What did you refer to? Evaluating Co-references in Dialogue

Existing neural end-to-end dialogue models have limitations on exactly interpreting the linguistic structures, such as ellipsis, anaphor and co-reference, etc., in dialogue history context. Therefore, it is hard to determine whether the dialogue models truly understand a dialogue or not, only depending on the coherence evaluation of their generated responses. To address these issues, in this paper, we proposed to directly measure the capability of dialogue models on understanding the entity-oriented structures via question answering and construct a new benchmark dataset, DEQA, including large-scale English and Chinese human-human dialogues. Experiments carried on representative dialogue models show that these models all face challenges on the proposed dialogue understanding task. The DEQA dataset will release for research use.