Fuzzy expert system: applications to geology
Conference
·
· AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
OSTI ID:5994411
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 of clastic depositional environments.
- Research Organization:
- Univ. of Alabama, Tuscaloosa
- OSTI ID:
- 5994411
- Report Number(s):
- CONF-870606-
- Conference Information:
- Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Journal Volume: 71:5
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of a fuzzy logic expert system for pile selection. Master's thesis
Expert systems with fuzzy logic for intelligent diagnosis and control of nuclear power plants
RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL
Technical Report
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:6834406
Expert systems with fuzzy logic for intelligent diagnosis and control of nuclear power plants
Conference
·
Sun Dec 31 23:00:00 EST 1989
· Transactions of the American Nuclear Society; (United States)
·
OSTI ID:6779750
RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL
Technical Report
·
Fri Jun 30 00:00:00 EDT 2000
·
OSTI ID:822119