T5 및 mT5

T5: https://arxiv.org/pdf/1910.10683.pdf
T5 블로그:  https://ai.googleblog.com/2020/02/exploring-transfer-learning-with-t5.html
mT5:  https://arxiv .org/pdf/2010.11934.pdf
mT5 코드:  https://github.com/google-research/multilingual-t5

배경

Bert와 GPT2 이후 각각