Document Type
Article
Publication Date
August 2009
Journal Title
Journal of Inverse and Ill-Posed Problems
Volume
17
Issue
6
Abstract
We propose an algorithm to select parameter subset combinations that can be estimated using an ordinary least-squares (OLS) inverse problem formulation with a given data set. First, the algorithm selects the parameter combinations that correspond to sensitivity matrices with full rank. Second, the algorithm involves uncertainty quantification by using the inverse of the Fisher Information Matrix. Nominal values of parameters are used to construct synthetic data sets, and explore the effects of removing certain parameters from those to be estimated using OLS procedures. We quantify these effects in a score for a vector parameter defined using the norm of the vector of standard errors for components of estimates divided by the estimates. In some cases the method leads to reduction of the standard error for a parameter to less than 1% of the estimate.
Recommended Citation
Cintron-Arias, Ariel; Banks, H.; Capaldi, Alex; and Lloyd, Alun, "A Sensitivity Matrix Methodology for Inverse Problem Formulation" (2009). Mathematics and Statistics Faculty Publications. 41.
https://scholar.valpo.edu/math_stat_fac_pubs/41
Comments
DOI: 10.1515/JIIP.2009.034 (from http://www.degruyter.com/view/j/jiip.2009.17.issue-6/jiip.2009.034/jiip.2009.034.xml)