Lecture 20 (12/05/2020, Google meet, 2 hours): XLM, XLNet, RoBERTa; Natural Language Understanding: Semantic Role Labeling; homework

XLNet, RoBERTa, XLM, XLM-R. The GLUE and SuperGLUE benchmarks. Introduction to Natural Language Understanding (NLU): Word Sense Disambiguation, Semantic Role Labeling, Semantic Parsing.