Serban, Iulian, Alessandro Sordoni, Yoshua Bengio, Aaron Courville, and Joelle Pineau. 2016. “Building End-To-End Dialogue Systems Using Generative Hierarchical Neural Network Models”. Proceedings of the AAAI Conference on Artificial Intelligence 30 (1). https://doi.org/10.1609/aaai.v30i1.9883.