Just an intro more papers and technical details below:
https://arxiv.org/abs/1904.06690
https://ai.googleblog.com/2015/11/computer-respond-to-this-email.html https://arxiv.org/abs/1510.03055 https://arxiv.org/abs/1610.02424
https://arxiv.org/abs/1503.02531 https://arxiv.org/abs/1910.01108
https://arxiv.org/abs/1711.00043 Unsupervised Machine Learning Using Monolingual corpora only