no code implementations • 22 Feb 2024 • Théophile Champion, Howard Bowman, Dimitrije Marković, Marek Grześ
In the second setting, a justification of the root expected free energy definition is known, but this setting only accounts for two formulations, i. e., the risk over states plus ambiguity and entropy plus expected energy formulations.
no code implementations • 2 Mar 2023 • Théophile Champion, Marek Grześ, Lisa Bonheme, Howard Bowman
The goal of this activity is to solve more complicated tasks using deep active inference.
no code implementations • 24 Jun 2022 • Théophile Champion, Marek Grześ, Howard Bowman
Active inference is a state-of-the-art framework for modelling the brain that explains a wide range of mechanisms such as habit formation, dopaminergic discharge and curiosity.
no code implementations • 14 Dec 2021 • Théophile Champion, Marek Grześ, Howard Bowman
Its root can be found in Active Inference (Friston et al., 2016; Da Costa et al., 2020; Champion et al., 2021c), a neuroscientific framework widely used for brain modelling, as well as in Monte Carlo Tree Search (Browne et al., 2012), a method broadly applied in the Reinforcement Learning literature.
no code implementations • 22 Nov 2021 • Théophile Champion, Howard Bowman, Marek Grześ
This was enabled by the development of a variational message passing approach to active inference, which enables compositional construction of Bayesian networks for active inference.
no code implementations • 22 Nov 2021 • Théophile Champion, Lancelot Da Costa, Howard Bowman, Marek Grześ
In this paper, we present an alternative framework that aims to unify tree search and active inference by casting planning as a structure learning problem.
no code implementations • 23 Apr 2021 • Théophile Champion, Marek Grześ, Howard Bowman
Since, variational message passing is a well-defined methodology for deriving Bayesian belief update equations, this paper opens the door to advanced generative models for active inference.