Paul A. Viola Nicol N. Schraudolph Terrence J. Sejnowski 851-857 http://papers.nips.cc/paper/1040-empirical-entropy-manipulation-for-real-world-problems http://nips.djvuzone.org/djvu/nips08/0851.djvu 1995 conf/nips/1995 NIPS db/conf/nips/nips1995.html#ViolaSS95