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- W2034223032 abstract "Nearest-centroid classifiers have recently been successfully employed in high-dimensional applications, such as in genomics. A necessary step when building a classifier for high-dimensional data is feature selection. Feature selection is frequently carried out by computing univariate scores for each feature individually, without consideration for how a subset of features performs as a whole. We introduce a new feature selection approach for high-dimensional nearest centroid classifiers that instead is based on the theoretically optimal choice of a given number of features, which we determine directly here. This allows us to develop a new greedy algorithm to estimate this optimal nearest-centroid classifier with a given number of features. In addition, whereas the centroids are usually formed from maximum likelihood estimates, we investigate the applicability of high-dimensional shrinkage estimates of centroids. We apply the proposed method to clinical classification based on gene-expression microarrays, demonstrating that the proposed method can outperform existing nearest centroid classifiers." @default.
- W2034223032 created "2016-06-24" @default.
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- W2034223032 date "2007-10-03" @default.
- W2034223032 modified "2023-09-27" @default.
- W2034223032 title "Optimality Driven Nearest Centroid Classification from Genomic Data" @default.
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- W2034223032 doi "https://doi.org/10.1371/journal.pone.0001002" @default.
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