Unsupervised feature selection with multi-subspace randomization and collaboration

Unsupervised feature selection has been an important technique in high-dimensional data analysis. Despite significant success, most of the existing unsupervised feature selection methods tend to estimate the underlying structure of data in the original feature space, but lack the ability to explore various subspaces in the high-dimensional space. In this paper, we argue that the use of a large number of random subspaces can significantly benefit...