How Reliable are AMR Parser Outputs? Uncertainty Estimation for AMR Parsing

Anuj Kumar, Shintaro Ozaki, Yamuna Prasad, Katsuhiko Hayashi, Hidetaka Kamigaito, Taro Watanabe


Abstract
Recent advances have significantly improved the performance of Abstract Meaning Representation (AMR) parsers, yet determining when their outputs can be trusted remains largely unexplored. This work presents the first study of uncertainty estimation for AMR parsers in a black-box setting using top-k beam-search candidates. Uncertainty is estimated from pairwise candidate similarities and evaluated using the Prediction Rejection Ratio. This work characterises the relationship between parsing performance and uncertainty, evaluates the reliability of beam candidate distributions, analyses the effect of evaluation metrics on uncertainty assessment, and identifies parsers that provide the strongest balance between performance and reliability. Experimental results show the value of uncertainty estimation as a complementary dimension for evaluating AMR parsers.
Anthology ID:
2026.emnlp-main.1365
Volume:
Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
EMNLP
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
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Pages:
31144–31159
Language:
URL:
https://aclanthology.org/2026.emnlp-main.1365/
DOI:
Bibkey:
Cite (ACL):
Anuj Kumar, Shintaro Ozaki, Yamuna Prasad, Katsuhiko Hayashi, Hidetaka Kamigaito, and Taro Watanabe. 2026. How Reliable are AMR Parser Outputs? Uncertainty Estimation for AMR Parsing. In Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing, pages 31144–31159, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
How Reliable are AMR Parser Outputs? Uncertainty Estimation for AMR Parsing (Kumar et al., EMNLP 2026)
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https://aclanthology.org/2026.emnlp-main.1365.pdf