Title
Consistent least squares fitting of ellipsoids
Abstract
A parameter estimation problem for ellipsoid fitting in the presence of measurement errors is considered. The ordinary least squares estimator is inconsistent, and due to the nonlinearity of the model, the orthogonal regression estimator is inconsistent as well, i.e., these estimators do not converge to the true value of the parameters, as the sample size tends to infinity. A consistent estimator is proposed, based on a proper correction of the ordinary least squares estimator. The correction is explicitly given in terms of the true value of the noise variance.
Year
DOI
Venue
2004
10.1007/s00211-004-0526-9
Numerische Mathematik
Keywords
Field
DocType
sample size,parameter estimation problem,consistent estimator,orthogonal regression estimator,measurement error,noise variance,squares estimator,proper correction,true value,ellipsoid fitting,parameter estimation,ordinary least square,least square
Minimum-variance unbiased estimator,Mathematical optimization,Newey–West estimator,Mathematical analysis,Generalized least squares,Bias of an estimator,Non-linear least squares,Total least squares,Linear least squares,Mathematics,Consistent estimator
Journal
Volume
Issue
ISSN
98
1
0029-599X
Citations 
PageRank 
References 
22
2.88
9
Authors
3
Name
Order
Citations
PageRank
Ivan Markovsky1617.81
A. Kukush2608.24
S. Van Huffel326032.75