Abstract
Simplified fuzzy logic permits flexible representation of input-output relationships. In this study, sets of fuzzy rules based on simplified fuzzy logic were derived from observed data in the Fukushima area; meerorological data were input and rice yield data was output. These sets of rules outperformed a conventional multiple linear equation. Application of those rules to the ovserved meteorological data in 1993 predicts serious cold-weather damage of the year.
