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Tabular Foundation Models for the Estimation of Probabilistic Quasar Photometric Redshifts in S-PLUS

  • Authors: Raquel R. Valença, Lilianne Nakazono, Rafael Izbicki, Marco Henrique de Almeida Inácio, Bruno Marcondes e Resende, Maycon Jorge Deláqua da Silva, Kiana Coimbra Buin Lins, Natanael M. Cardoso, Claudia Mendes de Oliveira

Raquel R. Valença et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 4.

Per-r-magnitude-bin point performance on the DR6 test set at ntrain = 121,626 for the TabPFN 2.5 and the two other best-performing methods. Top panel: per-bin RMSE. Bottom panel: per-bin outlier fraction η0.15. Shaded bands are ±1 interrepetition standard deviation across the five seeds. TabPFN 2.5 is strongest at bright magnitudes and retains a modest advantage in the faint tail; GBM-Point is generally worse, particularly for the outlier fraction.

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