This package defines nodes, updates and demos specific to reactive implementations of Active Inference.

Install Julia

In order to install the Julia language (v1.10.4), follow the platform-specific instructions at https://julialang.org/downloads/

Install Jupyter Notebook

Jupyter notebook is a framework for running Julia scripts (among other languages). It is well-suited for showing demo applications and interactive experimentation. In order to install Jupyter Notebook, follow the instructions at https://jupyter.readthedocs.io/en/latest/install.html

Install required packages

The simulation notebooks require several external packages. To install them, open Julia

$ julia

and enter the package prompt by typing a closing bracket

julia> ]

Next, activate the virtual environment

(v1.10) pkg> activate .

and instantiate the required packages

(RxAIF) pkg> instantiate

This will download and install the required packages in the virtual environment named LAIF.

Run the demos

Exit Julia, navigate to the root directory and start a Jupyter server

~/RxAIF$ jupyter notebook

A browser window should open, and you can select the demo you wish to run.

References

• Koudahl, van de Laar & De Vries (2023). Realising Synthetic Active Inference Agents, Part I: Epistemic Objectives and Graphical Specification Language. arXiv preprint arXiv:2306.08014.
• van de Laar, Koudahl, & De Vries (2024). Realizing Synthetic Active Inference Agents, Part II: Variational Message Updates. Neural Computation.

License

MIT License, Copyright (c) 2024 BIASlab http://biaslab.org