On the dimension effect of regularized linear discriminant analysis
On the dimension effect of regularized linear discriminant analysis
复制标题
正则化线性判别分析的量纲效应
DOI:
10.1214/18-ejs1469
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发表时间:
2017-10
影响因子:
1.1
通讯作者:
Jiang Binyan
中科院分区:
文献类型:
--
作者:
Wang Cheng;Jiang Binyan
This paper studies the dimension effect of the linear discriminant analysis (LDA) and the regularized linear discriminant analysis (RLDA) classifiers for large dimensional data where the observation dimension $p$ is of the same order as the sample size $n$. More specifically, built on properties of the Wishart distribution and recent results in random matrix theory, we derive explicit expressions for the asymptotic misclassification errors of LDA and RLDA respectively, from which we gain insights of how dimension affects the performance of classification and in what sense. Motivated by these results, we propose adjusted classifiers by correcting the bias brought by the dimension effect.
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