Bayesian networksA Bayesian network

Bayesian networks
A Bayesian network, belief network or directed acyclic graphical model is a probabilistic graphical model that
represents a set of random variables and their conditional independencies via a directed acyclic graph (DAG). For
example, a Bayesian network could represent the probabilistic relationships between diseases and symptoms. Given
symptoms, the network can be used to compute the probabilities of the presence of various diseases. Efficient
algorithms exist that perform inference and learning.