Neighboring Words Affect Human Interpretation of Saliency Explanations

Alon Jacovi, Hendrik Schuff, Heike Adel, Ngoc Thang Vu, Yoav Goldberg


Abstract
Word-level saliency explanations (“heat maps over words”) are often used to communicate feature-attribution in text-based models. Recent studies found that superficial factors such as word length can distort human interpretation of the communicated saliency scores. We conduct a user study to investigate how the marking of a word’s *neighboring words* affect the explainee’s perception of the word’s importance in the context of a saliency explanation. We find that neighboring words have significant effects on the word’s importance rating. Concretely, we identify that the influence changes based on neighboring direction (left vs. right) and a-priori linguistic and computational measures of phrases and collocations (vs. unrelated neighboring words).Our results question whether text-based saliency explanations should be continued to be communicated at word level, and inform future research on alternative saliency explanation methods.
Anthology ID:
2023.findings-acl.750
Volume:
Findings of the Association for Computational Linguistics: ACL 2023
Month:
July
Year:
2023
Address:
Toronto, Canada
Editors:
Anna Rogers, Jordan Boyd-Graber, Naoaki Okazaki
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
11816–11833
Language:
URL:
https://aclanthology.org/2023.findings-acl.750
DOI:
10.18653/v1/2023.findings-acl.750
Bibkey:
Cite (ACL):
Alon Jacovi, Hendrik Schuff, Heike Adel, Ngoc Thang Vu, and Yoav Goldberg. 2023. Neighboring Words Affect Human Interpretation of Saliency Explanations. In Findings of the Association for Computational Linguistics: ACL 2023, pages 11816–11833, Toronto, Canada. Association for Computational Linguistics.
Cite (Informal):
Neighboring Words Affect Human Interpretation of Saliency Explanations (Jacovi et al., Findings 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.findings-acl.750.pdf
Video:
 https://aclanthology.org/2023.findings-acl.750.mp4