SpectralUnmix: A Torch-Based Regularized Non-negative Matrix Factorization
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2026
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| author | de Souza, Rafael S. Coelho, Paula P, Niranjana Chies-Santos, Ana L. Riffel, Rogério |
| author_facet | de Souza, Rafael S. Coelho, Paula P, Niranjana Chies-Santos, Ana L. Riffel, Rogério |
| contents | We present SpectralUnmix, an R package for regularized non-negative matrix factorization (NMF), implemented in torch with optional GPU acceleration. The package estimates low-rank non-negative representations through proximal-gradient updates and allows smoothness regularization along the spectral axis. As a compact demonstration, we apply the method to a subset of stellar spectra and compare the recovered NMF components with principal-component directions and representative stellar spectra. The package is released under the MIT license at \href{https://rafaelsdesouza.github.io/SpectralUnmix/}{this repository}. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_11111 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | SpectralUnmix: A Torch-Based Regularized Non-negative Matrix Factorization de Souza, Rafael S. Coelho, Paula P, Niranjana Chies-Santos, Ana L. Riffel, Rogério Instrumentation and Methods for Astrophysics We present SpectralUnmix, an R package for regularized non-negative matrix factorization (NMF), implemented in torch with optional GPU acceleration. The package estimates low-rank non-negative representations through proximal-gradient updates and allows smoothness regularization along the spectral axis. As a compact demonstration, we apply the method to a subset of stellar spectra and compare the recovered NMF components with principal-component directions and representative stellar spectra. The package is released under the MIT license at \href{https://rafaelsdesouza.github.io/SpectralUnmix/}{this repository}. |
| title | SpectralUnmix: A Torch-Based Regularized Non-negative Matrix Factorization |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2603.11111 |