| Hill, R.D. (1986). Supporting Concurrency, Communication, and Synchronization in Human-Computer Interaction: The Sassafras UIMS. ACM Transactions on Graphics, |
....mapped into a state diagram. Take the power set of all possible conditions which may be posted to the blackboard and use the precondition postcondition pairs as the transition function. The UIDE system does not provide for definition of new interaction objects. Both Olsen s PPS [1990; 1992] and Hill s Sassafras [1986] use rulebased systems which are similar to the precondition post condition method. A final technique used for specifying human computer dialog is to do so by demonstration. Using this technique the designer places widgets on the screen, and the system makes inferences about the intended design. ....
Hill, R. D. 1986. Supporting concurrency, communication, and synchronization in humancomputer interaction - the Sassafras UIMS. ACM Transactions on Graphics, Vol. 5, No. 3, (July), pp. 179-210.
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Hill, R.D. (1986). Supporting Concurrency, Communication, and Synchronization in Human-Computer Interaction: The Sassafras UIMS. ACM Transactions on Graphics,
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