14-10-19 Zeng xy
1.learned about basic asr and some hot researches of tis field in teacher Wang's class
2.find that there's a error in the work of last week-dropout, debug it and run again
3.there's still nan error when we run dropout-0.6 again, we think that it's caused by gpu and will run again.
2.dropout incremental train(trained xEnt)
3.draft weight distribution (dropout DNN)