Semi-Supervised Kernel PCA
Semi-Supervised Kernel PCA
复制标题
半监督核PCA
DOI:
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发表时间:
2010
期刊:
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通讯作者:
L. K. Hansen
中科院分区:
文献类型:
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作者:
Christian J. Walder;Ricardo Henao;Morten Mørup;L. K. Hansen
We present three generalisations of Kernel Principal Components Analysis (KPCA) which incorporate knowledge of the class labels of a subset of the data points. The first, MV-KPCA, penalises within class variances similar to Fisher discriminant analysis. The second, LSKPCA is a hybrid of least squares regression and kernel PCA. The final LR-KPCA is an iteratively reweighted version of the previous which achieves a sigmoid loss function on the labeled points. We provide a theoretical risk bound as well as illustrative experiments on real and toy data sets.