Results 231 to 240 of about 25,502,428 (271)

Problems with Procrustes analysis

Journal of Applied Statistics, 1989
Procrustes analysis is applied to three different data sets. From this, it is inferred that the uncritical use of this technique can be highly misleading. It is suggested that an examination of the internal structure of the data is needed to clarify the results and one form of such examination is used as an illustration in the text.
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Procrustes Analysis and Geodetic Sciences

2003
Procrustes analysis is a well known technique to provide least squares matching of two or more factor loading matrices or for the multidimensional rotation and scaling of different matrix configurations. Applied at first as a useful tool in factor analysis, today it has become a popular method of shape analysis (Goodall 1991, Dryden and Mardia 1998).
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An Improved Majorization Algorithm for Robust Procrustes Analysis

2005
In this paper, we focus on algorithms for Robust Procrustes Analysis that are used to rotate a solution of coordinates towards a target solution while controlling outliers. Verboon (1994) and Verboon and Heiser (1992) showed how iterative weighted least-squares can be used to solve the problem.
Groenen, P.J F, Giaquinto, P., Kiers, H.A.L.   +2 more
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Perturbation analysis of the orthogonal procrustes problem

BIT, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Surgery Task Classification Using Procrustes Analysis

2019 IEEE Applied Imagery Pattern Recognition Workshop (AIPR), 2019
Recognizing surgical tasks is a crucial step toward automatic surgical training in robotic surgery training. In this work, we proposed and developed a classification framework for surgical task recognition. This approach is based on using three components: Dynamic Time Warping (DTW), Procrustes analysis (PA), and Fuzzy k- nearest neighbor (FkNN). First,
Safaa Albasri, Mihail Popescu, James Keller 0001   +2 more
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The isotropic scaling problem in Generalized Procrustes Analysis

Computational Statistics & Data Analysis, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
ten Berge, Jos M. F., Bekker, Paul A.
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Global optimization for optimal generalized procrustes analysis

CVPR 2011, 2011
This paper deals with generalized procrustes analysis. This is the problem of registering a set of shape data by estimating a reference shape and a set of rigid transformations given point correspondences. The transformed shape data must align with the reference shape as best possible. This is a difficult problem.
Daniel Pizarro 0001, Adrien Bartoli
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Generalized Isotropic Procrustes Analysis

2019
The main peculiarity of the problem treated in this chapter is given by the fact that \(m > 2\) matrix configurations are simultaneously considered.
Fabio Crosilla, Alberto Beinat, Andrea Fusiello, Eleonora Maset, Domenico Visintini   +4 more
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Procrustes Analysis on the Special Manifolds

2003
This chapter presents some theoretical results obtained by applying Procrustes methods to statistical analysis on the manifolds V k,m and P k,m−k . Procrustes methods have been useful procedures where we transform a set of given matrices to maximum agreement in the least squares sense, for example, by orthogonal matrices [e.g., Ten Berge (1977)], by ...
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Procrustes Analysis and Stock Markets [PDF]

, 2011
In this paper, Procrustes Analyses are introduced with their various facets and set in an economics framework with an application to stock markets. The time series of the daily indexes of eight major world stock markets are considered for a four-year period (1988-91) and five two-year mobile windows are built to find a common graphical representation ...
CAMIZ, Sergio, J. J. Denimal
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