Accession Number:

ADA159199

Title:

Learning Control Heuristics in BB1,

Descriptive Note:

Corporate Author:

STANFORD UNIV CA DEPT OF COMPUTER SCIENCE

Personal Author(s):

Report Date:

1985-01-07

Pagination or Media Count:

17.0

Abstract:

BB1, a blackboard system building computer architecture, ameliorates the knowledge acquisition bottleneck with generic knowledge sources that learn control heuristics. Some learning knowledge sources replace the knowledge engineer, interacting directly with domain experts. Others operate autonomously. The paper presents a trace from the illustrative knowledge source, Understanding, Preference, running in PROTEAN, a blackboard system for elucidating protein structure. Understand-Preference is triggered when a domain expert overrides one of BB1s scheduling recommendations. It identifies and encodes the heuristic underlying the experts scheduling decision. The trace illustrates how learning knowledge sources exploit BB1s rich representation of domain and control knowledge, actions, and results. Author

Subject Categories:

  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE