Tree Navigation Without LLM Summaries: A Matched-Cost Study of Hierarchical Retrieval for Long-Document QA
cs.CL, cs.IR
Submitted: 2026-09-30
Updated: 2026-09-30
Code: https://github.com/jerryjliu/llama_index
Sources
- Beyond Chunking: Discourse-Aware Hierarchical Retrieval for Long Document Question Answering
- From Local to Global: A Graph RAG Approach to Query-Focused Summarization
- Atlas: Few-shot Learning with Retrieval Augmented Language Models
- Lost in the Middle: How Language Models Use Long Contexts
- Passage Re-ranking with BERT
- AdaGReS:Adaptive Greedy Context Selection via Redundancy-Aware Scoring for Token-Budgeted RAG
- In-Context Retrieval-Augmented Language Models
- REPLUG: Retrieval-Augmented Black-Box Language Models
- CARROT: A Learned Cost-Constrained Retrieval Optimization System for RAG
- Corrective Retrieval Augmented Generation
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