ClarVis: A Dataset of Clarification Requests and Grounding in Collaborative Data Visualization Dialogues

Abari Bhattacharya, Barbara Di Eugenio


Abstract
Clarification Requests (CRs) play a crucial role in human communication. However, existing datasets are often limited to single-turn clarifications or simulated tasks. We present a novel task-oriented dialogue dataset, ClarVis, of CRs collected from real-time multi-user collaborative data-exploration sessions, where users analyze data together while interacting with a visualization-generating conversational assistant. This dataset fills important gaps in current CR datasets by identifying naturally occurring CRs grounded by real-world modalities like hearing, vision, and actions in the physical environment. Our dataset includes 6.3K utterances across collaborative tasks, where each CR is annotated with a grounding modality - Auditory (A), Visual (V), or Kinesthetic (K) - that captures the context the clarification pertains to. Further, we establish benchmark tasks for CR identification and grounding-modality classification, and evaluate them with traditional machine learning models as well as instruction-tuned large language models. The results highlight both the learnability and the difficulty of these tasks, and position ClarVis as a useful resource for studying clarifications in collaborative dialogue settings.
Anthology ID:
2026.sigdial-1.6
Volume:
Proceedings of the 27th Annual Meeting of the Special Interest Group on Discourse and Dialogue
Month:
August
Year:
2026
Address:
Atlanta, Georgia, USA
Editors:
Jinho D. Choi, Yun-Nung Chen, Kotaro Funakoshi, Ali Emami
Venue:
SIGDIAL
SIG:
SIGDIAL
Publisher:
Association for Computational Linguistics
Note:
Pages:
79–90
Language:
URL:
https://aclanthology.org/2026.sigdial-1.6/
DOI:
Bibkey:
Cite (ACL):
Abari Bhattacharya and Barbara Di Eugenio. 2026. ClarVis: A Dataset of Clarification Requests and Grounding in Collaborative Data Visualization Dialogues. In Proceedings of the 27th Annual Meeting of the Special Interest Group on Discourse and Dialogue, pages 79–90, Atlanta, Georgia, USA. Association for Computational Linguistics.
Cite (Informal):
ClarVis: A Dataset of Clarification Requests and Grounding in Collaborative Data Visualization Dialogues (Bhattacharya & Di Eugenio, SIGDIAL 2026)
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https://aclanthology.org/2026.sigdial-1.6.pdf