New Release - HUGIN 7.4
Today we are releasing a new version of the
HUGIN software (v7.4). The main new feature of this release is functionality in
the HUGIN Graphical User Interface (GUI) to import the specification of a Bayesian
network from a set of primitive tables. In addition, the support for solving
influence diagrams has been improved with new features.
The new functionality to import a Bayesian
network from a set of primitive tables gives the user an alternative to using
the traditional HUGIN Network Specification language for specifying a Bayesian
network model.
The development of the functionality
concerning importing a Bayesian network from a set of primitive tables
(introduced in HUGIN 7.4) has been sponsored by Danish mortgage credit institution
NykreditRealkredit (www.nykredit.dk).
HUGIN Graphical User Interface v7.4
The HUGIN Graphical User Interface has been
improved with various new features. This includes:
- The JointDialog is enabled for LIMIDs and
supports decisions.
- The CorrelationDialog is enabled for LIMIDs
and supports decisions.
- It is possible to initialize policies for
decision nodes in Run-mode. This enables the user to initialize policies
without returning to Edit-mode, for instance, when performing Single
Policy Updating under different evidence scenarios.
- It is possible to display the requisite
ancestors for decision nodes. This is, for instance, useful for solving a
network with decisions and utlity functions as a traditional influence
diagram.
- Switching node class (e.g., switching the
node class from decision to chance and vice versa).
- The Adaptation Wizard has been expanded
with extra recording and logging features.
- Case counts enabled for data files in the
Adaptation Wizard.
- The Sensitivity to Evidence Dialog can
now be open from the cases/beliefs tab in the Analysis Wizard. This is
useful for explaining the results of belief update in the Analysis Wizard.
- A new option to specify additional
optimal triangulation parameters has been introduced.
- Support for native printing using lpstat/lpr
and PostScript on Unix-like systems (e.g., Linux, Solaris, Mac).
- The speed of resetting, normalizing and
randomizing probability, experience and fading tables has been improved.
- Internationalization of HUGIN Graphical
User Interface (buttons and menus now include support for English, French
and Japanese languages)
- The HUGIN Graphical User Interface has
been extended with a Code Wizard to generate C, C# and Java code for
runtime models. This enables the user to generate code constructing a
model using the corresponding HUGIN API.
- Other minor improvements.
Finally, efforts have been put into
improving the performance of the HUGIN Graphical User Interface.
HUGIN Decision Engine v7.3
The HUGIN Decision Engine has been extended
with the following features:
- Hugin API libraries for the Windows
platforms are now provided for Visual Studio 2010 (in addition to Visual
Studio 6.0, Visual Studio .NET 2003, Visual Studio 2005, and Visual Studio
2008).
- A function for identifying the
"requisite ancestors" of a decision node is now provided. This
is useful for identifying the relevant past observations and decisions in
traditional influence diagrams (i.e., influence diagrams obeying the
"no-forgetting" rule).
- It is now possible to convert a decision
node to a chance node (or vice versa) -- while preserving all other
attributes of the node unchanged.
- The compression feature is now supported
for LIMIDs.
- The data type used for table indexes
within the data structures of compressed domains is now a 32-bit integer
type (this used to be a 16-bit type). This change allows the construction
of much larger compressed tables (at the cost of a higher memory
consumption).
- Because of this, HKB files containing
compressed domains use a new revision of the file format (but other HKB
files use the same revision as Hugin API version 7.3).
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