Reading Between the Lines: The One-Sided Conversation Problem
Victoria Ebert, Rishabh Singh, Tuochao Chen, Noah A. Smith, Shyamnath Gollakota
Abstract
Conversational AI is constrained in many real-world settings where only one side of a dialogue can be recorded. We formalize the one-sided conversation problem (1SC): inferring and learning from only one side of a conversation. We study two tasks: (1) reconstructing the missing speaker’s turns and (2) generating summaries from one-sided transcripts. Evaluating models on MultiWOZ, DailyDialog, SpokenWOZ and Candor with both human A/B testing and LLM-as-a-judge metrics, we find that additional context improves reconstruction, and while large models generate promising reconstructions with prompting, smaller models require finetuning. Further, high-quality summaries can be generated without reconstructing missing turns. We present 1SC as a novel challenge and report promising results that mark a step toward privacy-aware conversational AI.- Anthology ID:
- 2026.findings-acl.1757
- Volume:
- Findings of the Association for Computational Linguistics: ACL 2026
- Month:
- July
- Year:
- 2026
- Address:
- San Diego, California, United States
- Editors:
- Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
- Venue:
- Findings
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 35227–35260
- Language:
- URL:
- https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1757/
- DOI:
- Cite (ACL):
- Victoria Ebert, Rishabh Singh, Tuochao Chen, Noah A. Smith, and Shyamnath Gollakota. 2026. Reading Between the Lines: The One-Sided Conversation Problem. In Findings of the Association for Computational Linguistics: ACL 2026, pages 35227–35260, San Diego, California, United States. Association for Computational Linguistics.
- Cite (Informal):
- Reading Between the Lines: The One-Sided Conversation Problem (Ebert et al., Findings 2026)
- PDF:
- https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1757.pdf