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    <abstract>Failure-based textual knowledge distillation aims to discover gaps in a model’s knowledge by examining its task errors. The distilled knowledge can be useful for the reasoning of both this model (“source model”) and other models. However, this transfer of knowledge may not be stable. We define a rule atom to be a standalone rule injected into a model’s textual input at inference time. A rule atom can encode transferable task knowledge or model-specific reasoning patches that can confuse other models. Also, the injected rule atoms can be misapplied to unrelated cases, causing the model to incorrectly flip its answer based on irrelevant information. Building on a pipeline that distills training examples into task-specific cheat sheets that aid model reasoning, we examine when failure-derived rules can improve these cheat sheets. Our early experiment shows rule distillation from a single model’s failures underperforms the baseline cheat sheet on non-source model families. This motivates Robust Failure, Conservative Repair (RFCR), a textual distillation procedure that derives rules from failures shared across models, sharpens their application boundaries using boundary cases, and abstains when no useful rule is found. On a 400-item BIG-Bench Hard task set, RFCR improves the baseline cheat sheets from 68.50% to 71.25% (+2.75 pp; 95% CI [+1.25,+4.50]) without performance degradation on previously correct cases. Ablations and cross-model diagnostics support that accuracy gains come from both new knowledge injection and strict rule-application control.</abstract>
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%0 Conference Proceedings
%T Robust Failure, Conservative Repair: Textual Knowledge Distillation from Cross-Model Failures
%A Ren, Andrew
%A Liu, Haokun
%A Tan, Chenhao
%Y Lee, Hung-Yi
%Y Dev, Sunipa
%Y Li, Jessy
%Y Elliott, Desmond
%S Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing
%D 2026
%8 October
%I Association for Computational Linguistics
%C Budapest, Hungary
%@ 979-8-89176-459-0
%F ren-etal-2026-robust
%X Failure-based textual knowledge distillation aims to discover gaps in a model’s knowledge by examining its task errors. The distilled knowledge can be useful for the reasoning of both this model (“source model”) and other models. However, this transfer of knowledge may not be stable. We define a rule atom to be a standalone rule injected into a model’s textual input at inference time. A rule atom can encode transferable task knowledge or model-specific reasoning patches that can confuse other models. Also, the injected rule atoms can be misapplied to unrelated cases, causing the model to incorrectly flip its answer based on irrelevant information. Building on a pipeline that distills training examples into task-specific cheat sheets that aid model reasoning, we examine when failure-derived rules can improve these cheat sheets. Our early experiment shows rule distillation from a single model’s failures underperforms the baseline cheat sheet on non-source model families. This motivates Robust Failure, Conservative Repair (RFCR), a textual distillation procedure that derives rules from failures shared across models, sharpens their application boundaries using boundary cases, and abstains when no useful rule is found. On a 400-item BIG-Bench Hard task set, RFCR improves the baseline cheat sheets from 68.50% to 71.25% (+2.75 pp; 95% CI [+1.25,+4.50]) without performance degradation on previously correct cases. Ablations and cross-model diagnostics support that accuracy gains come from both new knowledge injection and strict rule-application control.
%U https://aclanthology.org/2026.emnlp-main.990/
%P 22806-22821

Markdown (Informal)

[Robust Failure, Conservative Repair: Textual Knowledge Distillation from Cross-Model Failures](https://aclanthology.org/2026.emnlp-main.990/) (Ren et al., EMNLP 2026)

• Robust Failure, Conservative Repair: Textual Knowledge Distillation from Cross-Model Failures (Ren et al., EMNLP 2026)

ACL

• Andrew Ren, Haokun Liu, and Chenhao Tan. 2026. Robust Failure, Conservative Repair: Textual Knowledge Distillation from Cross-Model Failures. In Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing, pages 22806–22821, Budapest, Hungary. Association for Computational Linguistics.