3 papers
astro-ph.CO2025
The Wrath of KAN: Enabling Fast, Accurate, and Transparent Emulation of the Global 21 cm Cosmology Signal
J. Dorigo Jones, B. Reyes, D. Rapetti +3
Based on the Kolmogorov-Arnold Network (KAN), we present a novel emulator of the global 21 cm cosmology signal, , that provides extremely fast training speed whil…
astro-ph.CO2024
: A Fast Memory-based Emulator of the Global 21 cm Signal with Unprecedented Accuracy
J. Dorigo Jones, S. M. Bahauddin, D. Rapetti +2
Neural network (NN) emulators of the global 21 cm signal need emulation error much less than the observational noise in order to be used to perform unbiased Bayesian parameter infe…
astro-ph.CO2023
Validating posteriors obtained by an emulator when jointly-fitting mock data of the global 21-cm signal and high-z galaxy UV luminosity function
J. Dorigo Jones, D. Rapetti, J. Mirocha +3
Although neural-network-based emulators enable efficient parameter estimation in 21-cm cosmology, the accuracy of such constraints is poorly understood. We employ nested sampling t…