LittleBird: Efficient Faster & Longer Transformer for Question Answering Minchul Lee author Kijong Han author Myeong Cheol Shin author 2022-12 text Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing Yoav Goldberg editor Zornitsa Kozareva editor Yue Zhang editor Association for Computational Linguistics Abu Dhabi, United Arab Emirates conference publication lee-etal-2022-littlebird 10.18653/v1/2022.emnlp-main.352 https://aclanthology.org/2022.emnlp-main.352/ 2022-12 5261 5277