Introduction ,
Links ,
Papers ,
Software ,
Concepts ,
Books ,
Applications .
Bayesian network
by Wolfgang Garn
( Last update: 16.09.2007)
Introduction
A Bayesian Network is an acyclic directed weighted
graph. The weights of the nodes are conditional probabilities.
Bayesian Networks are also known under the following names:
bayesian belief networks, belief networks, causal probabilistic
networks or knowledge maps.
Links
- Bayesian Networks (BAN) -
Presentation and introduction of BAN.
WWW,
here:04,
here:05,
here:06,
(29.03.2006)
- Bayesian Belief Nets -
Several introductions, presentations and articles
WWW,
here:Learning Belief Nets, (29.03.2006)
- Kevin Murphy - A Brief Introduction to Graphical Models and Bayesian Networks
WWW.
(1998)
- Introduction to Bayesian Networks -
An Introduction to Bayesian Networks and their Contemporary Applications
WWW
(14.12.2006)
- Bayesian Network Repository -
Collection of BN examples
WWW
Papers
- Obtaining the correspondence between Bayesian and
Neural Networks -
A. Stassopoulou & M. Petrou
WWW,
here.
(29.03.2006)
- An introduction to graphical models -
Kevin Murphy
WWW,
here, (2001)
- Bayesian Networks Without Tears -
Eugene Charniak
WWW,
here, (1991)
-
Dynamic Bayesian Networks for Information Fusion with Applicaqtion to Human-Computer
Interfaces -
Vladimir Pavlovic: PhD Thesis
WWW.
here, (1999)
-
Dynamic Bayesian Networks: A State of the Art
V. Mihajlovic and M. Petkovic
WWW.
here, (2001)
-
An Introduction to Bayesian and Dempster-Shafer Data Fusion -
D. Koks and S. Challa.
WWW.
-
Learning Dynamic Bayesian Networks -
Z. Ghahramani
WWW
(1998).
-
A Dynamic Bayesian Network Approach to Figure Tracking -
V. Pavlovic, K. Murphy, et al
WWW
(1999).
-
The Centre of Gravity Network Effects Tool: Probabilistic: Modelling for Operational Planning -
Lucia Falzon and Jayson Priest
Australian DSTO,
European Journal of OR
(2004).
-
Generating Conditional Probabilities for Bayesian Networks: Easing the Knowledge Acquisition Problem -
Balaram Das
Citebase
(2004).
Surrey Papers
- Agent-Based Parsimonious Decision Support Paradigm Employing Bayesian Belief Networks
-
Panos Louvieris, Andreas Gregoriades, et al
WWW abstract.
(July 2005)
- Smart Decision Support System Using Parsimonious Information Fusion -
Panos Louvieris, Natasha Mashanovich, et al
WWW abstract.
(July 2005)
Software
|
Name | free/commercial | WWW | Comments |
|
Bayes Net Toolbox for Matlab | free, but requires Matlab | WWW |
|
Bayesia | commercial | WWW |
|
BNet | | WWW |
|
Dezide | | WWW |
|
GeNIe & SMILE | | WWW |
|
Hugin | commercial | WWW |
based on Java |
|
MSBNx | | WWW |
2001, simple, future uncertain |
|
Netica | | WWW |
|
OpenBayes | | WWW |
|
SamIam | | WWW |
Important Concepts
- Bayesian node -
represents a random variable, latent variable or hypothesis
WWW
- Conditional Probability -
P(E|F)...the probability that event E occures
given that F has occured.
WWW
- Bayes' formula -
P(E) = P(E|F) P(F) + P(E|¬F)(1-P(F))
WWW
- Inference -
Computation of conditional probability given some
evidence (probabilities in other nodes).
WWW
- Learning -
"To learn means to adjust the network and/or probabilities such
that it describes the observed data better."
WWW
- Hybrid Bayesian Network -
A Bayesian Network with discrete and continuous variables (CPT, CPD).
WWW
Books
- Jensen, F. V., 2001, Bayesian Networks and Decision Graphs.
Springer Verlag - best introduction book
Amazon,
Amazon UK.
- Pearl, J., 2000, Causality: Models, Reasoning, and Inference.
Cambridge University Press - for causal directed acyclic graphs
Amazon UK.
- Cowell, et al, 1999, Probabilistic Networks and Expert Systems.
Springer Verlag - emphasises on exact inference
Amazon UK.
- Kevin Murphy, 2002 Dynamic Bayesian Networks: Representation, Inference and Learning.
University of California, Berkeley - PhD Thesis
PhD Thesis.
- see also
Wikipedia
Applications
Bayesian Networks have been applied to
heuristic search,
medical diagnosis,
map learning,
language understanding and military decisions.
Miscellaneous
- 2D area into a 3D probability surface.
The following movie shows how to map a 2D triangle into a 3D probability space. Download movie.
- Dempster-Shafer theory:
Wiki
- Dezert-Smarandache Theory of Plausible and Paradoxical Reasoning (DSmT):
book preview (2004) ,
book (2006)