Hierarchical Data Representation Model - Multi-layer NMF
Hyun Ah Song, Soo-Young Lee · arXiv (Cornell University) · 2013
In this paper, we propose a data representation model that demonstrates hierarchical feature learning using nsNMF. We extend unit algorithm into several layers. Experiments with document and image data successfully discovered feature hierarchies. We also prove that proposed method results in much better classification and reconstruction performance, especially for small number of features. feature hierarchies.