Asymptotic Model Selection for Directed Networks with Hidden Variables
Generate an AI Snapshot to get a quick, structured summary of this paper.
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
The Bayesian Information Criterion (BIC), an asymptotic approximation for tile marginal likelihood, is extended to Bayesian networks with hidden variables and it is argued that the dimension of a Bayesian uetwork withhidden variables is tile rank of the Jacobian matrix of the transformation between the parameters of the network and the parametersof the observable variables.
Abstract
We extend the Bayesian Information Criterion (BIC), an asymptotic approximation for the marginal likelihood, to Bayesian networks with hidden variables. This approximation can be used to select models given large samples of data. The standard BIC as well as our extension punishes the complexity of a model according to the dimension of its parameters. We argue that the dimension of a Bayesian network with hidden variables is the rank of the Jacobian matrix of the transformation between the parameters of the network and the parameters of the observable variables. We compute the dimensions of several networks including the naive Bayes model with a hidden root node.This manuscript was previously published in The Proceedings of the Twelfth Conference on Uncertainty in Artificial Intelligence, 1996, Morgan Kaufmann.
