On March 2nd, 2004 - we have released new versions of the Hugin Graphical User Interface (v6.4) and Hugin Decision Engine (v6.2).
The main new features of this release are:
Hugin
Graphical User Interface v6.4:
A tool for performing dependence and independence analysis between nodes of a
probabilistic graphical model (i.e. Bayesian network or influence diagram) has
been included in the Hugin Graphical User Interface. This tool enables the user
to perform d-separation analysis on sets of variables given selected sets of
evidence variables. This tool is particularly useful in the knowledge
acquisition phase for validating the dependence and independence properties of
the model.
The Hugin Graphical User Interface now supports live updating. This feature -
when enabled - will make the Hugin Graphical User Interface automatically check
for available updates from our web site. Updates of the Hugin Graphical User
Interface are available from http://www.hugin.com/Products_Services/Products/Update/.
The Hugin Graphical User Interface now uses compressed hkb-files (Hugin
Knowledge Base files). Furthermore, password protected hkb-files is now an
option. Password protection of hkb-files is useful when models are distributed
as part of an end-user application.
The Hugin Graphical User Interface has been improved with various new features.
This includes:
Hugin
Decision Engine v6.2:
The Hugin Decision Engine now has support for parameter learning in
object-oriented Bayesian networks using the EM (Expectation Maximization)
algorithm. This feature enables the user to exploit the composition of an
object-oriented Bayesian network when estimating conditional probability tables
from data.
The Hugin Decision Engine now uses compressed hkb-files (Hugin Knowledge Base
files). Furthermore, password protected hkb-files is now an option. Password
protection of hkb-files is useful when models are distributed as part of an
end-user application.
The Hugin Decision Engine supports parsing a set of nodes from a file. This is,
for instance, useful for loading triangulations from a file. The Hugin Decision
Engine also supports parsing a database of cases stored in an ASCII text file.
This is useful when learning Bayesian networks from data.