Don't `Well, Actually' Me Unless You Know What You're Talking About: Weak Presupposition Verification Degrades General QA Performance

arXiv:2608.06539 · cs.CL · Submitted 2026-08-06 · Read on arXiv

Shenran Wang, Vered Shwartz, Hila Gonen

cs.CL

Submitted: 2026-08-06

Updated: 2026-08-10

Code: https://github.com/ShenranTomWang/Well

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• RAG — 36× in this paper · explained in 3 episodes
• Benchmark — 25× in this paper · explained in 2 episodes
• Accuracy — 18× in this paper · explained in 1 episode
• LLM judge — 9× in this paper · explained in 2 episodes
• Papers — 8× in this paper · explained in 3 episodes
• Verification — 7× in this paper · explained in 2 episodes
• Fine-Tuning — 5× in this paper · explained in 5 episodes
• Hallucination — 4× in this paper · explained in 4 episodes
• EMMA — 3× in this paper · explained in 2 episodes
• Trace — 3× in this paper · explained in 2 episodes
• Knowledge Graph — 2× in this paper · explained in 8 episodes
• LLM-as-a-Judge — 2× in this paper · explained in 4 episodes
• Ablation — 1× in this paper · explained in 1 episode
• Ablation Studies — 1× in this paper · explained in 1 episode
• Abstention — 1× in this paper · explained in 1 episode
• Actor — 1× in this paper · explained in 3 episodes
• Benchmarking — 1× in this paper · explained in 4 episodes
• Foundation Model — 1× in this paper · explained in 3 episodes
• Foundation Models — 1× in this paper · explained in 8 episodes
• Grounding — 1× in this paper · explained in 3 episodes
• Hyperparameters — 1× in this paper · explained in 2 episodes
• Interpretability — 1× in this paper · explained in 15 episodes
• Knowledge graphs — 1× in this paper · explained in 2 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Resource Constraints — 1× in this paper · explained in 5 episodes
• Sycophancy — 1× in this paper · explained in 5 episodes
• Transferability — 1× in this paper · explained in 5 episodes

Sources

• Think you have Solved Direct-Answer Question Answering? Try ARC-DA, the Direct-Answer AI2 Reasoning Challenge
• Med42-v2: A Suite of Clinical LLMs
• Syn-QA2: Evaluating False Assumptions in Long-tail Questions with Synthetic QA Datasets
• The Llama 3 Herd of Models
• PhantomBench: Benchmarking the Non-existential Threat of Language Models
• Olmo 3
• Qwen2.5 Technical Report
• Gemma 3 Technical Report
• Two Axes of LLM Abstention: Answer Correctness and Question Answerability
• Qwen3 Embedding: Advancing Text Embedding and Reranking Through Foundation Models
• WildChat: 1M ChatGPT Interaction Logs in the Wild

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