This paper establishes the rigorous mathematical foundation for orbital continuum removal and non-negative least squares library unmixing against a public laboratory spectral library. Blind cross-validation against ground-truth field spectroscopy is reported in the paper, without reliance on black-box heuristics.
Key findings
- Automated hull continuum removal preserves the diagnostic doublet separation across the shortwave infrared window.
- Alunite (2.165 µm) and well-crystallised kaolinite (2.208 µm) are cleanly separated under open archive data with zero false-positive bleed into adjacent phyllosilicate domains.
- Leave-one-region-out cross-validation across independent geological terranes supports the score the platform reports.
Read the paper
The full paper, with methodology and citation details, lives on its paper page and is archived with a DOI: https://doi.org/10.5281/zenodo.22131995.