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- HISTORY OF ISTAR
-
- VERSION 1.03, September 1996
-
- # Made Istar more usable for drawing semantic networks. Two main
- facilities:
-
- # Added facility to alter the visual appearance of item boxes, in a
- limited way. Pen 1 gives the text colour for the label, Pen 2 and Pattern
- give the appearance of the box outline. This meant new gadgets added to
- the Item Type Panel.
-
- # Added facility to define, for an item type box, which types of
- relationship will be drawn when user starts drawing from left or right
- edge.
-
- # Added KB Area panel, showing some details of the KB area, and allowing
- you to alter some.
-
- # Tidied up the mechanism for handling several KBs. Removed one or two
- bugs that had crept in, such as referring to certain things in KB1 when KB2
- was active.
-
- # Added facility to record the Control Screen Parking position.
-
- # Hopefully more tolerant when it doesn't find the fonts it wants.
-
- # Cured one or two bugs encountered when linking items or moving links.
-
- # Tidied up Preferences (but still too few), and cured the problems that
- happened when setting them without a KB.
-
- # Removed the crash/inf loop when hitting the meaning-bar right hand
- gadgets when there is no KB. (As I never told users about them, this
- should not have been a problem.)
-
-
- VERSION 1.02, July 1996
-
- # Placed on Aminet first as /misc/misc without install script, and then
- with proper install script and updated docs in /biz/misc.
-
- # Istar will now process more than one KB.
-
- # It meant replacing the separate Select Item Type, Select Relationship
- Type and Goal List panels with a single single KB panel. Each knowledge
- base has its own KB panel.
-
- # It also meant some internal changes to the structure of the modules
- management, ES module operations, and other things, which are not described
- here. (They are described in my Logs.)
-
- # I also put the backward and forward chaining on a sounder footing.
- Normally it worked OK but some funnies happened with overridden attributes.
-
- # When resetting an attribute for backward chaining, all its antecedents
- were reset OK, but the other consequents of those were not reset. Now they
- are.
-
- # Implemented facility to define new relationship types. This enables us
- to move towards a semantic net builder.
-
- # Added RANDOM unary operator.
-
- # Proper implementation of limits on ordinals and enums.
-
-
- VERSION 1.01, June 1996
-
- This was the first version released. It was a development of the KBTools
- software that came out of the INCA project, with a year spent on making its
- code more robust and generalized. Istar works fairly well and robustly as
- an inference net builder. But it can only process one KB at a time.
-
- Copyright (c) Andrew Basden, on all the dates shown.
-