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Chenxiao Dou

2 accepted papers

2023

Domain-Adapted Dependency Parsing for Cross-Domain Named Entity Recognition

AAAI 2023technical

In recent years, many researchers have leveraged structural information from dependency trees to improve Named Entity Recognition (NER). Most of their methods take dependency-tree labels as input features for NER model training. However, such dependency information is not inherently provided in most…

2022

To Answer or Not To Answer? Improving Machine Reading Comprehension Model with Span-based Contrastive Learning

NAACL 2022findings

Machine Reading Comprehension with Unanswerable Questions is a difficult NLP task, challenged by the questions which can not be answered from passages. It is observed that subtle literal changes often make an answerable question unanswerable, however, most MRC models fail to recognize such changes.…