Evaluating Multi-turn Human-AI Interaction

Shi Ding, Sijian Tan


Abstract
Large language models (LLMs) are increasingly used as collaborative assistants, yet dominant NLP evaluation practices remain centered on aggregate metrics such as accuracy and fluency. These approaches often overlook behaviors that are critical in human-facing settings (e.g., consistency across multiple turns and iterative refinement). In this paper, we examine limitations of current NLP evaluation practices and introduce TCR, a structured framework for evaluating human–AI interaction using educational LLM assistants as an illustrative example. TCR emphasizes dimensions such as transparency, consistency, and refinement. We further present structured evaluation prompts and illustrative interaction examples demonstrating how structured evaluation can complement aggregate metrics and LLM-as-a-judge approaches. Our work highlights the need for more human-centered evaluation practices for interactive LLM systems.
Anthology ID:
2026.evaleval-1.2
Volume:
Proceedings of the Workshop on Evaluating Evaluations (EvalEval)
Month:
July
Year:
2026
Address:
San Diego, CA
Editors:
Mubashara Akhtar, Jan Batzner, Leshem Choshen, Avijit Ghosh, Usman Gohar, Jennifer Mickel, Ichhya Pant, Zeerak Talat, Michelle Lin
Venues:
EvalEval | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
12–18
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.evaleval-1.2/
DOI:
Bibkey:
Cite (ACL):
Shi Ding and Sijian Tan. 2026. Evaluating Multi-turn Human-AI Interaction. In Proceedings of the Workshop on Evaluating Evaluations (EvalEval), pages 12–18, San Diego, CA. Association for Computational Linguistics.
Cite (Informal):
Evaluating Multi-turn Human-AI Interaction (Ding & Tan, EvalEval 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.evaleval-1.2.pdf