Premium
Generalization of a parameter set selection procedure based on orthogonal projections and the D ‐optimality criterion
Author(s) -
Chu Yunfei,
Hahn Juergen
Publication year - 2012
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.12727
Subject(s) - orthogonalization , generalization , selection (genetic algorithm) , set (abstract data type) , mathematics , mathematical optimization , sensitivity (control systems) , algorithm , computer science , artificial intelligence , engineering , mathematical analysis , electronic engineering , programming language
Many models derived from first principles contain more parameters than can be reliably estimated from data. Selecting a subset of the parameters for estimation is one common approach to deal with this problem. One popular method sequentially selects parameters based on orthogonalization of the sensitivity vectors; however, it has the drawback that only one parameter is added at each step of the iteration and that no correlations of not yet chosen parameters can be taken into account. To address this drawback, a generalization of the parameter set selection procedure based on orthogonalization is presented in this work. The procedure can add any number of parameters at each iteration such that correlations among the parameters that will be added to the set of estimated parameters can be taken into account. It is shown that two existing parameter set selection techniques form special cases of the presented method. © 2011 American Institute of Chemical Engineers AIChE J, 2012