@INPROCEEDINGS {28515,
author={Z.  Xu and M. A. T. Figueiredo and T.  Goldstein},
doi={},
booktitle={International Conf. on Artificial Intelligence and Statistics - AISTATS},
title={Adaptive ADMM with Spectral Penalty Parameter Selection},
year={2017},
month={April},
volume={N/A},
pages={---} 
}