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Knowledge-Assisted Interactive Probabilistic Site Characterization

by I. S. Halim, GEI Consultants Inc, Winchester, United States,
W. H. Tang, GEI Consultants Inc, Winchester, United States,
J. H. Garrett, Jr., GEI Consultants Inc, Winchester, United States,



Document Type: Proceeding Paper

Part of: Geotechnical Engineering Congress?1991

Abstract:

This paper describes a prototype knowledge-based expert system for probabilistic geological anomaly characterization and geotechnical system reliability evaluation. The system assists engineers in performing site exploration decisions and geotechnical performance evaluations using probabilistic analysis in a user-friendly environment while utilizing their experience and judgment. A frame-based structure serves as a modular, flexible, and powerful representation scheme for the system's knowledge. The uncertainties of the domain objects and probabilistic modeling are explicitly represented in the knowledge-base. This explicit representation proves to be effective in incorporating any type of probabilistic site characterizations and reliability evaluations into the environment. The prototype system performance is considered to be satisfactory and shows potential for further system development.

Subject Headings: Probability | Expert systems | Site investigation | Knowledge-based systems | Geology | System reliability | Systems engineering

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