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Monthly Archives: July 2011
Improving data quality with deducorrect
Does your raw numerical data suffer from typos? sign errors? variable swaps? rounding errors? You may be able to fix all that with the deducorrect package. Today, we (that is Edwin de Jonge, Sander Scholtus and myself) uploaded the, 1.0-0 … Continue reading →
Improving data quality with deducorrect
Does your raw numerical data suffer from typos? sign errors? variable swaps? rounding errors? You may be able to fix all that with the deducorrect package. Today, we (that is Edwin de Jonge, Sander Scholtus and myself) uploaded the, 1.0-0 release to CR...
Low-hanging R Optimizations on Ubuntu
A friend of mine brought my attention recently to the fact that the default R install is way to generic and thus sub-optimal. While I didn’t go all the way rebuilding everything from scratch, I did find a few cheap steps one can do to help things a little. Simply install the libatlas3gf-base package. That’s 
The stringr package just turned 0.5
(Re-posted from a post made by Hadley Wickham to the mailing list) # About the stringr package Strings are not glamorous, high-profile components of R, but they do play a big role in many data cleaning and preparations tasks. R provides a solid set of string operations, but because they have grown organically over time, they can be inconsistent...
Weighting and prediction in sample surveys
A couple years ago Rod Little was invited to write an article for the diamond jubilee of the Calcutta Statistical Association Bulletin. His article was published with discussions from Danny Pfefferman, J. N. K. Rao, Don Rubin, and myself. Here it all is.I'll paste my discussion below, but it's worth reading the others' perspectives too. Especially...
A third year of entries!
Contrary to previous reports, we started blogging after our book was published, with the conceit that we were adding examples to the book. Today marks the second anniversary of the book's appearance and of the blog. To celebrate, we're turning over o...
RcppArmadillo 0.2.25
Following a series of pre-releases, Armadillo version 2.0.0 was announced by Conrad Sanderson earlier in the week. As it happens, it contained another minor build regression so version 2.0.1 followed the next day. We created versions 0.2.24 and 0.2...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
