Dcurvature 0.0.4
New features
select_components(): exposes the discrete-curvature
elbow criterion (adaptive m* from first/second-order
operators, plus the extended m** with a minimum
cumulative-variance threshold tau) as a single reproducible
call. The same logic was previously only reachable inside the Shiny app,
so results reported in the accompanying article can now be reproduced
programmatically.
Bug fixes
- Corrected the adaptive selection rule (
mstar_fn) to
follow the manuscript (Section 4) faithfully. It now operates directly
on the boundary-extended curvature (with the endpoint zeros kept) and
drops the +1 / +2+1 index offsets that made
the package return one component too many. Keeping the boundary zeros
lets the first-order operator detect a dominant first component at
m = 1. The selected m* now matches the
curvature / second-difference peak shown in the results table (and the
value reported in the article). The rule is identical across
select_components() and both bundled Shiny apps.