Monthly Archives: April 2011

Historical Sources of Bond Returns

April 11, 2011
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Historical Sources of Bond Returns

As promised in Monitoring Sources of Bond Return, we can show more history if we use CPI instead of expected inflation (from the TIP inflation breakeven yield).  Here are the results with history back to 1953. From TimelyPortfolio However, mo...

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Monday Links: 23andMe, RStudio, PacBio+Galaxy, Data Science One-Liners, Post-Linkage RFA, SSH

April 11, 2011
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Monday Links: 23andMe, RStudio, PacBio+Galaxy, Data Science One-Liners, Post-Linkage RFA, SSH

Lately I haven't written as many full length posts as usual, but here's a quick roundup of a few links I've shared on Twitter (@genetics_blog) over the last week:First, 23andMe is having a big DNA Day Sale ($108) for the kit + 1 year of their personal ...

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Tumblr Likes

April 11, 2011
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Tumblr Likes

Look at just the first digit and the number of digits. science: 32914, 11566, 4989, 3743, 968, 814, 673, 482, 286, 2811 black and white: 1694, 1167, 1108, 988, 919, 639, 596, 591, 580, 544 lol: 22627, 18100, 17688, 14374, 13459, 12045, 4711, 3779, 36...

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Article about plyr published in JSS, and the citation was added to the new plyr (version 1.5)

April 11, 2011
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Article about plyr published in JSS, and the citation was added to the new plyr (version 1.5)

The plyr package (by Hadley Wickham) is one of the few R packages for which I can claim to have used for all of my statistical projects. So whenever a new version of plyr comes out I tend to be excited about it (as was when version 1.2 came out with support for parallel processing)

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RStudio Beta 2 (v0.93)

April 11, 2011
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RStudio Beta 2 (v0.93)

RStudio Beta 2 (v0.93) is available for download today. We’ve gotten incredibly helpful input from the R community and this release reflects a lot of that feedback. The release notes have the full details on what’s new. Some of the highlights include: Source Editor Enhancements Highlight all instances of selected text Insert spaces for tabs (soft-tabs)

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R and Java – JRI using eclipse on 64 bit machines

April 11, 2011
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R and Java – JRI using eclipse on 64 bit machines

Update – Check out the new RJava Eclipse Plugin.The steps to install rjava on a 64 bit machine is not very different from installing it on a 32 bit machine. however, here are the exact steps. 1. Install 64 bit java.2. Install R 2.12.X3. Start R and install the rjava package using the package installer.4.… Read More »

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Vienna, May 2011 – Advanced Topics in Financial Econometrics Lectures

April 11, 2011
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(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave,...

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Speeding tickets for R and Stata

April 10, 2011
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Speeding tickets for R and Stata

How fast is R? Is it as fast in executing routines as the other off-the-shelf software, such as Stata? After some comparative experimentation, I found Stata to be 5 to 8  times faster than R. For me, speed has not been a concern in the past. I had used R with smaller datasets...

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Video Tutorial on IV Regression

April 10, 2011
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Video Tutorial on IV Regression

Update: I am working on a better augmentation of the current IV regression functions (specifically ivreg() in AER) in R. I will post a link here to my new method/function for IV regression when I finish debugging the code.Update 2: [15 Ma...

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Quality comparison of floating-point maths libraries

April 10, 2011
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Quality comparison of floating-point maths libraries

What is the best way to compare the quality of floating-point math libraries (e.g., sin, cos and log)? The traditional approach for evaluating the quality of an algorithm implementing a mathematical function is based on mathematics; methods have been developed to calculate the maximum error between the calculated and the actual value. The answer produced

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