Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Power Euclidean metrics for covariance matrices with application to
  diffusion tensor imaging   Various metrics for comparing diffusion tensors have been recently proposed
in the literature. We consider a broad family of metrics which is indexed by a
single power parameter. A likelihood-based procedure is developed for choosing
the most appropriate metric from the family for a given dataset at hand. The
approach is analogous to using the Box-Cox transformation that is frequently
investigated in regression analysis. The methodology is illustrated with a
simulation study and an application to a real dataset of diffusion tensor
images of canine hearts.

20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an