Accession Number : ADA131003


Title :   Discourse and Problem Solving


Descriptive Note : Technical rept.


Corporate Author : BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA


Personal Author(s) : Litman, Diane


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA131003


Report Date : Jul 1983


Pagination or Media Count : 56


Abstract : This report proposes a plan-based natural language system that incorporates knowledge of both plan and discourse structure of task-oriented dialogues. An initial representation of communicative (discourse) actions is discussed, in particular how to incorporate knowledge of legal moves as action effects rather than grammars. The subtle differences implicit in various surface realizations are also examined, as well as the structure of these communicative actions in actual dialogues. It is suggested that both local and global discourse structures are necessary. It is also suggested that planning models need to be extended to include two agent plan execution. Finally, a model of the goal recognition processes is presented. Communicative and task knowledge work in parallel, one source dynamically taking control over the other and reducing the search space, depending on the kind of discourse. Communicative recognition is hypothesized to be simple, using the knowledge provided by the analysis of surface phenomena and task plan recognition. (Author)


Descriptors :   *ARTIFICIAL INTELLIGENCE , *COMPUTATIONAL LINGUISTICS , *PROBLEM SOLVING , COGNITION , COMPREHENSION , COMPUTER ARCHITECTURE , COMPUTER COMMUNICATIONS , COMPUTER PROGRAMS , GRAMMARS , LINGUISTICS , MAN COMPUTER INTERFACE , NATURAL LANGUAGE , SYSTEMS ANALYSIS


Subject Categories : Linguistics
      Computer Programming and Software
      Computer Hardware
      Bionics


Distribution Statement : APPROVED FOR PUBLIC RELEASE