Ranking Based Unsupervised Feature Selection Methods: An Empirical Comparative Study in High Dimensional Datasets

摘要

Unsupervised Feature Selection methods have raised considerable interest in the scientific community due to their capability of identifying and selecting relevant features in unlabeled data. In this paper, we evaluate and compare seven of the most widely used and outstanding ranking based unsupervised feature selection methods of the state-of-theart, which belong to the filter approach. Our study was made on 25 high dimensional real-world datasets taken from the ASU Feature Selection Repository. From our experiments, we conclude which methods perform significantly better in terms of quality of selection and runtime.