Inferring in Circles: Active Inference in Continuous State Space Using Hierarchical Gaussian Filtering of Sufficient Statistics. - Peter Thestrup Waade; Nace Mikus; Christoph Mathys (PKDD/ECML Workshops (1), 2021)

The generalized Hierarchical Gaussian Filter. - Lilian Aline Weber; Peter Thestrup Waade; Nicolas Legrand; Anna Hedvig Møller; Klaas Enno Stephan; Christoph Mathys (CoRR, 2023)

Phi fluctuates with surprisal: An empirical pre-study for the synthesis of the free energy principle and integrated information theory. - Christoffer Lundbak Olesen; Peter Thestrup Waade; Larissa Albantakis; Christoph Mathys (PLoS Comput. Biol., 2023)

pyhgf: A neural network library for predictive coding. - Nicolas Legrand; Lilian Aline Weber; Peter Thestrup Waade; Anna Hedvig Møller Daugaard; Mojtaba Khodadadi; Nace Mikus; Christoph Mathys (CoRR, 2024)