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A Parameter
Sensitivity Analysis Wizard. The Parameter Sensitivity
Analysis Wizard aids the user in the process of identifying
the most influential (conditional probability) parameters
of a model and analyzing their effects on the
"output" probabilities of the model.
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A color chart
is displayed in conjunction with a node table for discrete
nodes. The purpose of the color chart is to show where the
large values are concentrated.
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The Learning
Wizard now supports the specification of constraints
between a node and a subset of nodes.
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The performance
of the EM learning algorithm has been improved
significantly by saving the initial clique potentials to
memory, if possible. This improves the time efficiency of
learning CPTs significantly, but increases the memory
usage.
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A "Save to
memory" option has been added to Network Properties.
The save-to-memory operation stores a copy of the initial
clique potentials in memory. This implies a faster
initialization process which may improve efficiency of
performing multiple propagations (e.g., as part of the
Analysis Wizard).
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An adaptation
wizard has been added. The adaptation wizard allows for
performing batch adaptation using a number of HUGIN case
and data files. Experience counts and posterior marginal
distributions can be recorded as they develop during
adaptation, and can be plotted as a graph.
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Japanese
language support.
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Functionality
has been added for computing the joint probability
distribution over a set of discrete chance nodes.
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The HTML help
pages have been extended with search facilities. In
addition, the HTML help pages have been updated with a case
and data files tutorial. Also, revisions have been made to
the tutorial on adaptation and EM learning.
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Node and Domain
descriptions support the use of HTML tags.
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It is possible
to resize the dialog for inserting likelihood
evidence.
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The conflict
resolution button is enabled when evidence has been
propagated. This allows the user to investigate subsets of
the evidence when there is no conflict in the entire set of
evidence.
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A JDBC
interface has been added to the Wizards supporting database
connectivity.
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A Cases/Beliefs
panel has been added to the Analysis Wizard. This allows
the user to compute and display the posterior probability
of a hypothesis for a large number of cases.
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GUI response
when working with large networks has been speeded
up.
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Belief bars can
be forced to render in scientific notation.
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The status bar
reports the mean and variance for discrete numerical nodes
when selected in run-mode.
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The status bar
reports the mean and variance for continuous nodes when
selected in run-mode.
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The selection
of a continuous chance node reports the size of the node
table to the status bar.
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The title of a
network window now specifies whether a network is a
"net" (i.e., non class model) or a
"class" model.
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Sensitivity
analysis: Functions to aid in the process of identifying
the most influential (conditional probability) parameters
of a model and analyzing their effects on the
"output" probabilities of the model are now
provided.
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New statistical
distributions: LogNormal, Triangular, and PERT.
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An optional
location parameter has been added to the Gamma,
Exponential, and Weibull distributions.
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Truncated
continuous distributions can be expressed using a new
truncation operator: It is possible to specify double as
well as single truncation (single truncation is either left
or right truncation).
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It is now
possible to combine expressions of different types in
conditional expressions. This permits specification of
relationships that are sometimes probabilistic and
sometimes deterministic.
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The performance
of the operation for computing marginals on sets of nodes
has been improved.
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Th
e performance of
inference has been improved for cases in which a memory
backup is not available.
