LINC (Langauge, Information, and Computation) laboratory, which consists of a dedicated VAX 11/785, I0 Symbolics Lisp machines, 7 HP 68020 based AI workstations, a SUN workstation, several Macintoshes, and a laser printer. These machines are networked together and to other research facilities in the department. MAJOR THRUST Natural language interfaces providing support for many different communicative functions. • Providing definitions of concepts * Recognizing and correcting user

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... * Providing explanations • Offering to provide information later, when known • Verifying and demonstrating understanding • Exploiting and enriching the context of natural language discourse between user and system. WORK-TO-DATE