Longtonotes: OntoNotes with Longer Coreference Chains

Kumar Shridhar, Nicholas Monath, Raghuveer Thirukovalluru, Alessandro Stolfo, Manzil Zaheer, Andrew McCallum, Mrinmaya Sachan


Abstract
Ontonotes has served as the most important benchmark for coreference resolution. However, for ease of annotation, several long documents in Ontonotes were split into smaller parts. In this work, we build a corpus of coreference-annotated documents of significantly longer length than what is currently available. We do so by providing an accurate, manually-curated, merging of annotations from documents that were split into multiple parts in the original Ontonotes annotation process. The resulting corpus, which we call LongtoNotes contains documents in multiple genres of the English language with varying lengths, the longest of which are up to 8x the length of documents in Ontonotes, and 2x those in Litbank.We evaluate state-of-the-art neural coreference systems on this new corpus, analyze the relationships between model architectures/hyperparameters and document length on performance and efficiency of the models, and demonstrate areas of improvement in long-document coreference modelling revealed by our new corpus.
Anthology ID:
2023.findings-eacl.105
Volume:
Findings of the Association for Computational Linguistics: EACL 2023
Month:
May
Year:
2023
Address:
Dubrovnik, Croatia
Editors:
Andreas Vlachos, Isabelle Augenstein
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
1428–1442
Language:
URL:
https://aclanthology.org/2023.findings-eacl.105
DOI:
10.18653/v1/2023.findings-eacl.105
Bibkey:
Cite (ACL):
Kumar Shridhar, Nicholas Monath, Raghuveer Thirukovalluru, Alessandro Stolfo, Manzil Zaheer, Andrew McCallum, and Mrinmaya Sachan. 2023. Longtonotes: OntoNotes with Longer Coreference Chains. In Findings of the Association for Computational Linguistics: EACL 2023, pages 1428–1442, Dubrovnik, Croatia. Association for Computational Linguistics.
Cite (Informal):
Longtonotes: OntoNotes with Longer Coreference Chains (Shridhar et al., Findings 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.findings-eacl.105.pdf