New Release - HUGIN 7.5
Today we
are releasing a new version of the HUGIN software (v7.5). The main new features
of this release are new algorithms for learning the structure of a Bayesian
network from a database of cases in the HUGIN Graphical User Interface (GUI)
and a new HUGIN Web Service Application Programming Interface (API) to the
HUGIN Decision Engine.
HUGIN Graphical User Interface
v7.5
The HUGIN
Graphical User Interface has been improved with various new features. This
includes:
- The Learning Wizard now
includes two new algorithms for learning the structure of a Bayesian
network from a database of cases: a greedy search-and-score method and the
Pearl & Rebane algorithm. The greedy search-and-score
method constructs a Bayesian network by a greedy search through the space
of possible network structures. It is possible to use either the BIC or
AIC score to score candidate structures and to specify an upper limit on
the number of parents of each node in the graph. The Pearl & Rebane algorithm constructs a poly-tree structure from
the database of cases.
- The Learning Wizard has a new
option to add no-links constraints to a selected set of nodes.
- The Analysis Wizard now
supports the use of function nodes. This allows the user to process a
large number of cases and evaluate the value of function nodes in each
case.
- In the Sensitivity Set Graph of
the Parameter Sensitivity Wizard it is now possible to open a table to see
the sensitivity values associated with each node. In the Parameter
Sensitivity Wizard there is also a new option for saving the sensitivity
network panel as PDF.
- The Evidence Sensitivity Dialog
has improved support for performing "what-if" analysis.
- The user now has the option to
define her own language file.
- The Import Information function
now enables the user to import state labels and values from a network
specification file.
- When a node of a Class is
selected in Run-mode, the status bar shows the entropy for discrete chance
nodes, the entropy, mean and variance of discrete numeric chance nodes and
the mean and variance of continuous chance nodes.
- The simulation of function
nodes has been added to the Generate Simulated Cases dialog.
Finally,
efforts have been put into improving the performance of the HUGIN Graphical
User Interface.
HUGIN Decision Engine v7.5
The HUGIN
Decision Engine has been extended with the following features:
- The performance of table
operations involving discrete nodes only has been improved. This has led to improved performance of
inference on many networks.
- Function and utility nodes can
now be used as inputs and outputs of classes in OOBNs.
- A new HUGIN Web Service API is
introduced including a set of pre-defined widgets to support easy
deployment of HUGIN models using JavaScript. Examples can be found at: http://www.hugin.com/solutions/fraud-detection-management/online-demonstration
and http://camvac.hugin.dk
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