CUAMC @ MedExACT 2026: Robust Ensemble Voting for Fair Medical Decision Extraction

William Baumgartner, Lisa Schilling


Abstract
Automated extraction of medical decisions from clinical notes is a critical step to constructing more granular patient health trajectories than what is currently obtainable from structured healthcare data. Here we present a system designed for the MedExACT shared task that employs an ensemble of BERT-based classifiers to account for demographic diversity when extracting mentions of medical decisions from MIMIC-III discharge summaries. A simple voting strategy combined with architectural diversity is demonstrated to work best when training data is limited.
Anthology ID:
2026.bionlp-2.24
Volume:
Proceedings of the BioNLP 2026 (Shared Tasks)
Month:
July
Year:
2026
Address:
San Diego, California, USA
Editors:
Deepak Gupta, Dina Demner-Fushman
Venues:
BioNLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
171–178
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.bionlp-2.24/
DOI:
Bibkey:
Cite (ACL):
William Baumgartner and Lisa Schilling. 2026. CUAMC @ MedExACT 2026: Robust Ensemble Voting for Fair Medical Decision Extraction. In Proceedings of the BioNLP 2026 (Shared Tasks), pages 171–178, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
CUAMC @ MedExACT 2026: Robust Ensemble Voting for Fair Medical Decision Extraction (Baumgartner & Schilling, BioNLP 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.bionlp-2.24.pdf
Supplementarymaterial:
 2026.bionlp-2.24.SupplementaryMaterial.zip
Supplementarymaterial:
 2026.bionlp-2.24.SupplementaryMaterial.txt