Hierarchical Context Tagging for Utterance Rewriting. (arXiv:2206.11218v1 [cs.CL])

Web: http://arxiv.org/abs/2206.11218

Utterance rewriting aims to recover coreferences and omitted information from
the latest turn of a multi-turn dialogue. Recently, methods that tag rather
than linearly generate sequences have proven stronger in both in- and
out-of-domain rewriting settings. This is due to a tagger's smaller search
space as it can only copy tokens from the dialogue context. However, these
methods may suffer from low coverage when phrases that must be added to a
source utterance cannot be covered by a single context …

arxiv context hierarchical tagging