@inproceedings{pedersen-2026-duluth,
title = "{D}uluth at {S}em{E}val-2026 Task 6: {D}e{BERT}a with {LLM}-Augmented Data for Unmasking Political Question Evasions",
author = "Pedersen, Ted",
editor = "Kochmar, Ekaterina and
Ghosh, Debanjan and
North, Kai and
Komachi, Mamoru",
booktitle = "Proceedings of the 20th {I}nternational {W}orkshop on {S}emantic {E}valuation (2026)",
month = jul,
year = "2026",
address = "San Diego, California, USA",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2026.semeval-1.94/",
pages = "650--657",
ISBN = "979-8-89176-414-9",
abstract = "This paper presents the Duluth approach toSemEval-2026 Task 6 on CLARITY: Unmask-ing Political Question Evasions. We addressTask 1 (clarity-level classification) and Task 2(evasion-level classification), both of which in-volve classifying question{--}answer pairs fromU.S. presidential interviews using a two-leveltaxonomy of response clarity. Our system isbased on DeBERTa-V3-base, extended withfocal loss, layer-wise learning rate decay, andboolean discourse features. To address classimbalance in the training data, we augmentminority classes using synthetic examples gen-erated by Gemini 3 and Claude Sonnet 4.5. Ourbest configuration achieved a Macro F1 of 0.76on the Task 1 evaluation set, placing 8th outof 40 teams. The top-ranked system (TeleAI)achieved 0.89, while the mean score across par-ticipants was 0.70. Error analysis reveals thatthe dominant source of misclassification is con-fusion between Ambivalent and Clear Replyresponses, a pattern that mirrors disagreementsamong human annotators. Our findings demon-strate that LLM-based data augmentation canmeaningfully improve minority-class recall onnuanced political discourse tasks."
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<abstract>This paper presents the Duluth approach toSemEval-2026 Task 6 on CLARITY: Unmask-ing Political Question Evasions. We addressTask 1 (clarity-level classification) and Task 2(evasion-level classification), both of which in-volve classifying question–answer pairs fromU.S. presidential interviews using a two-leveltaxonomy of response clarity. Our system isbased on DeBERTa-V3-base, extended withfocal loss, layer-wise learning rate decay, andboolean discourse features. To address classimbalance in the training data, we augmentminority classes using synthetic examples gen-erated by Gemini 3 and Claude Sonnet 4.5. Ourbest configuration achieved a Macro F1 of 0.76on the Task 1 evaluation set, placing 8th outof 40 teams. The top-ranked system (TeleAI)achieved 0.89, while the mean score across par-ticipants was 0.70. Error analysis reveals thatthe dominant source of misclassification is con-fusion between Ambivalent and Clear Replyresponses, a pattern that mirrors disagreementsamong human annotators. Our findings demon-strate that LLM-based data augmentation canmeaningfully improve minority-class recall onnuanced political discourse tasks.</abstract>
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%0 Conference Proceedings
%T Duluth at SemEval-2026 Task 6: DeBERTa with LLM-Augmented Data for Unmasking Political Question Evasions
%A Pedersen, Ted
%Y Kochmar, Ekaterina
%Y Ghosh, Debanjan
%Y North, Kai
%Y Komachi, Mamoru
%S Proceedings of the 20th International Workshop on Semantic Evaluation (2026)
%D 2026
%8 July
%I Association for Computational Linguistics
%C San Diego, California, USA
%@ 979-8-89176-414-9
%F pedersen-2026-duluth
%X This paper presents the Duluth approach toSemEval-2026 Task 6 on CLARITY: Unmask-ing Political Question Evasions. We addressTask 1 (clarity-level classification) and Task 2(evasion-level classification), both of which in-volve classifying question–answer pairs fromU.S. presidential interviews using a two-leveltaxonomy of response clarity. Our system isbased on DeBERTa-V3-base, extended withfocal loss, layer-wise learning rate decay, andboolean discourse features. To address classimbalance in the training data, we augmentminority classes using synthetic examples gen-erated by Gemini 3 and Claude Sonnet 4.5. Ourbest configuration achieved a Macro F1 of 0.76on the Task 1 evaluation set, placing 8th outof 40 teams. The top-ranked system (TeleAI)achieved 0.89, while the mean score across par-ticipants was 0.70. Error analysis reveals thatthe dominant source of misclassification is con-fusion between Ambivalent and Clear Replyresponses, a pattern that mirrors disagreementsamong human annotators. Our findings demon-strate that LLM-based data augmentation canmeaningfully improve minority-class recall onnuanced political discourse tasks.
%U https://aclanthology.org/2026.semeval-1.94/
%P 650-657
Markdown (Informal)
[Duluth at SemEval-2026 Task 6: DeBERTa with LLM-Augmented Data for Unmasking Political Question Evasions](https://aclanthology.org/2026.semeval-1.94/) (Pedersen, SemEval 2026)
ACL