Joint Semantic Analysis with Document-Level Cross-Task Coherence Rewards

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Coreference resolution and semantic role labeling are NLP tasks that capture different aspects of semantics, indicating respectively, which expressions refer to the same entity, and what semantic roles expressions serve in the sentence. However, they are often closely interdependent, and both generally necessitate natural language understanding. Do they form a coherent abstract representation of documents? We present a neural network architecture for joint coreference resolution and semantic role labeling for English, and train graph neural networks to model the 'coherence' of the combined shallow semantic graph. Using the resulting coherence score as a reward for our joint semantic analyzer, we use reinforcement learning to encourage global coherence over the document and between semantic annotations. This leads to improvements on both tasks in multiple datasets from different domains, and across a range of encoders of different expressivity, calling, we believe, for a more holistic approach to semantics in NLP.
OriginalsprogEngelsk
TitelProceedings of the AAAI-21 International Joint Conference on Artificial Intelligence
Antal sider10
ForlagAAAI Press
Publikationsdato2021
ISBN (Elektronisk)978-1-57735-866-4
StatusUdgivet - 2021
Begivenhed35th AAAI Conference on Artificial Intelligence - Virtual
Varighed: 2 feb. 20219 feb. 2021

Konference

Konference35th AAAI Conference on Artificial Intelligence
ByVirtual
Periode02/02/202109/02/2021
NavnProceedings of the International Joint Conference on Artificial Intelligence
Nummer14
Vol/bind35
ISSN1045-0823

ID: 287187332