Dissertation Information for John Edwin LairdNAME:
DEGREE:
DISCIPLINE:
SCHOOL: ADVISORS: COMMITTEE MEMBERS: MPACT Status: Incomplete - Not_Inspected Title: UNIVERSAL SUBGOALING
Abstract: "The goal of this thesis is to develop a problem-solving architecture where all appropriate knowledge is brought to bear to control all aspects of problem-solving behavior. Such an architecture allows the creation of completely reflective problem solvers. We identify a specific capability called universal subgoaling that together with previous work on a universal weak method makes this possible. With universal subgoaling, subgoals arise whenever there is a difficulty in performing the problem-solving functions. In a subgoal, the problem solver brings its knowledge to bear to reason about and eliminate the difficulty. We identify a set of requirements that must be met by any problem-solving paradigm and architecture that realizes universal subgoaling. We then describe an implementation of universal subgoaling within Soar, a production system based on search in a problem space. We provide two dimensions of universal subgoaling: (1) Soar creates subgoals whenever difficulties arise in any aspect of problem solving, (2) it is possible to encode the knowledge required to produce the weak methods so that the knowledge is used whenever it is needed. As part of the second |
MPACT Scores for John Edwin LairdA = 0 Advisors and Advisees Graph |