faster BatchLoaderUnk
faster BatchLoaderUnk


Former-commit-id: 5381f4a27d029dec6127b37f4948f8a2c3135348
ZhouJiaLinmumu/lstm-char-cnn,yoonkim/word-char-rnn,yoonkim/lstm-char-cnn,pengsun/lstm-char-cnn,carpedm20/lstm-char-cnn,fiskio/lstm-char-cnn,wavelets/lstm-char-cnn