more...]
Logical operators in R
In R, the operators “|” and “&” indicate the logical operations OR and AND. For example, to test if x equals 1 and y equals 2 we do the following: __ x = 1; y = 2 __ (x == 1) & (y == 2) [1] TRUE However, if you are used to programming in [...] [Read more...]
Is it that stupid to make extremely long term forecast when studying mortality ?
I received recently a comment by FCA (here) who raised an important question, about forecast in dynamic mortality models. (S)he mentioned that from his(her) point of view, the econometric models I considered were "good to predict for the next, say,... [Read more...]
RcppDE 0.1.0
A new package RcppDE has been uploaded in a first version 0.1.0 to
CRAN.
It provides differential evolution optimisation---a variant of stochastic
optimisation that is similar to genetic algorithms but particularly suitable
for the floating-point repr... [Read more...]
Adap’skiii [latest]
Just to point out there still is room for more participants to the Adap’skiii workshop! We have now reached 60 participants for this Utah workshop and would welcome more, quite obviously! All participants are also free to present a poster on the evening of the 4th, in the bar. Filed ... [Read more...]
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