Netica is a powerful, easy-to-use, complete program for working with belief networks and influence diagrams. It has an intuitive and smooth user interface for drawing the networks, and the relationships between variables may be entered as individual probabilities, in the form of equations, or learned from data files (which may be in ordinary tab-delimited form and have "missing data").
Features:
AutoNetica generates websites from Bayes nets.
Generates presentation quality graphics which can be incorporated into other documents.
Version 5.0 and later can do TAN learning of link structure from data.
Compiles belief (Bayesian) networks into a junction tree of cliques for fast probabilistic reasoning.
Extensive built-in and online help.
Utility-free sensitivity analysis.
Can generate highly customizable reports on many aspects of the Bayes net, nodes, states, CPTs, cases, findings, beliefs, sensitivity results, other inference results, etc.
Can test the performance of a network using a file of cases.
Netica will print out a confusion matrix, error rate, logarithmic and quadratic (Brier) scoring rule results, calibration table and surprise indexes for each node desired.
Can find optimal decisions for sequential decision problems (i.e., later decisions are dependent on the results of earlier ones).
Can solve influence diagrams efficiently by using clique trees.
Can learn probabilistic relations from data, even with missing data.
Provides easy graphical editing of belief networks and influence diagrams, including:
cut / paste / duplicate nodes without losing their probabilistic relation
many ways of displaying the nodes (bar graphs, meters, etc.)
links with bends to keep complex diagrams orderly
allows comments, keeps track of author, when changed, etc. for each node
unlimited levels of undo / redo
Much more...
