A New Dimensionality Reduction Method with Correlation Analysis and Universum Learning
A New Dimensionality Reduction Method with Correlation Analysis and Universum Learning
复制标题
一种新的关联分析和宇宙学习的降维方法
DOI:
10.1134/s1054661818020189
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发表时间:
2018-04
影响因子:
1
通讯作者:
Wang Liping
中科院分区:
文献类型:
--
作者:
Chen Xiaohong;Wang Liping
Dimensionality reduction (DR) is an important and essential preprocessing step in machine learning, possibly using discriminative information, neighbor information or correlation information and resulting in different DR methods. In this work, we design novel DR methods that employ another form of information, i.e., the maximal contradiction on Universum data which belong to the same domain as the task at hand, but do not belong to any class of the training data. It has been found that classification and clustering algorithms achieve favorable improvements with the help of Universum data and such learning methods are referred as to Univesum learning. Both of them can be expressed by generalized eigenvalue problem and solved by eigenvalue computation. The experiments on both synthetic and real-world datasets are presented to show that the proposed DR methods can obtain better performance.
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