DM Doppelgangers: Implicit Connectives as eRST Signals

Lin Ai, Amir Zeldes


Abstract
Recent work representing discourse relations such as "cause" or "concession" in the framework of eRST has connected hierarchical discourse parsing to explicit connectives, such as ’because’ or ’although’, bringing the framework closer to lexicalized shallow parsing in the tradition of PDTB. However, while PDTB postulates implicit, unexpressed connectives (i.e. an implied ’although’ etc.), no such devices are recognized in eRST, and consequently next to nothing is known about the relationship between PDTB-style implicit connectives and eRST-style discourse graphs. In this paper we propose and evaluate an algorithm to align eRST data, which already indicates explicit connectives, to implicit connective annotations following the PDTB guidelines. We also conduct the first evaluation of the relationship between hierarchical RST-style relations and PDTB implicit connectives.
Anthology ID:
2026.codi-1.6
Volume:
Proceedings of the 2nd Joint Workshop on Computational Approaches to Discourse, Context and Document-Level Inferences and Computational Models of Reference, Anaphora and Coreference (CODI-CRAC 2026)
Month:
July
Year:
2026
Address:
San Diego, California, USA
Editors:
Chloé Braud, Christian Hardmeier, Maciej Ogrodniczuk, Sharid Loaiciga, Amir Zeldes, Michal Novák, Chuyuan Li, Michael Strube, Junyi Jessy Li
Venues:
CODI | CRAC | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
29–39
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.codi-1.6/
DOI:
Bibkey:
Cite (ACL):
Lin Ai and Amir Zeldes. 2026. DM Doppelgangers: Implicit Connectives as eRST Signals. In Proceedings of the 2nd Joint Workshop on Computational Approaches to Discourse, Context and Document-Level Inferences and Computational Models of Reference, Anaphora and Coreference (CODI-CRAC 2026), pages 29–39, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
DM Doppelgangers: Implicit Connectives as eRST Signals (Ai & Zeldes, CODI-CRAC 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.codi-1.6.pdf