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LANS Informal Seminar: Oleg Roderick, Zhu Wang, Brian Lockwood
August 18, 2010 @ 15:00 CDT
Seminar Title: Dimension reduction in uncertainty quantification of nuclear engineering models
Speaker: Oleg Roderick, Zhu Wang, Brian Lockwood,
Date/Time: 2010-08-18 15:00
Location: Bldg 240 Rm 4301
Description:
In our larger research effort, we approximate the effect of uncertainty in the inputs of a complex simulation model by a hybrid polynomial regression method that uses first-order derivatives of the model as additional fitting conditions. We shall now discuss dimensionality reduction required for the models with large dimension of the uncertainty space. Two other aspects: automatic differentiation, and selection of best polynomial basis for approximation will also be mentioned.