3 papers
eess.SP2020
Riemannian information gradient methods for the parameter estimation of ECD: Some applications in image processing
Jialun Zhou, Salem Said, Yannick Berthoumieu
Elliptically-contoured distributions (ECD) play a significant role, in computer vision, image processing, radar, and biomedical signal processing. Maximum likelihood. estimation (M…
stat.ML2020
Riemannian geometry for Compound Gaussian distributions: application to recursive change detection
Florent Bouchard, Ammar Mian, Jialun Zhou +3
A new Riemannian geometry for the Compound Gaussian distribution is proposed. In particular, the Fisher information metric is obtained, along with corresponding geodesics and dista…
math.ST2018
Fast, asymptotically efficient, recursive estimation in a Riemannian manifold
Jialun Zhou, Salem Said
Stochastic optimisation in Riemannian manifolds, especially the Riemannian stochastic gradient method, has attracted much recent attention. The present work applies stochastic opti…