Sometimes it is fun to just look at annual returns, especially as the financial world has shifted its focus to microseconds in a world of inconceivable macro imbalances. St. Louis Fed (USREC) offers a binary state of the economy with 1=recession ...
Monthly Archives: June 2011
Kaggle Competition Walkthrough: Wrapup
The Kaggle Don't Overfit competition is over, and I took 11th place! Additionally, I tied with tks for contributing the most to the forum, so thanks to everyone who voted for me! I voted for tks, and I'm very happy to share the prize with him, as most...
R in a nutshell
I got this book as a reference for my work with R and do like it. Just after browsing the chapters I already found some useful hints about loading and manipulating data, e.g., loading of fixed-width data files!
Day #54 Major bugfix
It seems that Rserve works in a 1 byte charactersystem. This was giving us strange results. When I read in data from KNIME with strange characters like µ the errors began. Every time I used the character “µ”, my output in Rserve would be:...
New version of analogue (0.7-0)
Last week I pushed an update of my analogue package to CRAN. The last release (0.6-23) was on CRAN sometime in Mar 2010 so an update was well overdue. This (0.7-0) is a major update to analogue containing lots of … Continue reading →
Drawing Grids in R
Here's an example of how to draw a grid in R and how to fill it.I did use the grid-package and its functions for displaying species cover values at squares of a recording frame...Read more »
Day #54 Major bugfix
It seems that Rserve works in a 1 byte charactersystem. This was giving us strange results. When I read in data from KNIME with strange characters like µ the errors began. Every time I used the character “µ”, my output in Rserve would be:...
Using R in Excel
Got to know a very cool tool to use R in Excel named RExcel, basically it provides an integration solution such that users can get data, run command in Excel the same way as in R, which is presumably good and convenient to present results to your coll...
Reduce Memory Use for Large Datasets
One key limiting factor for automated text classification is memory consumption. As you accumulate more news articles, bills, and legal opinions, the term-document matrices used to represent the data grow quickly. RTextTools provides two algorithms, support vector machines and maximum entropy, that can handle large datasets with very little memory. Luckily, these two algorithms tend to be the most...
Minor update to Vegan (1.17-10)
I overlooked blogging about this at the time, but Jari released a minor update to our Vegan package to fix a few issues following release of R 2.13-0. As far as the user is concerned, this mainly affects capscale(). metaMDSrotate(), … Continue reading →
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
