Scale and curvature effects in principal geodesic analysis
Scale and curvature effects in principal geodesic analysis
复制标题
主测地线分析中的尺度和曲率效应
DOI:
10.1016/j.jmva.2016.09.009
复制
发表时间:
2017
影响因子:
1.6
通讯作者:
Lin, Lizhen
中科院分区:
文献类型:
--
作者:
Lazar, Drew;Lin, Lizhen
There is growing interest in using the close connection between differential geometry and statistics to model smooth manifold-valued data. In particular, much work has been done recently to generalize principal component analysis (PCA), the method of dimension reduction in linear spaces, to Riemannian manifolds. One such generalization is known as principal geodesic analysis (PGA). This paper, in a novel fashion, obtains Taylor expansions in scaling parameters introduced in the domain of objective functions in PGA. It is shown this technique not only leads to better closed-form approximations of PGA but also reveals the effects that scale, curvature and the distribution of data have on solutions to PGA and on their differences to first-order tangent space approximations. This approach should be able to be applied not only to PGA but also to other generalizations of PCA and more generally to other intrinsic statistics on Riemannian manifolds.
登录
查看更多内容
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
Denis Rancourt;Louis;Jérôme Asselin
通讯作者:
Jérôme Asselin
DOI:
10.1109/tpami.2009.117
发表时间:
2010
影响因子:
23.6
作者:
S. Huckemann;T. Hotz;A. Munk
通讯作者:
A. Munk
DOI:
--
发表时间:
2014
期刊:
The R Journal
影响因子:
--
作者:
B. Stanfill;H. Hofmann;Ulrike Genschel
通讯作者:
Ulrike Genschel
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
J. Eschenburg
通讯作者:
J. Eschenburg
DOI:
--
发表时间:
2007
期刊:
European Signal Processing Conference
影响因子:
--
作者:
S. Said;N. Courty;N. L. Bihan;S. Sangwine
通讯作者:
S. Sangwine