October 2010

Random generators for parallel processing

October 28, 2010 | xi'an

Given the growing interest in parallel processing through GPUs or multiple processors, there is a clear need for a proper use of (uniform) random number generators in this environment. We were discussing the issue yesterday with Jean-Michel Marin and briefly looked at a few solutions: given p parallel streams/threads/...
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R Cookbook

October 27, 2010 | David Smith

Following up on the successful "R in a Nutshell", O'Reilly has just published a new book on R, The R Cookbook, by Paul Teetor. Here's the description: Perform data analysis with R quickly and efficiently using the task-oriented recipes in this cookbook. The R language and environment include everything necessary ... [Read more...]

InfoWorld: R a programming language "on the rise"

October 27, 2010 | David Smith

In an article looking at once-niche programming languages that are now being deployed in businesses, R is named as one of 7 programming languages on the rise: R is another Swiss Army Knife of numerical and statistical routines for hacking through the big data sets -- collections big enough that it ... [Read more...]

A million ? what are the odds…

October 27, 2010 | arthur charpentier

50 days ago, I published a post, here, on forecasting techniques. I was wondering what could be the probability to have, by the end of this year, one million pages viewed (from Google Analytics) on this blog. Well, initially, it was on my blog at t... [Read more...]

R references for handling Big data

October 27, 2010 | Larry D'Agostino

The Dallas R User Group had a meeting over the weekend.  One of the discussions is the memory limitations with R.  This is a common subject among the R community and R User Groups.  There has been a lot of strides recently in allowing R ... [Read more...]

Where People Share Links About NYC

October 27, 2010 | Drew Conway

Last week I participated in bit.ly’s fourth hackabit hack-a-thon, which is a wonderful opportunity for NYC area hackers to get together, eat pizza, drink energy drinks, and stay up late hacking with some of the best data geeks around. I was lucky enough to saddle up next to ...
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A use for tables (really)

October 27, 2010 | Andrew Gelman

After our recent discussion of semigraphic displays, Jay Ulfelder sent along a semigraphic table from his recent book. He notes, "When countries are the units of analysis, it's nice that you can use three-letter codes, so all the proper names.... [Read more...]

The class of Donald Bradman

October 26, 2010 | prasoonsharma

This post is a response to a comment on Cricinfo on Donald Bradman about his inclusion in All Time World XI. AK47_pk said,"7 innings against westindies, 7 against south afriqa, 5 against india nd 61 against englnd(so basicly he only played against... [Read more...]

Handling Large Datasets in R

October 26, 2010 | Quantitative Finance Collector

Handling large dataset in R, especially CSV data, was briefly discussed before at Excellent free CSV splitter and Handling Large CSV Files in R. My file at that time was around 2GB with 30 million number of rows and 8 columns. Recently I started to collect and analyze US corporate bonds tick ... [Read more...]

R nominated for best open-source project in New Zealand

October 26, 2010 | David Smith

The R project, born in New Zealand in 1993, has been nominated as the best open-source project in the New Zealand Open-Source Awards 2010. R's co-creator Ross Ihaka talks about the project in this article by the New Zealand Herald: Ross Ihaka from the University of Auckland started developing R 20 years ago, ... [Read more...]

Example 8.11: violin plots

October 26, 2010 | Nick Horton

We've continued to get useful feedback and ideas from our posts on the combination dotplot/boxplot and other ways to craft similar displays. Another notion is the violin plot, which combines a boxplot and a (doubled) kernel density plot. While the ba...
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Upcoming R courses from Statistics.com

October 26, 2010 | David Smith

The online training provider Statistics.com has three great courses based on R coming up in the next few months: Nov. 5 - Dec. 3: "Graphics in R," with Paul Murrell Nov. 20 – Dec. 18: Support Vector Machines in R" with Dr. Lutz Hamel Dec. 17 - Jan. 22: "Geostatistics in R" with Prof. David Unwin ... [Read more...]

Different results from different software

October 26, 2010 | Rob J Hyndman

I’ve had a few questions on this topic lately. Here is an email received today: I use Eviews to estimate time series, but I have been checking out R recently, and your Forecast package. I cannot understand why 2 similar equations in Eviews and R are giving different estimated output. ... [Read more...]

Algorithmic Trading with IBrokers

October 25, 2010 | Joshua Ulrich

Kyle Matoba is a Finance PhD student at the UCLA Anderson School of Management.  He gave a presentation on Algorithmic Trading with R and IBrokers at a recent meeting of the Los Angeles R User Group.  The discussion of IBrokers begins near th...
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The language of Statistics

October 25, 2010 | David Smith

R is the lingua franca of Statistics: R code and R packages is the means by which statisticians communicate ideas and methods for statistical analysis. The reasons why are discussed in this article, but it also begs the question: what's wrong with the spoken or written word? How Statistics and ... [Read more...]
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