rogerbivand.bsky.social
@rogerbivand.bsky.social
Reposted
An #RStats blog entry by Heather Turner explains the new Research Software Maintenance Fund grant.

blog.r-project.org/2025/12/17/r...
RSMF: Enabling the Next Generation of Contributors to R - The R Blog
blog.r-project.org
December 18, 2025 at 8:46 AM
Recalling Brody et al. (2000), doi.org/10.1016/S014..., accessible with discussion and response to discussants at johnsnow.matrix.msu.edu/work.php/id=..., I suspect the two cases are not as aligned as they seem. Briefly, Snow drew the map to prove his point, he already knew the answer.
Redirecting
doi.org
November 18, 2025 at 7:24 PM
Reposted
Yes, it's a QR decomposition, a bespoke one modified by Ross from LINPACK fortran code.

The key difference from LINPACK (in src/appl/dqrdc2.f) is that it pivots only when really needed, so that computing sequential "this beta adjusted for the previous ones" is more straightforward.
June 20, 2025 at 3:45 AM
Reposted
this is my very favourite comment from the R code base: github.com/r-devel/r-sv... (this more than 28 years ago - I didn't feel like doing the archaeology to trace the code back through a file reorganization that was done in 1998 ...)
June 20, 2025 at 1:08 PM