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Jiawei Han

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Preprint Aug 2026

Select-And-Extract: A Lightweight Plugin for Retrieval-Augmented Generation

This work proposes Select-ANd-Extract (SANE), a simple yet effective plugin for RAG that performs blueprint-guided query-time evidence extraction, which allows the generator LM to use only compact and structured key information so that it can perform better reasoning.

Chenming Tang, Jia-Wei Han · 0 citations
Book Open access Aug 2026

Structure Shapes the Future of DataxLLM Systems: Retrieval, Structuring, and Reasoning

Large language models (LLMs) have transformed AI, yet they remain fundamentally limited by hallucination, unverifiable reasoning, and shallow evidence grounding. We argue that structure mining-rooted in decades of KDD research on taxonomy induction, ontology design, entity typing, and knowledge graph construction-is th...

Pengcheng Jiang, Jiashuo Sun, Wonbin Kweon et al. · 0 citations
Book Open access Aug 2026

Structure Shapes the Future of DataxLLM Systems: Retrieval, Structuring, and Reasoning

This tutorial presents a unified vision in which structuring serves as the enabling foundation for three pillars of next-generation LLM systems, highlighting how the cooperative interplay between classical KDD techniques and modern LLMs-where KDD defines structural schemas and quality constraints while LLMs execute fle...

Pengcheng Jiang, Jiashuo Sun, Wonbin Kweon et al. · 0 citations
Preprint Aug 2026

EnSI-RAG: Entity-Structure-Indexed Retrieval-Augmented Generation for Long-Document Question Answering

This work proposes EnSI-RAG (Entity-Structure-Indexed Retrieval-Augmented Generation), a framework that constructs a query-independent, entity-centered index that separates evidence localization from answer synthesis while preserving traceable source evidence.

Xuan-Yu Meng, Jiashuo Sun, Jash Parekh et al. · 1 citation

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