Supervised classification for a family of Gaussian functional models

Details Supervised classification for a family of Gaussian functional models Supervised classification for a family of Gaussian functional models

2010-04-28

arxiv.org/abs/1004.5031v1

Statistics

Machine Learning

30 pages, 6 figures, 2 tables

Scientific paper

In the framework of supervised classification (discrimination) for functional data, it is shown that the optimal classification rule can be explicitly obtained for a class of Gaussian processes with "triangular" covariance functions. This explicit knowledge has two practical consequences. First, the consistency of the well-known nearest neighbors classifier (which is not guaranteed in the problems with functional data) is established for the indicated class of processes. Second, and more important, parametric and nonparametric plug-in classifiers can be obtained by estimating the unknown elements in the optimal rule. The performance of these new plug-in classifiers is checked, with positive results, through a simulation study and a real data example.

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