University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Bayesian model calibration for generalized linear models: An application in radiation transport

Bayesian model calibration for generalized linear models: An application in radiation transport

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UNQW04 - UQ for inverse problems in complex systems

Co-author: Mike Grosskopf (Los Alamos National Lab)

Model calibration uses outputs from a simulator and fi eld data to build a predictive model for the physical system and to estimate unknown inputs. The conventional approach to model calibration assumes that the observations are continuous outcomes. In many applications this is not the case. The methodology proposed was motivated by an application in modeling photon counts at the Center for Exascale Radiation Transport. There, high performance computing is used for simulating the flow of neutrons through various materials. In this talk, new Bayesian methodology for computer model calibration to handle the count structure of our observed data allows closer fidelity to the experimental system and provides flexibility for identifying different forms of model discrepancy between the simulator and experiment.

This talk is part of the Isaac Newton Institute Seminar Series series.

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