Title :
HML-An approach for refining/managing knowledge discovered from databases
Author :
Zhong, Ning ; Ohsuga, Setsuo
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
Abstract :
Introduces an approach called HML (hierarchical model learning) for refining and managing knowledge discovered from databases. HML is implemented as one of subsystems of the GLS (Global Learning Scheme) discovery system developed by us for knowledge discovery in databases. It is used as a learning phase in multiple learning phases of GLS. By means of HML, concept clusters which are discovered from a database can be added to a knowledge base as classification knowledge with hierarchical models and can be easily refined/managed. HML is based on the model representation of multi-layer logic (MLL). A key feature of HML is the quantitative evaluation for selecting the best representation of the MLL formula by cooperatively using a criterion based on information theory and domain knowledge. Experience with a prototype of HML implemented by the knowledge-based system KAUS is discussed
Keywords :
deductive databases; formal logic; information theory; knowledge based systems; knowledge representation; learning (artificial intelligence); model-based reasoning; GLS discovery system; Global Learning Scheme; HML; KAUS; best knowledge representation selection; classification knowledge; concept clusters; databases; domain knowledge; hierarchical model learning; information theory; knowledge base; knowledge discovery; knowledge management; knowledge refinement; model representation; multi-layer logic; multiple learning phases; quantitative evaluation; Artificial intelligence; Information theory; Knowledge based systems; Knowledge management; Logic; Prototypes; Spatial databases; Technology management; Uncertainty; Unsupervised learning;
Conference_Titel :
Tools with Artificial Intelligence, 1993. TAI '93. Proceedings., Fifth International Conference on
Conference_Location :
Boston, MA
Print_ISBN :
0-8186-4200-9
DOI :
10.1109/TAI.1993.633990