Global divergence and local convergence of utterance semantic representations in dialogue Yang Xu author 2021-02 text Proceedings of the Society for Computation in Linguistics 2021 Allyson Ettinger editor Ellie Pavlick editor Brandon Prickett editor Association for Computational Linguistics Online conference publication xu-2021-global https://aclanthology.org/2021.scil-1.11/ 2021-02 116 124