Interval computations with BK-products of fuzzy relations in diagnostic knowledge-based system CLINAID

CLINAID is a medical knowledge-based system that uses fuzzy relational structures for both knowledge representation and inference. The system can deal with multiple body systems. Interval-based fuzzy logics employed in CLINAID make it possible to deal efficiently with multiplicity of contexts that appear in medical decision making involving risk and uncertainty. A particular emphasis is placed on the description of the involvement of fuzzy triangle and square relational products that play a significant role in our approach.peer-reviewe