Introduction to the HUGIN ActiveX Server API for Visual
Basic 6.0 |
Startpage |
IMPORTANT:
As of version 8.1 (october 2014) The HUGIN API ActiveX Server is _DEPRECATED_ and no longer supported! Please use the HUGIN COM interface API instead.
The HUGIN API (application programming interface) is a library that allows
a programmer to use Bayesian belief networks with both discrete and
continuous variables and influence diagrams in their own
applications. It is used as a library where the programmer
invokes API functions from the application program whenever the
application wants to have belief network operations performed. This
enforces a strong layering between the application program and the
HUGIN API. Typically the application program handles a graphical
user interface - e.g the HUGIN tool is built upon the HUGIN API.
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| Figure 1: Strong layering between the
application program and the HUGIN API. The arrow indicates the
direction of function invocation between the layers.
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Previously the HUGIN API came only as a C library, but by creating a
Visual Basic ActiveX server it is possible to use the API when
creating a Visual Basic application. Besides simply supporting Bbn
programming in yet another language, the Visual Basic interface
enables the interaction between Bbns and applications such as
Microsoft Word, Excel or Access. E.g you can use Excel to calculate
the probability tables for the nodes in your network or extract
evidence from patient records stored in Access.
Programming the HUGIN API ActiveX Server in Visual Basic 6.0
To help you get started programming the HUGIN API ActiveX Server, a lightweight tutorial containing two
small examples has been written. One illustrates how one would use
Visual Basic as just another language to program Bbn applications
while the other shows how to exploit the many potential possibilities
by integrating with Excel.
As you move on, you can find information about all the classes
modules, properties, subs, functions etc. of the API in the API
reference manual.
In case you discover a bug og have some comments about the ActiveX
Server please send an email to activex@hugin.com.
