PATN is a design for a machine problem solver which uses an augmented transition network (ATN) to represent planning knowledge. In order to explore PATN's potential as a theory of human problem solving, a linguistic approach to protocol analysis is presented. An interpretation of a protocol is taken to be a parse tree supplemented by semantic and…

Computer graphics systems typically produce a single, machine-like character font. At most, these systems enable the user to (1) alter the aspect ratio (height-to-width ratio) of the characters, (2) specify a transformation matrix to slant the characters, and (3) define a virtual pen table to change the lineweight of the plotted characters.…

This guide gives step-by-step directions for authoring computer-assisted instruction materials as well as advice on planning, designing, coding, documenting, and evaluating computer assisted courseware. The importance of prospective courseware designers having a sound background in both educational theory and practice is also discussed, and…

QUE2 is a recently devised, natural language, questioning-answering program written in LISP1-5. It deals in simple, kernel sentences and employs the theory that the semantic content of a sentence is the set of relationships between conceptual objects (represented by the words in it), which the sentence and its structure imply. The data base of the…