| Title: | Europe-Swas-Artificial-Intelligence | 
| Moderator: | HERON::BUCHANAN | 
| Created: | Fri Jun 03 1988 | 
| Last Modified: | Thu Aug 04 1994 | 
| Last Successful Update: | Fri Jun 06 1997 | 
| Number of topics: | 442 | 
| Total number of notes: | 1429 | 
This note is reserved for discussion of Crystal. Please feel free to post questions, experiences, descriptions, and comments as replies to this note.
| T.R | Title | User | Personal Name | Date | Lines | 
|---|---|---|---|---|---|
| 50.1 | Crystal clear ??? | PRSUD2::MERCIER | Henri Mercier,SWAS Paris | Tue Feb 07 1989 18:25 | 5 | 
|     Question :
    
    What is Crystal ?
    
    - Henri -
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| 50.2 | crystal info | NZOV01::PARKINSON | Reunite Gondwannaland! | Thu Jun 29 1989 07:06 | 14 | 
|     This note has lain dead for a while. Since I saw crystal running
    not long ago I can tell the world it is an expert system shell.
    I wasn't very impressed, but the person demoing it knew very little
    about crystal so maybe I didn't see it at its best.
    
    It seemed to be rule based, but the rules looked to be represented
    in a big decision tree whose leaves were questions. I guess it must
    have been backward chaining. It was running on a PC and it had an
    advisory system for local health authorities (written in the UK).
    I was told the reason these people chose crystal was its speed.
    
    It's not much, I know, but it's nice to know something for a change!
    
    Roger
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