By 2030, we will have found approximately 10,000 exoplanets. "If it is just us... seems like an awful waste of space." -- from the movie Contact (1997) based on the book Contact by Carl Sagan. By the year 2030, it's possible that over ten th...
Monthly Archives: May 2012
Computational Journalism Server – The Way Forward
As I’ve noted here, the Computational Journalism Server “wants to be a Platform-as-a-Service (PaaS) when it grows up.” In plotting the way forward to that goal, I’ve looked at three options: Remain on openSUSE / SUSE Studio and ...
Speeding up R with Intel’s Math Kernel Library (MKL)
I did some comparisons of the generic BLAS with Intel's MKL (both sequential and parallel) on a Dell PowerEdge 610 server with dual hyperthreading 6-core 3.06GHz Xeon X5675 processors. Here are the results from an R benchmarking script (Normal R indicates the generic BLAS, sMKL is the sequential (single core Intel MKL, and pMKL is the parallel Intel MKL using...
Speeding up R with Intel’s Math Kernel Library (MKL)
I did some comparisons of the generic BLAS with Intel's MKL (both sequential and parallel) on a Dell PowerEdge 610 server with dual hyperthreading 6-core 3.06GHz Xeon X5675 processors. Here are the results from an R benchmarking script (Normal R ...
2nd round of call for chapter proposals for book Data Mining Applications with R: due by 31 May
2nd CALL FOR CHAPTERS: proposals due by 31 May 2012 Data Mining Applications with R A book to be published by Elsevier http://www.RDataMining.com/books/book2 Introduction —————— R is one of the most widely used data mining tools in scientific and business … Continue reading →
Measuring time series characteristics
A few years ago, I was working on a project where we measured various characteristics of a time series and used the information to determine what forecasting method to apply or how to cluster the time series into meaningful groups. The two main papers to come out of that project were: Wang, Smith and Hyndman (2006) Characteristic-based clustering for...
Next Kölner R User Meeting: 6 July 2012
The next Cologne R user group meeting is scheduled for 6 July 2012. All details are available on the new KölnRUG Meetup site. Please sign up if you would like to come along, and notice that there is also pub poll for the after "work" drinks. Notes fr...
A gallery view for Craigslist
As much as I love Craigslist, I sometimes find the interface a bit limited. My biggest wish? That there was an option for showing the search results as an image gallery, like eBay has. This could prove quite useful for browsing things like antiques,...
Mining for relations between nominal variables
The task today was to find what variables had significant relations with an important grouping variable in the big dataset I’ve been working with lately. The grouping variable has 3 levels, and represents different behaviours of interest. At first I … Continue reading →
Playing with knitr: Create Report with Dynamic List
Here is a little toy example using knitr, LaTeX/MiKTeX and Google Docs.Say you had a list on Google Docs (say a list of attendants) and you want to print a report with it..Then see this example using this Rnw-file and the output...make the tex-file wit...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
