Expert Systems are definitely one of the major success of Artificial Intelligence. Unfortunately, the knowledge acquisition bottleneck hampers the development of Expert Systems in practical domains. Machine Learning is a promising solution to this problem and this paper discusses an Automatic Knowledge Acquisition and Refinement System(AKARS-1) for knowledge in rule form. Two major components AKARS-1, the learning component (AKA-1) and the Heuristic Refinement System (HERES) are detailed. A prototype of AKA-1 has been implemented and three case studies are used to validate this prototype. A comparison between ID3 and AKA-1 is presented. HERES employs heuristics and statistical methods to guide its search for refinements. These methods are also discussed in the paper.
|Title of host publication
|Knowledge acquisition for knowledge-based systems
|H. Motoda, R. Mizoguchi, J. Boose, B. Gaines
|Number of pages
|Published - 1991