Dialogue systems in open domain have achieved great success due to the easily obtained single-turn corpus and the development of deep learning, but the multi-turn scenario is still a challenge because of the frequent coreference and information omission. In this paper, we investigate the incomplete utterance restoration which has brought general improvement over multi-turn dialogue systems in recent studies. Meanwhile, jointly inspired by the autoregression for text generation and the sequence labeling for text editing, we propose a novel semi autoregressive generator (SARG) with the high efficiency and flexibility. Moreover, experiments on two benchmarks show that our proposed model significantly outperforms the state-of-the-art models in terms of quality and inference speed.
@article{arxiv.2008.01474,
title = {SARG: A Novel Semi Autoregressive Generator for Multi-turn Incomplete Utterance Restoration},
author = {Mengzuo Huang and Feng Li and Wuhe Zou and Weidong Zhang},
journal= {arXiv preprint arXiv:2008.01474},
year = {2020}
}