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Seismic Risk Analysis System

by Glenn H. Miyasato,
Weimin M. Dong,
Raymond E. Levitt,
Auguste C. Boissonnade,
Haresh C. Shah,



Document Type: Proceeding Paper

Part of: Expert Systems in Civil Engineering

Abstract:

The Seismic Risk Analysis System was developed to model the expertise of experienced engineers and researchers and to provide consultation to the users. The Seismic Risk Analysis System uses Deciding Factor, a tool for building expert systems which has a sensible interface with the users. An overall inferential tree was generated to describe the interrelations between all factors. The top node is the hypothesis of total risk. By a backward chaining search, the sub-hypotheses were verified or rejected. The combination rules were composed of most-logic, best-logic, worst-logic, and all-logic to facilitate the fitting of the system to the actual knowledge base. The answer to the inquiry of the users by the system are very flexible. They can be binary (yes or no), discrete (different levels) or continuous values with or without a certainty factor attached to them. The system also provides an explanation regarding how a conclusion was reached.

Subject Headings: System analysis | Seismic effects | Seismic tests | Risk management | Expert systems | Building systems | Verification

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