CUNY at CLPsych 2026: A Pipeline Approach to Classification and Summarization of Mental Health Change

Amirmohammad Ziaei Bideh, Shameed Job, Ava Yahyapour, Alla Rozovskaya


Abstract
We describe our submission to the CLPsych 2026 Shared Task on capturing and characterizing mental health changes through social media timeline dynamics. To infer the dominant self-states in posts (Tasks 1.1 and 1.2), we ensemble in-context learning of three open-weight large language models using majority voting. For predicting moments of change in a timeline (Task 2), we train supervised classifiers on features derived from Task 1.1 predictions. To summarize the patterns of mood dynamics and their progression over time within a timeline (Task 3.1), we augment in-context example labels predicted by upstream systems (Tasks 1.1, 1.2, and 2), yielding performance gains over zero-shot and unaugmented in-context learning baselines. Our submission ranked first on Task 1.1, fourth on Task 1.2, fourth on Task 2, and third on Task 3.1.
Anthology ID:
2026.clpsych-1.35
Volume:
Proceedings of the 10th Workshop on Computational Linguistics and Clinical Psychology (CLPsych 2026)
Month:
July
Year:
2026
Address:
San Diego, California, USA
Editors:
Aya Zirikly, Kfir Bar, Sean MacAvaney, Molly Ireland, Yaakov Ophir, Dana Atzil-Slonim, Vasudha Varadarajan, Steven Bedrick, Bart Desmet
Venues:
CLPsych | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
441–457
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.clpsych-1.35/
DOI:
Bibkey:
Cite (ACL):
Amirmohammad Ziaei Bideh, Shameed Job, Ava Yahyapour, and Alla Rozovskaya. 2026. CUNY at CLPsych 2026: A Pipeline Approach to Classification and Summarization of Mental Health Change. In Proceedings of the 10th Workshop on Computational Linguistics and Clinical Psychology (CLPsych 2026), pages 441–457, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
CUNY at CLPsych 2026: A Pipeline Approach to Classification and Summarization of Mental Health Change (Ziaei Bideh et al., CLPsych 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.clpsych-1.35.pdf