April 2009

GSoC 2009 Chicago area meeting

April 30, 2009 | 0 Comments

Thanks to the effort of the tireless Borja Sotomayor for the local ACM chpater as well as the good folks at Google in Chicago, we had a local kickoff meeting for this year's Google Summer of Code at Google's Chicago office. A few accepted GSoC students, mentors, and a few ... [Read more...]

Slides from most recent R and HPC tutorial

April 29, 2009 | 0 Comments

A little earlier I put the slides from my Introduction to High-Performance Computing with R tutorial at the R / Finance conference last week onto my talks / presentation page. Other tutorials, talks and keynotes are also being posted on the conference program page. This tutorial was a shorter format of just ... [Read more...]

Babylonian confusion or flexibility?

April 29, 2009 | 0 Comments

As we are used from UNIX. there is not one single suitable solution to solve a problem, but usually a few different ways to do “the same”. Depending on what commands we know (best), we will chose the one or the other solution. Only the absolute expert will be able ... [Read more...]

Rails, Scalability and Sexism

April 29, 2009 | 0 Comments

It’s been a long time since I posted here, for a number of reasons: Change of focus from Ruby programming to Linux capacity planning, especially in the realm of I/O subsystems. You’ll find more about that at http://linuxcapacityplanning.com... [Read more...]

screen in ubuntu 9.04

April 29, 2009 | 0 Comments

As I told in a previous post, I consider the unix tool screen essential for my work. It seems that the just released Ubuntu 9.04  contains a package that make it easier to configure and use. You can find the full story here.
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Google Summer of Code 2009: R / Quantlib

April 28, 2009 | 0 Comments

With everything that has been going on of late, I have yet to mention that Khanh Nguyen, a Ph.D. student in Computer Science at U Mass / Boston, will be working with me on RQuantLib as part of the Google Summer of Code program this year. We had twenty-two applications ... [Read more...]

2009 Chambers award winner announced

April 28, 2009 | 0 Comments

We are pleased to announce that the judges of the Chambers Award have selected the winner of the 2009 competition: Yihui Xie, from the Renmin University of China. Yihui received this year's award for his submission "animation," an R package for using g... [Read more...]

R/Finance 2009 Overview

April 28, 2009 | 0 Comments

The first international R/Finance 2009 conference in Chicago, IL was a huge success! David Smith from REvolution Computing has written a great summary of the entire event. I'll take the lazy route and point you to his blog post. :)The first internati...
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R / Finance 2009

April 26, 2009 | 0 Comments

Our inaugural R / Finance conference, mentioned here twice is now over. We were fortunate to get seven outstanding invited keynote speakers, as well as eleven excellent presentations. This was preceded by four short tutorials (and I'll post slides from my Introduction to High-Performance Computing with R soon). With about 150 registered ... [Read more...]

Colors in the R terminal

April 24, 2009 | 0 Comments

Today, I'd like to suggest a new R package that you can download from here. Still in its early development, the xterm256 package allows to print text in the R terminal using different colours. You can find more information here. The picture below depic...
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Real nice Boston Marathon writeup

April 23, 2009 | 0 Comments

This article from the Boston Globe gives an excellent description of what running Boston last Monday was like, and why we keep coming back, almost regardless. The writer, for whom it was the fifth Boston and ninth total, expresses the range of emotions, expectations, frustrations, excitements, ups, downs, ... all of ... [Read more...]

useR! 2009 acceptance: presenting influence.ME

April 23, 2009 | 0 Comments

The organizing committee of the useR! 2009 conference just informed me, that my submission for presenting my extension package influence.ME, has been accepted! Influence.ME is a new R package that I’m currently developing, with the indispensable ... [Read more...]

Boston Marathon 2009

April 22, 2009 | 0 Comments

Monday was the 113th Boston Marathon. Just like in 2007 (and having skipped last year as I ran London the week before), I went as part of a group of local running friends. We once again had a blast---Boston on Marathon weekend is a real spectacle. Lots of people, lots of ... [Read more...]

Visulization of correlation matrix 2

April 22, 2009 | 0 Comments

The plot.corr() function was updated, now it can1. Add colorkey and text labels more flexible.2. Reorder the variables using PCA or hierarchical clustering methods.3. Excellent in details.4. Other.What's more, I found a new method to display correlatio... [Read more...]

R 2.9.0 is Out!

April 21, 2009 | 0 Comments

The new R 2.9.0 is out! Get it here. If you like take a look at these posts for some miscellaneous advices to make the upgrade easier.
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