Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1877714 | Applied Radiation and Isotopes | 2012 | 10 Pages |
Estimation of computer model parameters using field data is sometimes attempted in the presence of model bias. In this paper, using simulated field data, a vector-valued model bias is fit simultaneously with a scalar model calibration parameter. Our main finding is that simultaneous estimation of a bias vector and a scalar calibration parameter can be sensitive to assumptions made prior to data collection. Possible implications of this finding are considered in two examples of process monitoring for nuclear safeguards.
► A vector-valued model bias is fit simultaneously with a scalar model calibration parameter. ► Simultaneous estimation of a bias vector and calibration parameter is sensitive to assumptions. ► Possible implications of this finding are considered in two examples in nuclear safeguards.