Asymptotic comparison of semi-supervised and supervised linear discriminant functions for heteroscedastic normal populations
Asymptotic comparison of semi-supervised and supervised linear discriminant functions for heteroscedastic normal populations
复制标题
异方差正态总体的半监督和监督线性判别函数的渐近比较
DOI:
10.1007/s11634-016-0266-6
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发表时间:
2018
影响因子:
1.6
通讯作者:
Kenichi Hayashi
中科院分区:
文献类型:
--
作者:
Yuki Kawakubo;Tatsuya Kubokawa and Muni S. Srivastava;足立浩平;Norihiro Kamide;Kenichi Hayashi
It has been reported that using unlabeled data together with labeled data to construct a discriminant function works successfully in practice. However, theoretical studies have implied that unlabeled data can sometimes adversely affect the performance of discriminant functions. Therefore, it is important to know what situations call for the use of unlabeled data. In this paper, asymptotic relative efficiency is presented as the measure for comparing analyses with and without unlabeled data under the heteroscedastic normality assumption. The linear discriminant function maximizing the area under the receiver operating characteristic curve is considered. Asymptotic relative efficiency is evaluated to investigate when and how unlabeled data contribute to improving discriminant performance under several conditions. The results show that asymptotic relative efficiency depends mainly on the heteroscedasticity of the covariance matrices and the stochastic structure of observing the labels of the cases.
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影响因子:
3.7
作者:
Boldea, Otilia;Magnus, Jan R.
通讯作者:
Magnus, Jan R.
DOI:
10.1007/s10463-009-0264-y
发表时间:
2011-10-01
影响因子:
1
作者:
Komori, Osamu
通讯作者:
Komori, Osamu
影响因子:
2
作者:
J. Airoldi;Bernard D. Flury;M. Salvioni
通讯作者:
M. Salvioni
影响因子:
3.7
作者:
Terence J. O'Neill
通讯作者:
Terence J. O'Neill
影响因子:
1.2
作者:
G. McLachlan;D. Scot
通讯作者:
D. Scot