INCORPORATION OF UNCERTAINTY INFORMATION IN MODELING A CHARACTERISTIC OF A DEVICE

摘要

A method and model for modeling a characteristic C that is distributed within a domain. A provided base equation expresses C as a function f of a variable V through use of N+1 parameters C₀, C₁, . . . , C_N in the form C=f(C₀, C₁, . . . , C_N, V), wherein N≧1, and wherein C₀, C₁, . . . , C_N are subject to uncertainty. A probability density function (PDF) is provided for describing the probability of occurrence of C₀ in accordance with the uncertainty. Subsidiary equations expressing C₁, . . . , C_N in terms of C₀ are provided. A value of C may be sampled by: providing a value V′ of V; picking a random value C_0R of C₀ from the PDF; computing values C_1R, . . . , C_NR of C₁, . . . , C_N, respectively, by substituting C_0R into the subsidiary equations; and calculating C by substituting C_0R, C_1R, . . . , C_NR and V′ into the base equation.