scig_feature_extraction
=======================

The Fourier and HOS feature extractors in this package are ported from
https://github.com/navarmn/feature_extraction_signal (Python; default branch
`master`; the source repo does not ship a LICENSE file as of 2026-05-19).
The SCM (Structural Co-occurrence Matrix) extractor is re-implemented in
this repo from Xu et al. 2021 Applied Soft Computing 101, 107053
Section 2.2 and the SCM reference cited therein (Ramalho et al.).

Both source repos (feature_extraction_signal and Wind_turbine_failure_prediction)
are authored by Navar M. M. Nascimento, who is also the maintainer of
wind-turbine-ssl. The maintainer explicitly re-licenses the vendored
code under the same terms as wind-turbine-ssl (MIT for code; the dataset
is CC BY 4.0 separately).

A follow-up task in docs/maintainer-next-steps.md tracks adding an
explicit LICENSE file to the source repo on GitHub to formalise this
permission upstream.
