SAM Changelog
v1.3
Bug Fixes
- Fixed KKT validation: inactive groups are now checked after every
Level 1 iteration, not only when not converged.
- Fixed
grpSVM ya_idx active-set logic that
only checked the first element of each group instead of all
p coefficients.
- Replaced
assert() with runtime error checks in
grplasso, grpLR, and grpPR
(asserts are compiled out under -DNDEBUG).
- Added NULL checks for all
malloc calls in
grpSVM.
New Features
dfmax parameter for early stopping when the number of
non-zero groups exceeds a threshold (all four families).verbose parameter to print per-lambda iteration
info.- Deviance-ratio and deviance-change early stopping
(
dev.ratio.thr, dev.change.thr) for samQL,
samLL, and samEL.
- Unified
sam() entry point dispatching by
family argument (R and Python).
coef() S3 methods for all four model classes.solver = "actgd" option for samQL (group active
gradient descent with strong-rule screening, L1 only).type.gaussian option for samQL ("naive" /
"covariance" / "auto").runtime field on fitted objects (R:
$runtime, Python: .runtime_seconds).
Python Wrapper
- New
pysam-sam Python package calling the same C++ core
via ctypes.
- Pure-Python spline basis (no R dependency at runtime).
- Full API parity:
samLL, samHL,
samEL, samQL + predict functions.
- Cached
wXX products and no-op
update_auxiliary for linear objective.
- C API deduplication via
c_api_utils.h.
Code Quality
- Removed redundant
fit$nkots field from R wrappers.
- Removed unused
fit$XX (full design matrix) from samQL
output.
- Removed unused
V(d) declarations in grpLR
and grpPR.
- Extracted shared
.sam_print_path() /
.sam_plot_path() helpers.
- Removed unused
scipy dependency from Python
package.
- Fixed legacy
PICASSO_SOLVER_PARAMS_H header guard.
- Added root
.gitignore.
- Added test coverage for samHL and samEL.
v1.2
- Initial CRAN release with samQL, samLL, samEL, samHL.