"CNN/CNN.py" is CNN network used for identification.
"LSTMs" is LSTM networks used for identification, including single-layer LSTM, double-layer LSTM, and bi-directional LSTM.
"CNN/CNN-LSTM.py" is network of "CNN+LSTM" method used for identification.
"CNN/cnn_fix.py" is network of "CNNfix+LSTM" method used for identification."cnn_ckpt" is  the pre-trained CNN model corresponding to "CNNfix+LSTM" method.
"CNN/lstm_fix.py" is network of "CNN+LSTMfix" method used for identification."lstm_1024_ckpt" is  the pre-trained LSTM model corresponding to "CNN+LSTMfix" method.