Development of an Expert System for Daily Drought Monitoringby T. J. Chang, Ohio Univ, Athens, United States,
H. Zheng, Ohio Univ, Athens, United States,
X. A. Kleopa, Ohio Univ, Athens, United States,
Abstract: A daily drought monitoring system was developed using the Clips Expert System software package. It consists of four components: (1) The knowledge base that contains rules in the form of IF-THEN type for decision of assigning a daily drought severity; (2) The working memory that contains facts of historic drought characteristics including truncation levels, mean durations, and mean conditional probabilities estimated at gaging stations; (3) The inference engine that makes inferences to decide what rules are satisfied by current facts for assigning drought severity levels; (4) The user interface that provides the mechanism for a communication between the user and the system. A six-month period of the 1988 drought in the central Ohio region was used to test the developed system. It was found that the developed system could effectively detect daily drought occurrences.
Subject Headings: Droughts | Expert systems | Communication systems | Computer software | Engines | Knowledge-based systems | Probability | Gaging stations | North America | Ohio | United States
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