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- Short: Knowledge Based System Inference Net Builder
- Author: Andrew@basden.demon.co.uk
- Uploader: Andrew@basden.demon.co.uk
- Version: 1.083
- Type: dev/misc
-
- ISTAR
-
- Istar is a knowledge based system builder that allows you to construct
- inference nets, bayesian nets and semantic nets. It has a particularly
- nice user interface, with a smoothness that only Amiga hardware can give.
- So it is useful for decision support, to help you clarify complex ideas.
-
- You build your knowledge base by drawing boxes and arrows, and then
- can run the KB direct. See docs/Intro or docs/index.html (which have
- the same content) to get going. Most documentation is now in html.
-
- See the following Web pages:
-
- The main inca page is
- http://www.salford.ac.uk/iti/projects/inca/inca.html
-
- The main Istar page is
- http://www.basden.demon.co.uk/pgm/Istar
- http://www.salford.ac.uk/its274/istar/istar.html
-
- NEW IN THIS VERSION (See Docs/history.html)
-
- Version 1.083 is a small update to Version 1.08, which had a few bugs
- that had crept in. (See docs/bugs.html). Plus a couple of nice
- things to make it easier to use by KB developers. For instance, on
- the User Question Panel there is a Cons button that shows you all
- the things that this question affects (consequents), and an Att button
- so you can alter the question wording immediately.
-
- Version 1.08 was a major update from both version 1.07 and the last major Aminet
- version 1.06. Alongside various internal tidying up and various
- improvements in styling, the main addition is the Lista facility
- which allows you to make lists (sets) of things in your KB, and to
- do database-like searches on it including relational selects and joins
- and even multi-joins - as was promised in the docs for version 1.06.
- (It is not, however, a full facility yet.) You now have control over
- the visual appearance of boxes and arrows, and also over the easel
- palette. Further, dealing with items and relationships has been made
- more flexible so that you can, for instance, add new attributes to
- items and item types at any time, and also add them to relationships.
- Also, to move towards the ability to pull information from across
- the internet, there is an asynchronous version of backward chaining.
-
- PLANS
-
- Next version I hope to have facilities to obtain information
- via ARexx and the internet.
-
- ISTAR NEWS
-
- As bugs are discovered, as tips are suggested, and as better
- documentation is written, etc., - things that do not involve
- a new version of Istar - they will be put on Aminet as they arrive,
- under the name Istarnews. So Istarnews should appear in the RECENT
- list more frequently than versions of Istar.
-
- COPYRIGHT
-
- Istar, all versions, are copyright (C) Andrew Basden, University
- of Salford, Salford, M5 4WT, U.K. Andrew@basden.demon.co.uk.
-
- The version with this file can be used freely as long as all copies
- of it include the name 'Istar' in their file names whereever they
- are stored and as long as this file and copyright notice is
- kept with the file.
-
- SYSTEM REQUIREMENTS
-
- Known to work on Amiga 1200, 3000, 4000. Will just about run in
- 2Mb machines, but recommend use the IstarPrefs_LowMem as your
- preferences file.
-
- Assigns needed (can work without them):
- IstarSys: (has IstarPrefs and, in future, other things)
- KBTools: where KBs are saved etc.
- Fonts used (unless specified in IstarPrefs):
- Courier
- Garnet
- Topaz
- Libs used:
- iff.library (but can work without it)
-
- It works best if you assign KBTools: to the directory where you keep
- your knowledge bases, and IstarSys: to a directory where various system
- files are kept. At present, the only file sought in IstarSys is IstarPrefs.
- Otherwise just starts as Sys: root.
-
- FILES INCLUDED:
-
- Istar Main program.
- This Istar.readme and Intro files.
- Preferences files.
- Documentation. Most is now html and cross-linked
- for easy reference. docs/Intro is an ascii version of index.html.
- Sample knowledge bases.
- Installation script.
-
- DISCLAIMER:
-
- Istar is supplied as-is.
-
- Istar is still under development. Some of its buttons do not work
- because they are not attached to anything yet. Some of its more
- exotic data transformations do not yet work. See bugs.html.
-
- Let me know what you think of it, by mailing me at Istar@basden.demon.co.uk
-
- Andrew Basden.
- 26.12.97.
-