Conflict of Interest The authors declare no conflict of interest. References 1, , , Nature 2015, 521, 436. 2, , , in Deep Learning, Vol. 1, MIT press, Cambridge, MA 2017. 3, , , , Proc. IEEE 1998, 86, 2278. 4, , presented at Int. Conference on Communication and Signal Processing (ICCSP), Chennai, India, April 2017. 5, , , presented at Advances in Neural Information Processing Systems (NIPS), Nevada, USA, December 2012. 6, , arXiv:1409.1556, 2015. 7, , , , , , , , , presented at IEEE Conf.
