Accession Number:

ADA218466

Title:

Investigations of Human Question Answering

Descriptive Note:

Final rept. Dec 1987-Dec 1989,

Corporate Author:

MEMPHIS STATE UNIV TN

Personal Author(s):

Report Date:

1990-02-01

Pagination or Media Count:

73.0

Abstract:

This project developed and tested a model of human question answering called QUEST. QUEST accounts for the answers that adults produce when they answer different categories of open-class questions, such as why, how, when, and what-if. QUEST identifies the information sources for questions and assumes that knowledge is organized in the form of conceptual graph structures containing statement nodes and relational arcs. Example types of structures include goal hierarchies, casual networks, taxonomic hierarchies, and spatial partonomies. Question answering procedures operate systematically on these knowledge structures. An important property of QUEST consists of three convergence mechanisms which narrow down the node space from dozenshundreds of nodes to a handful of nodes that serve as good answers to a question. eg

Subject Categories:

  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE