Generative Dialog System and Chatbot with PyTorch Implemented with PyTorch based on RNN, Transformer, Bert and GPT2. NLP Deep Learning 1. ChatBot (Dialog System) based on RNN 2. ChatBot (Dialog System) based on Transformer and Bert 3. ChatBot (Dialog System) based on Bert and GPT2 Reference https://pytorch.org/tutorials https://github.com/bentrevett/pytorch-seq2seq https://github.com/huggingface/transformers