SproutRAG: Attention-Guided Tree Search with Progressive Embeddings for Long-Document RAG

arXiv:2606.18381v1 Announce Type: new Abstract: Retrieval-augmented generation (RAG) systems must balance retrieval granularity with contextual coherence, a challenge that existing methods address through LLM-guided chunking, single-level context expansion, or hierarchical summarization. These approaches variously depend on costly LLM calls during indexing or retrieval, limit context aggregation to a single granularity level, or introduce information loss through summarization. We present SproutRAG, an attention-guided hierarchical RAG framework that addresses this trade-off by organizing sent

Source: arXiv cs.CL — read the full report at the original publisher.

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