Gaussian distributions on Riemannian symmetric spaces: statistical learning with structured covariance matrices

S Said, H Hajri, L Bombrun… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
The Riemannian geometry of covariance matrices has been essential to several successful
applications, in computer vision, biomedical signal and image processing, and radar data …

Riemannian Gaussian distributions on the space of symmetric positive definite matrices

S Said, L Bombrun, Y Berthoumieu… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
Data, which lie in the space P m, of m× m symmetric positive definite matrices,(sometimes
called tensor data), play a fundamental role in applications, including medical imaging …

[图书][B] Covariances in computer vision and machine learning

HQ Minh, V Murino - 2022 - books.google.com
Covariance matrices play important roles in many areas of mathematics, statistics, and
machine learning, as well as their applications. In computer vision and image processing …

Isotropically random orthogonal matrices: Performance of lasso and minimum conic singular values

C Thrampoulidis, B Hassibi - 2015 IEEE International …, 2015 - ieeexplore.ieee.org
Recently, the precise performance of the Generalized LASSO algorithm for recovering
structured signals from compressed noisy measurements, obtained via iid Gaussian …

Geometric optimization in machine learning

S Sra, R Hosseini - Algorithmic Advances in Riemannian Geometry and …, 2016 - Springer
Abstract Machine learning models often rely on sparsity, low-rank, orthogonality, correlation,
or graphical structure. The structure of interest in this chapter is geometric, specifically the …

Riemannian dictionary learning and sparse coding for positive definite matrices

A Cherian, S Sra - IEEE transactions on neural networks and …, 2016 - ieeexplore.ieee.org
Data encoded as symmetric positive definite (SPD) matrices frequently arise in many areas
of computer vision and machine learning. While these matrices form an open subset of the …

Positive definite matrices: data representation and applications to computer vision

A Cherian, S Sra - Algorithmic Advances in Riemannian Geometry and …, 2016 - Springer
Numerous applications in computer vision and machine learning rely on representations of
data that are compact, discriminative, and robust while satisfying several desirable …

[PDF][PDF] The multivariate Gaussian distribution

CB Do - Section Notes, Lecture on Machine Learning, CS, 2008 - alittlefrog.com
The Multivariate Gaussian Distribution Page 1 The Multivariate Gaussian Distribution Chuong
B. Do October 10, 2008 A vector-valued random variable X = [X1 ··· Xn] T is said to have a …

Information geometry of statistical inference-an overview

S Amari - Proceedings of the IEEE Information Theory …, 2002 - ieeexplore.ieee.org
The present paper gives a short introduction to information geometry, by using a simple
model of an exponential family which is a dually flat Riemannian space. The paper then …

Learning mixtures of spherical gaussians: moment methods and spectral decompositions

D Hsu, SM Kakade - Proceedings of the 4th conference on Innovations …, 2013 - dl.acm.org
This work provides a computationally efficient and statistically consistent moment-based
estimator for mixtures of spherical Gaussians. Under the condition that component means …