Less can be More: Relieving RAG Bottlenecks via Evidence Frontloading and Pressure-Adaptive Budgeting

arXiv:2608.25115 · cs.CL, cs.IR · Submitted 2026-08-25 · Read on arXiv

cs.CL, cs.IR

Submitted: 2026-08-25

Updated: 2026-08-25

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• RAG — 34× in this paper · explained in 3 episodes
• Retrieval-Augmented Generation — 7× in this paper
• Queries Per Second — 5× in this paper
• Ablation — 4× in this paper · explained in 1 episode
• Calibration — 4× in this paper · explained in 7 episodes
• Information Gain — 4× in this paper · explained in 2 episodes
• Prioritized Adaptive Coverage of Evidence — 4× in this paper
• Training-Free Framework — 3× in this paper · explained in 2 episodes
• Maximal Marginal Relevance — 2× in this paper
• Transformer — 2× in this paper · explained in 2 episodes
• Ablation Studies — 1× in this paper · explained in 1 episode
• Ablation study — 1× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Adaptation — 1× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• Benchmarking — 1× in this paper · explained in 3 episodes
• Contrastive Learning — 1× in this paper · explained in 5 episodes
• Core — 1× in this paper · explained in 2 episodes
• Downstream Tasks — 1× in this paper · explained in 2 episodes
• Generative Model — 1× in this paper · explained in 2 episodes
• Generative Models — 1× in this paper · explained in 2 episodes
• Hallucination — 1× in this paper · explained in 3 episodes
• Large Language Models (LLMs) — 1× in this paper · explained in 6 episodes
• Pruning — 1× in this paper · explained in 4 episodes
• Redundancy — 1× in this paper · explained in 2 episodes
• Retrieval-Augmented Generation (RAG) — 1× in this paper · explained in 16 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Rocchio Pseudo-Relevance Feedback — 1× in this paper

Sources

• HyperRAG: Enhancing Quality-Efficiency Tradeoffs in Retrieval-Augmented Generation with Reranker KV-Cache Reuse
• Efficient Listwise Reranking with Compressed Document Representations
• A Thorough Comparison of Cross-Encoders and LLMs for Reranking SPLADE
• SPLADE-v3: New baselines for SPLADE
• Passage Re-ranking with BERT
• Better RAG using Relevant Information Gain
• Qwen2.5 Technical Report
• Approximate Nearest Neighbor Negative Contrastive Learning for Dense Text Retrieval
• Answering Complex Open-Domain Questions with Multi-Hop Dense Retrieval
• RECOMP: Improving Retrieval-Augmented LMs with Compression and Selective Augmentation

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