Mixture of Bilateral-Projection Two-Dimensional Probabilistic Principal Component Analysis
Fujiao Ju, Yanfeng Sun, Junbin Gao, Simeng Liu, Yongli Hu, Baocai Yin
Abstract
The probabilistic principal component analysis (PPCA) is built upon a global linear mapping, with which it is insufficient to model complex data variation. This paper proposes a mixture of bilateral-projection probabilistic principal component analysis model (mixB2DPPCA) on 2D data. With multi-components in the mixture, this model can be seen as a `soft' cluster algorithm and has capability of modeling data with complex structures. A Bayesian inference scheme has been proposed based on the variational EM (Expectation-Maximization) approach for learning model parameters. Experiments on some publicly available databases show that the performance of mixB2DPPCA has been largely improved, resulting in more accurate reconstruction errors and recognition rates than the existing PCA-based algorithms.
BibTeX
@inproceedings{cvpr2016_mixtureofbilater,
title = {Mixture of Bilateral-Projection Two-Dimensional Probabilistic Principal Component Analysis},
author = {Fujiao Ju and Yanfeng Sun and Junbin Gao and Simeng Liu and Yongli Hu and Baocai Yin},
booktitle = {CVPR 2016},
year = {2016}
}