New Release - Hugin 6.5
On December 7th - we are have released new versions of the
HUGIN Graphical User Interface (v6.5) and HUGIN Decision Engine (v6.3).
The main new features of this release
are:
- The data mining functionality of the HUGIN Graphical
User Interface has been improved with a number of new features.
- Improved support for object-oriented models in the
HUGIN Decision Engine and HUGIN Graphical User Interface.
- Various improvements to the HUGIN Graphical User
Interface including new features such as network layout, network
documentation, table import and export online drag & drop help
functionality to name a few.
Hugin
Graphical User Interface v6.5:
The data mining functionality of the HUGIN Graphical User Interface has been
improved with a number of new features:
- The Learning Wizard of the HUGIN Graphical User
Interface now includes a tool for determining the set of minimal resolutions
of ambiguous regions. This tool has been added because the NPC
algorithm for learning the structure of a Bayesian network model may
produce a set of ambiguous regions indicating structure uncertainties. This
tool is very helpful when an ambiguous region includes a large number of
edges.
- An algorithm for graph layout has been included in
the Learning Wizard. This
functionality is particularly useful after structure learning. If the user
has installed the program called "dot", the user interface may be
parameterized to use this program instead of its internal algorithm.
- A data analysis tool has been included in the data
acquisition step of the Learning Wizard. This tool enables the user to see
the values recorded in the data for each variable. This tool is particularly
useful when continuous variables are included in the data as it also
supports discretization.
Support functionality for
object-oriented models in the HUGIN Graphical User Interface has been extended
to include a number of new features:
- A new file name suffix (".oobn") has been
introduced in order to better distinguish network files specifying an
object-oriented model from network files specifying a flat model.
- The class of an instance node can easily be replaced
by another class with an equivalent interface.
- It is now possible to rotate the interface of an
instance node. This functionality may be useful when building time-sliced
models.
The HUGIN Graphical User Interface has
been extended with a number of features supporting the model development
process:
- Better display of the network log information and a
separate usage log window.
- Automatic documentation of models. This feature
enables the user to produce HTML documentation of a network, including the
descriptions included in the network.
- A print preview has been included in the printing
functionality.
- Online help has been improved to support
drag'N'drop.
The HUGIN Graphical User Interface has
been improved with various new features. This includes:
- An arc
between two continuous variables can be reversed.
- It is possible to perform a node absorption
operation on discrete chance nodes. This enables the user to eliminate nodes
from a model without changing the underlying probabilistic relations between
the remaining nodes of the model.
- It is now possible to both import and export tables
to flat text files. Table import is particularly useful when a table has
been generated using a different tool.
- The graph layout algorithm is also available outside
the Learning Wizard.
- Finally, efforts have been put into improving the
stability of the HUGIN Graphical User Interface.
Hugin
Decision Engine v6.3:
The HUGIN Decision Engine has improved support for object-oriented models. The
HUGIN Decision Engine has been extended with functionality to replace the class
of an instance node with another class with an equivalent interface. In
addition, a similar function for replacing a parent of a node with another
equivalent parent has been included. This allows the user to substitute classes
and parents without loosing the tables of effected nodes.
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