{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/thunder-nubench-a-benchmark-for-llms-sentence","title":"Thunder-NUBench: A Benchmark for LLMs' Sentence-Level Negation Understanding","arxiv_id":"2506.14397","date":"2025-06-17","proceeding":null,"authors":["Yeonkyoung So","Gyuseong Lee","Sungmok Jung","Joonhak Lee","JiA Kang","Sangho Kim","Jaejin Lee"],"abstract":"Negation is a fundamental linguistic phenomenon that poses persistent challenges for Large Language Models (LLMs), particularly in tasks requiring deep semantic understanding. Existing benchmarks often treat negation as a side case within broader tasks like natural language inference, resulting in a lack of benchmarks that exclusively target negation understanding. In this work, we introduce \\textbf{Thunder-NUBench}, a novel benchmark explicitly designed to assess sentence-level negation understanding in LLMs. Thunder-NUBench goes beyond surface-level cue detection by contrasting standard negation with structurally diverse alternatives such as local negation, contradiction, and paraphrase. The benchmark consists of manually curated sentence-negation pairs and a multiple-choice dataset that enables in-depth evaluation of models' negation understanding.","url_abs":"https://arxiv.org/abs/2506.14397v1","url_pdf":"https://arxiv.org/pdf/2506.14397v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"abstracts"},"code_links":[],"tasks":[{"task_slug":"multiple-choice","task_name":"Multiple-choice"},{"task_slug":"natural-language-inference","task_name":"Natural Language Inference"},{"task_slug":"negation","task_name":"Negation"},{"task_slug":"sentence","task_name":"Sentence"}],"methods":[],"datasets_introduced":[{"slug":"thunder-nubench","name":"Thunder-NUBench","full_name":""}],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}