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6 - Empirical Christoffel–Darboux Analysis

from Part Two - Statistics and Applications to Data Analysis

Published online by Cambridge University Press:  31 March 2022

Jean Bernard Lasserre
Affiliation:
LAAS-CNRS, Toulouse
Edouard Pauwels
Affiliation:
Institut de Recherche en Informatique, Toulouse
Mihai Putinar
Affiliation:
University of California, Santa Barbara
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Summary

For empirical measures supported on a random sample, statistical bounds describe the large-sample asymptotic behavior of the empirical Christoffel function. The Christoffel function associated with a fixed degree will converge to its population counterpart in the large-sample limit. The convergence can be made quantitative using random matrix concentration. Furthermore, in the context of singularly supported population measure, the rank will stabilize almost surely for a finite number of samples.

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Publisher: Cambridge University Press
Print publication year: 2022

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