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Abstract

This paper considers two different methods for sensitivity analysis. The first one is a modification of the classical differential analysis of the output function y with respect to its inputs x= (x(1), x(2),...) in that it assumes as a measure of the importance of x(i), the i-th component of x, the absolute value of the derivative of y with respect to x(i), averaged over the whole input variable space. The second method consists in a generalization of the well known Fourier amplitude sensitivity test (FAST) which allows computing also a total sensitivity index which accounts for higher-order contributions from the interactions of the parameters. The two methods are here compared in an application on the reliability model of a nuclear reactor scram system.

Additional information

Authors: TARANTOLA S, JRC Ispra (IT);SALTELLI A, JRC Ispra (IT);MARSEGUERRA M, Department of Nuclear Engineering, Polytechnic of Milan (IT);PADOVANI E, Department of Nuclear Engineering, Polytechnic of Milan (IT);ZIO E, Department of Nuclear Engineering, Polytechnic of Milan (IT)
Bibliographic Reference: Paper presented: ESREL 98, Trondheim (NO), June 17-19, 1998
Availability: Available from (1) as Paper EN 41213 ORA
Record Number: 199810413 / Last updated on: 1998-03-31
Category: PUBLICATION
Original language: en
Available languages: en