Do I know what I want to say? Modeling meaning uncertainty in RSA

Anzi Wang, Carolyn Jane Anderson, Grusha Prasad


Abstract
Models using the Rational Speech Act (RSA) framework typically assume that speakers are certain about the meaning being communicated. In this work we note that there are contexts in which this assumption does not hold, and propose a method (um-RSA) to incorporate this meaning uncertainty within the RSA framework. As a case study, we explore two sources of meaning uncertainty: Counting-Uncertainty (from numerical cognition) and Discounting-Uncertainty (from behavioral economics). We generate predictions from these two hypotheses and test these predictions with two human experiments. The results show that um-RSA can account for differences in uncertainty expression usage that the standard RSA framework cannot account for, thus demonstrating the usefulness of modeling meaning uncertainty.
Anthology ID:
2026.scil-main.29
Volume:
Proceedings of the Society for Computation in Linguistics 2026
Month:
July
Year:
2026
Address:
San Diego, CA
Editors:
Rob Voigt, Alex Warstadt, Naomi Feldman, Tal Linzen
Venues:
SCiL | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
313–328
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.scil-main.29/
DOI:
Bibkey:
Cite (ACL):
Anzi Wang, Carolyn Jane Anderson, and Grusha Prasad. 2026. Do I know what I want to say? Modeling meaning uncertainty in RSA. In Proceedings of the Society for Computation in Linguistics 2026, pages 313–328, San Diego, CA. Association for Computational Linguistics.
Cite (Informal):
Do I know what I want to say? Modeling meaning uncertainty in RSA (Wang et al., SCiL 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.scil-main.29.pdf