LLM Grounding

LLM: Large Language Model

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25 papers in the last four weeks, up 127% on the four weeks before. 0.2% of all new papers.

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Why LLMs Hallucinate on Structured Knowledge: A Mechanistic Analysis of Reasoning over Linearized Representations
May 25, 2026Shanghao Li, Jinda Han, Yibo Wang +5LLM Grounding LLM Interpretability
University of Illinois Chicago · University of Illinois Urbana-Champaign
Teaching Through Analogies: A Modular Pipeline for Educational Analogy Generation
May 22, 2026Mariam Barakat, Ekaterina KochmarLLM Evaluation LLM Grounding
Mohamed bin Zayed University of Artificial Intelligence, UAE
Graph Alignment Topology as an Inductive Bias for Grounding Detection
May 21, 2026Paul Landes, Pranav Herur, Adam Cross +1LLM Grounding Hallucination in Language Models
†Department of Pediatrics, University of Illinois College of Medicine Peoria · ♣University of Illinois Urbana-Champaign · ♠Siebel School of Computing and Data Science, University of Illinois Urbana-Champaign +1
TransitLM: A Large-Scale Dataset and Benchmark for Map-Free Transit Route Generation
May 21, 2026Hanyu Guo, Jiedong Yang, Chao Chen +3LLM Grounding Intelligent Transportation Systems
AMAP, Alibaba Group · Beijing, China
Perception or Prejudice: Can MLLMs Go Beyond First Impressions of Personality?
May 21, 2026Caixin Kang, Tianyu Yan, Sitong Gong +8LLM Grounding Personality Modeling in Language Models
1The University of Tokyo · 2Shanda AI Research Tokyo · 3Dalian University of Technology
When Cases Get Rare: A Retrieval Benchmark for Off-Guideline Clinical Question Answering
May 20, 2026Doeun Lee, Muge Zhang, Yi Yu +11LLM Grounding Healthcare
The Ohio State University · The Ohio State University Wexner Medical Center · University of Chicago Medical Center
Models Can Model, But Can't Bind: Structured Grounding in Text-to-Optimization
May 20, 2026Zhiqi Gao, Albert Ge, Alexander Berenbeim +2LLM Grounding LLM Fine-Tuning
University of Wisconsin-Madison · United States Military Academy
DeepWeb-Bench: A Deep Research Benchmark Demanding Massive Cross-Source Evidence and Long-Horizon Derivation
May 20, 2026Sixiong Xie, Zhuofan Shi, Haiyang Shen +8LLM Evaluation LLM Grounding
Peking University
GraphRAG on Consumer Hardware: Benchmarking Local LLMs for Healthcare EHR Schema Retrieval
May 20, 2026Peter Fernandes, Ria KanjilalLLM Inference Efficiency LLM Grounding
Department of Computer Engineering California Polytechnic State University San Luis Obispo, CA, USA
KoRe: Compact Knowledge Representations for Large Language Models
May 19, 2026Davide Cavicchini, Fausto Giunchiglia, Jacopo StaianoLLM Grounding Knowledge Augmentation for Language Models
University of Trento, Via Calepina, 14, 38122 Trento TN, Italy
SGR: A Stepwise Reasoning Framework for LLMs with External Subgraph Generation
May 15, 2026Xin Zhang, Yang Cao, Baoxing Wu +2LLM Grounding Knowledge Augmentation for Language Models
School of Information Science and Engineering, Chongqing Jiaotong University · School of Computer Science and Technology, Chongqing University of Posts and Telecommunications
Hypergraph Enterprise Agentic Reasoner over Heterogeneous Business Systems
May 14, 2026Ling Wang, Xin Liu, Songnan Liu +8LLM Grounding LLM Agent Orchestration
SUPCON, Hangzhou, China
Why Retrieval-Augmented Generation Fails: A Graph Perspective
May 13, 2026Kai Guo, Xinnan Dai, Zhibo Zhang +5Retrieval-Augmented Generation LLM Grounding
Michigan State University · Massachusetts Institute of Technology
Grounded Continuation: A Linear-Time Runtime Verifier for LLM Conversations
May 13, 2026Qisong He, Jinwei Hu, Xinmiao Huang +3Belief Revision LLM Grounding
School of Computer Science & Informatics, University of Liverpool
Bridging Legal Interpretation and Formal Logic: Faithfulness, Assumption, and the Future of AI Legal Reasoning
May 13, 2026Olivia Peiyu Wang, Leilani H. GilpinLLM Grounding Neuro-Symbolic Reasoning
University of California, Santa Cruz
Proof-Carrying Certificates for LLM Pipelines: A Trust-Boundary Architecture
May 13, 2026George KoomullilLLM Grounding LLM Auditing
Ascendr, Inc.
GeoBuildBench: A Benchmark for Interactive and Executable Geometry Construction from Natural Language
May 13, 2026Jinwoong Kim, Rui Yang, Huishuai ZhangMathematical Reasoning Benchmarks LLM Grounding
Peking University · Wangxuan Institute of Computer Technology
Safety-Oriented Evaluation of Language Understanding Systems for Air Traffic Control
May 12, 2026Yujing Chang, Yash Guleria, Duc-Thinh Pham +4LLM Grounding Air Traffic Management
1ATMRI, Nanyang Technological University (NTU), Singapore · School of Management, Indian Institute of Technology Mandi, India · Centre of AI Research, VinUniversity, Vietnam
Three Regimes of Context-Parametric Conflict: A Predictive Framework and Empirical Validation
May 12, 2026Pruthvinath Jeripity VenkataLLM Grounding Knowledge Conflicts in Language Models
Independent Researcher
The Semantic Training Gap: Ontology-Grounded Tool Architectures for Industrial AI Agent Systems
May 11, 2026Grama ChethanLLM Grounding LLM Hallucination Mitigation
Siemens Digital Industries Software, Plano, TX, United States
PathISE: Learning Informative Path Supervision for Knowledge Graph Question Answering
May 11, 2026Shengxiang Gao, Chao Lei, Jey Han Lau +1LLM Grounding Graph Retrieval-Augmented Generation
The University of Melbourne
DocScope: Benchmarking Verifiable Reasoning for Trustworthy Long-Document Understanding
May 9, 2026Xiang Feng, Jiawei Zhou, Zhangfeng Huang +6LLM Grounding LLM Answer Verification
School of Computer Science, National Engineering Research Center for Multimedia Software and Hubei Key Laboratory of Multimedia and Network Communication Engineering, Wuhan University, China · Alibaba Group, Hangzhou, China · Independent Researcher +1
The Grounding Gap: How LLMs Anchor the Meaning of Abstract Concepts Differently from Humans
May 9, 2026Odysseas S. Chlapanis, Orfeas Menis Mastromichalakis, Christos H. PapadimitriouLLM Grounding Cognitive Modeling
Department of Informatics Athens University of Economics and Business Archimedes, Athena Research Center Greece · Instituto de Telecomunicações Portugal · Department of Computer Science Columbia University United States
Causal Stories from Sensor Traces: Auditing Epistemic Overreach in LLM-Generated Personal Sensing Explanations
May 9, 2026Shanshan Zhu, Han Zhang, J. Doris Chi +2LLM Grounding LLM Auditing
University of Illinois Urbana-Champaign, USA · University of Chicago, USA · Yale University, New Haven, CT, USA +2
Intent-Driven Semantic ID Generation for Grounded Conversational News Recommendation
May 8, 2026Hongyang Su, Beibei Kong, Lei Cheng +3Semantic ID Recommendation LLM Grounding
Platform and Content Group, Tencent, Shenzhen, China · Shenzhen Campus of Sun Yat-sen University, Shenzhen, China
FinRAG-12B: A Production-Validated Recipe for Grounded Question Answering in Banking
May 6, 2026Denys Katerenchuk, Pablo Duboue, Keelan Evanini +6Financial Services LLM Grounding
Kasisto, New York, NY · Textualization, Vancouver, Canada · NBME, Philadelphia, PA
Text Corpora as Concept Fields: Black-Box Hallucination and Novelty Measurement
May 6, 2026Nicholas S. Kersting, Vittorio Castelli, Chieh Ting Yeh +2LLM Grounding LLM Hallucination Detection
Oracle Corporation
CANDI: Contextual Alignment for Niche Domains Question Answering
May 6, 2026Megha Chakraborty, Darssan L. Eswaramoorthi, Het Riteshkumar Shah +5LLM Evaluation LLM Grounding
University of South Carolina · IIIT-Delhi · Indian Institute of Technology Madras
RLearner-LLM: Balancing Logical Grounding and Fluency in Large Language Models via Hybrid Direct Preference Optimization
May 6, 2026Qiming Bao, Juho Leinonen, Paul Denny +1LLM Grounding LLM Alignment
University of Auckland · Aalto University
BIT.UA-AAUBS at ArchEHR-QA 2026: Evaluating Open-Source and Proprietary LLMs via Prompting in Low-Resource QA
May 5, 2026Richard A. A. Jonker, Alexander Christiansen, Alexandros Maniatis +4LLM Grounding Healthcare
Aalborg University Business School Fibigerstræde 2, Aalborg East 9220, Denmark · IEETA, DETI, LASI, University of Aveiro Campus Universitário de Santiago, Aveiro 3810-193, Portugal

May 25, 2026, cs.CLJ/K move · Enter open · S save

Why LLMs Hallucinate on Structured Knowledge: A Mechanistic Analysis of Reasoning over Linearized Representations

Shanghao Li, Jinda Han, Yibo Wang, Yuanjie Zhu+4

University of Illinois Chicago · University of Illinois Urbana-Champaign

LLM Grounding LLM Interpretability Hallucination in Language Models LLM Hallucination Detection

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In many reasoning tasks, large language models (LLMs) rely on structured external knowledge, such as graphs and tables, which is typically linearized into sequential token representations. However, even when sufficient knowledge is available, LLMs can still produce hallucinated outputs, and the underlying mechanisms behind such failures remain poorly understood. We investigate these mechanisms and find that hallucinations arise from systematic internal dynamics rather than random noise. First, attention disproportionately concentrates toward shortcut-like structural cues rather than distributing across the full context. Second, feed-forward representations fail to ground the provided knowledge, causing the model to revert to parametric memory. Moreover, our results indicate that hallucination is consistently associated with failures in semantic grounding within feed-forward layers, while attention allocation exhibits greater task-dependent variability. Finally, we show that these mechanistic patterns generalize beyond single-hop graphs to multi-hop and tabular settings, enabling effective hallucination detection across structured knowledge formats.

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Latest papers 216