Title :
Automatically integrating multiple rule sets in a distributed-knowledge environment
Author :
Wang, Ching-Hung ; Hong, Tzung-Pei ; Tseng, Shian-Shyong ; Liao, Chih-Mao
Author_Institution :
Chunghwa Telecommun. Labs., Chung-Li, Taiwan
fDate :
8/1/1998 12:00:00 AM
Abstract :
An actual knowledge application is made by means of evolution paradigms in terms of knowledge acquisition. An automatic knowledge integration approach in a distributed-knowledge environment is thus proposed to integrate multiple rule sets into a single effective rule set. The proposed approach consists of two phases: knowledge encoding and knowledge integration. In the encoding phase, each knowledge input is translated and expressed as a rule set, then encoded as a bit string. The combined bit strings from multiple knowledge inputs form an initial knowledge population, which is then ready for integration. In the knowledge integration phase, a genetic search technique generates an optimal or nearly optimal rule set from these initial knowledge-input strings. Finally, experimental results from diagnosis of brain tumors show that the rule set derived by the proposed approach is much more accurate than each initial rule set
Keywords :
genetic algorithms; knowledge acquisition; medical diagnostic computing; medical expert systems; search problems; automatic knowledge integration approach; automatic multiple rule set integration; bit stringencoding; brain tumor diagnosis; distributed-knowledge environment; effective rule set; encoding phase; evolution paradigms; genetic search technique; initial knowledge population; knowledge acquisition; knowledge encoding; knowledge input translation; nearly optimal rule set; optimal rule set; Buildings; Councils; Diagnostic expert systems; Encoding; Genetic algorithms; Knowledge acquisition; Knowledge based systems; Laboratories; Neoplasms; Psychology;
Journal_Title :
Systems, Man, and Cybernetics, Part C: Applications and Reviews, IEEE Transactions on
DOI :
10.1109/5326.704591