Theory-independent limits on correlations from generalised Bayesian networks

Understand

Bayesian networks provide a powerful tool for reasoning about probabilistic causation, used in many areas of science.

• They are, however, intrinsically classical.
• In particular, Bayesian networks naturally yield the Bell inequalities.
• Inspired by this connection, we generalise the formalism of classical Bayesian networks in order to investigate non-classical correlations in arbitrary causal structures.