split unknown only when extracting train dataset

decoder/src/Decoder.cpp

reading_machine/include/ReadingMachine.hpp

reading_machine/src/ReadingMachine.cpp

torch_modules/include/ContextLSTM.hpp

torch_modules/include/DepthLayerTreeEmbedding.hpp

torch_modules/include/FocusedColumnLSTM.hpp

torch_modules/include/NeuralNetwork.hpp

torch_modules/include/RawInputLSTM.hpp

torch_modules/include/SplitTransLSTM.hpp

torch_modules/include/Submodule.hpp

torch_modules/src/ContextLSTM.cpp

torch_modules/src/DepthLayerTreeEmbedding.cpp

torch_modules/src/FocusedColumnLSTM.cpp

torch_modules/src/LSTMNetwork.cpp

torch_modules/src/NeuralNetwork.cpp

torch_modules/src/RawInputLSTM.cpp

torch_modules/src/SplitTransLSTM.cpp

trainer/src/Trainer.cpp