BIB-VERSION:: CS-TR-v2.0
          ID:: STAN//CS-TR-85-1036
       ENTRY:: May 01, 1995
ORGANIZATION:: Stanford University, Department of Computer Science
       TITLE:: Learning control heuristics in BB1
        TYPE:: Technical Report
      AUTHOR:: Hayes-Roth, Barbara
      AUTHOR:: Hewett, Micheal
        DATE:: January 1985
       PAGES:: 18
    ABSTRACT:: BB1, a blackboard system building 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. Understand-Preference, running in PROTEAN, a
               blackboard system for elucidating protein structure.
               Understand-Preference is triggered when a domain expert
               overrides one of BB1's scheduling recommendations. It
               identifies and encodes the heuristic underlying the expert's
               scheduling decision. The trace illustrates how learning
               knowledge sources exploit BB1's rich representation of domain
               and control knowledge, actions, and resuits.
       NOTES:: [Adminitrivia V1/Prg/19950501]
         END:: STAN//CS-TR-85-1036