Examples of the recovered mass and X_c of two benchmark models (white stars: input; red stars: best model predicted by NN). Although the period spacings of trapped modes are more difficult to predict (bottom panel), the inclusion of the photospheric observables yields accurate predictions of the mass and X_c. Middle panels: sampling density is increased in the parameter space where the predicted photospheric observables comply with those of the input model (see Sect. 3). Model 1: (M_⋆, X_c, Z, f_ov, D₀, f_rot) = (1.35 M_⊙, 0.515, 0.014, 0.0225, 1 cm² s⁻¹, 0.7457 d⁻¹). Model 2: (M_⋆, X_c, Z, f_ov, D₀, f_rot) = (1.95 M_⊙, 0.08, 0.014, 0.0225, 1 cm² s⁻¹, 0.0449 d⁻¹). Typical uncertainties on ΔP are of the order of several tens of seconds.