NEWS
msPCA 0.4.0 (2026-05-22)
- Renamed hyperparameters controlling truncated power method restart budgets for clearer and more consistent API naming.
- Documentation polish across function docs and package materials.
- Removed
pairwise_correlation() and orthogonality_violation() and replaced them with a unified feasibility_violation_off() helper for feasibility diagnostics across constraint types.
msPCA 0.3.0 (2026-05-15)
- Improved scalability of
mspca() and tpw() through algorithmic and implementation optimizations.
- Function
mspca() now accepts a new hyper-parameter minRestartTPM that limits the number of random restarts for the truncated power method after the first outer iteration
- Improved scaling of the penalty parameters for the case of zero-correlation constraints
- Fixed incorrect acronym for truncated power method (TPW <- TPM)
msPCA 0.2.0 (2026-01-12)
- Added support for no-correlation constraints between PCs as well as orthogonality constraints. User chooses between orthogonality and uncorrelatedness constraints via the
feasibilityConstraintType parameter to msPCA().
- Renamed return field from
orthogonality_violation to feasibility_violation to support both constraint types.
- Renamed function
feasibility_violation() as orthogonality_violation() to be more explicit
- Created function
pairwise_correlation()
- Added warning message when no feasible solution is found
msPCA 0.1.0 (2025-12-09)