Measuring Sentence-Level and Aspect-Level (Un)certainty in Science Communications

Jiaxin Pei, David Jurgens


Abstract
Certainty and uncertainty are fundamental to science communication. Hedges have widely been used as proxies for uncertainty. However, certainty is a complex construct, with authors expressing not only the degree but the type and aspects of uncertainty in order to give the reader a certain impression of what is known. Here, we introduce a new study of certainty that models both the level and the aspects of certainty in scientific findings. Using a new dataset of 2167 annotated scientific findings, we demonstrate that hedges alone account for only a partial explanation of certainty. We show that both the overall certainty and individual aspects can be predicted with pre-trained language models, providing a more complete picture of the author’s intended communication. Downstream analyses on 431K scientific findings from news and scientific abstracts demonstrate that modeling sentence-level and aspect-level certainty is meaningful for areas like science communication. Both the model and datasets used in this paper are released at https://blablablab.si.umich.edu/projects/certainty/.
Anthology ID:
2021.emnlp-main.784
Volume:
Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing
Month:
November
Year:
2021
Address:
Online and Punta Cana, Dominican Republic
Editors:
Marie-Francine Moens, Xuanjing Huang, Lucia Specia, Scott Wen-tau Yih
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
9959–10011
Language:
URL:
https://aclanthology.org/2021.emnlp-main.784
DOI:
10.18653/v1/2021.emnlp-main.784
Bibkey:
Cite (ACL):
Jiaxin Pei and David Jurgens. 2021. Measuring Sentence-Level and Aspect-Level (Un)certainty in Science Communications. In Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, pages 9959–10011, Online and Punta Cana, Dominican Republic. Association for Computational Linguistics.
Cite (Informal):
Measuring Sentence-Level and Aspect-Level (Un)certainty in Science Communications (Pei & Jurgens, EMNLP 2021)
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PDF:
https://aclanthology.org/2021.emnlp-main.784.pdf
Video:
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