A differential geometric approach to the geometric mean of symmetric positive-definite matrices
A differential geometric approach to the geometric mean of symmetric positive-definite matrices
复制标题
DOI:
10.1137/s0895479803436937
复制
发表时间:
2005-01-01
影响因子:
1.5
通讯作者:
Moakher, M
中科院分区:
文献类型:
--
作者:
Moakher, M
In this paper we introduce metric-based means for the space of positive-definite matrices. The mean associated with the Euclidean metric of the ambient space is the usual arithmetic mean. The mean associated with the Riemannian metric corresponds to the geometric mean. We discuss some invariance properties of the Riemannian mean and we use differential geometric tools to give a characterization of this mean.