Total Kullback-Leibler (tKL) divergence center for a set of tensors

Find the center for a set of tensors based on total Kullback Leibler divergence.

This program finds the center for a set of tensors using tKL
References:

Baba C. Vemuri, Meizhu Liu, Shun-Ichi Amari and Frank Nielsen,
Total Bregman Divergence and its Applications to DTI Analysis,
IEEE Transactions on Medical Imaging (TMI'10), 2010.

Meizhu Liu, Baba C. Vemuri, Shun-Ichi Amari and Frank Nielsen,
Total Bregman Divergence and its Applications to Shape Retrieval,
IEEE Conference on Computer Vision and Pattern Recognition (CVPR’10),
2010.

If you use this code in any form, please cite the above papers.