Articles by Avraham Adler

R-3.1.0 + OpenBLAS Speed Comparisons

April 20, 2014 | Avraham Adler

With the recent release of R-3.1.0, and the near-recent release of OpenBLAS 0.29rc2, it was time to recompile Rblas.dll and do some new speed tests. The test computer has an Intel i7-2600K, overclocked to 4.6Ghz with 16GB RAM and runs Windows 7 Home Premium 64bit. For the first ... [Read more...]

Condorcet ranking and Rcpp

March 13, 2014 | Avraham Adler

I had the opportunity recently to be asked to join a committee which had to select candidates for an upcoming election. In the candidate selection phase, the members of the committee use preferential voting to rank the candidates. Prior to the meeting, I did some research on preferential voting systems. ... [Read more...]

R programming tips

January 15, 2014 | Avraham Adler

After reinventing the wheel a few times, I decided it would be a good idea to keep a list of programming tips or tricks that I find useful, so I started a static page here to keep these tips. It will begin rather haphazardly, but if it grows, I will ... [Read more...]

An OpenBLAS-based Rblas for Windows 64

October 22, 2013 | Avraham Adler

One of the more important pieces of software that powers R is its BLAS, which stands for Basic Linear Algebra Subprograms. This is the suite of programs which, as its name implies, performs basic linear algebra routines such as vector copying, scaling and dot products; linear combinations; and matrix multiplication. ... [Read more...]

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