t-SNE and variational auto-encoder with a bi-LSTM neural network-based model for prediction of gas concentration in a sealed-off area of underground coal mines. - Prasanjit Dey; K. Saurabh; Chandan Kumar; D. Pandit; Swades Kumar Chaulya; S. K. Ray; Girendra Mohan Prasad; S. K. Mandal (Soft Comput., 2021)