NEWS
wnpmle 0.1.3 (2026-10-08)
- The censoring-corrected sandwich variance (
se = "sandwich_adj", the
default) now follows the formula in Bellach and Kosorok (2026, Appendix B.3)
exactly. Two coding issues in the correction term were fixed: the correction
is now subtracted from the subject-wise scores (which are on the negative
log-likelihood scale), and two internal matrices are now filled in the right
order. In the settings checked, the effect on the standard errors was in the
fourth decimal place or smaller.
- Subject-wise scores and the censoring correction are now computed with TMB
(new templates in
inst/tmb/), which makes se = "sandwich" and
se = "sandwich_adj" much faster for larger data sets.
- Compiled TMB templates are now kept between R sessions (in
tools::R_user_dir("wnpmle", "cache")), so they are compiled only once per
installed version instead of once per session. A different folder can be set
with options(wnpmle.cache_dir = ...) or the environment variable
WNPMLE_CACHE_DIR, e.g. to share one compiled copy between cluster jobs.
- The meat of the sandwich is computed with
crossprod(), which uses much less
memory.
- New example data
readmission_prep(): hospital readmissions of 403
colorectal cancer patients with death as terminal event (Gonzalez et al.,
2005; copy of the readmission data from frailtypack). The vignette now uses
these data as its main example, including model selection with
plot_loglik(). The bladder quick start now compares the Ghosh-Lin fit
with the estimates reported by Ghosh and Lin (2002).
predict() now handles factor covariates (same coding as in the fit), and
uses the correct limit log(1 + x) for the Box-Cox model at rho = 0.summary() now returns an object that is printed once (before, printing the
result of summary() showed the coefficients twice).plot_loglik(): wider default PDF (width, height arguments), titles no
longer overlap, and the points rho = 1 and r = 1 are labelled.- Documentation:
"sandwich_adj" is listed as the default for se; references now
cite the arXiv preprint of Bellach and Kosorok (2026) with its DOI, and DOIs
were added to all references where available.
wnpmle 0.1.2 (2026-06-18)