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- W2297803518 abstract "Expert systems are potentially valuable tools for scientists who are in so-called inexact sciences, such as geology. This is because expert-system technology deemphasizes the number-crunching aspect of computers; instead, symbol manipulation is the kernel of the expert-system software. Most geologic data are imprecise and often incomplete; yet, geologists must make decisions under uncertainty based on approximate reasoning. To deal with those situations, Aristotelian logic of true/false employed in most expert-system shells is inadequate; fuzzy logic must be incorporated in the inference engine as well as knowledge base of the expert system. Furthermore, many geological problems cannot be solved by a deductive chain of reasoning, but the solutions have to rely on a collection of related facts in an inductive fashion. An expert system shell which can accomplish all these is FLOPS - Fuzzy Logic Production System. The system employs fuzzy concepts throughout: production rules use fuzzy logic; data types include fuzzy numbers; and fuzzy predicates are provided for fuzzy comparison of numbers. It handles inductive reasoning by a production system which fires rules in parallel rather than sequentially, using weakly monotonic logic to solve memory conflicts. This paper is illustrated by examples from qualitative x-ray phase analysis and determination ofmore » clastic depositional environments.« less" @default.
- W2297803518 created "2016-06-24" @default.
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- W2297803518 date "1987-05-01" @default.
- W2297803518 modified "2023-09-24" @default.
- W2297803518 title "Fuzzy expert system: applications to geology" @default.
- W2297803518 hasPublicationYear "1987" @default.
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