Beyond mirkwood: Enhancing SED Modeling with Conformal Predictions
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866916120856887296 |
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| author | Gilda, Sankalp |
| author_facet | Gilda, Sankalp |
| contents | Traditional spectral energy distribution (SED) fitting techniques face uncertainties due to assumptions in star formation histories and dust attenuation curves. We propose an advanced machine learning-based approach that enhances flexibility and uncertainty quantification in SED fitting. Unlike the fixed NGBoost model used in mirkwood, our approach allows for any sklearn-compatible model, including deterministic models. We incorporate conformalized quantile regression to convert point predictions into error bars, enhancing interpretability and reliability. Using CatBoost as the base predictor, we compare results with and without conformal prediction, demonstrating improved performance using metrics such as coverage and interval width. Our method offers a more versatile and accurate tool for deriving galaxy physical properties from observational data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_14212 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Beyond mirkwood: Enhancing SED Modeling with Conformal Predictions Gilda, Sankalp Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Machine Learning Traditional spectral energy distribution (SED) fitting techniques face uncertainties due to assumptions in star formation histories and dust attenuation curves. We propose an advanced machine learning-based approach that enhances flexibility and uncertainty quantification in SED fitting. Unlike the fixed NGBoost model used in mirkwood, our approach allows for any sklearn-compatible model, including deterministic models. We incorporate conformalized quantile regression to convert point predictions into error bars, enhancing interpretability and reliability. Using CatBoost as the base predictor, we compare results with and without conformal prediction, demonstrating improved performance using metrics such as coverage and interval width. Our method offers a more versatile and accurate tool for deriving galaxy physical properties from observational data. |
| title | Beyond mirkwood: Enhancing SED Modeling with Conformal Predictions |
| topic | Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Machine Learning |
| url | https://arxiv.org/abs/2312.14212 |