Papers by Yaohua Tang
TurboRAG: Accelerating Retrieval-Augmented Generation with Precomputed KV Caches for Chunked Text (2025.emnlp-main)
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| Challenge: | Current RAG systems concatenate and process numerous retrieved document chunks for prefill . this leads to significant latency in time-to-first-token (TTFT) Experimental results demonstrate that TurboRAG reduces TTFT by up to 9.4x compared to the conventional RAG system. |
| Approach: | They propose a hybrid offline-online paradigm that precomputes chunk-level key-value caches and stitches them together at inference time using independent–attention and reorderedRoPE techniques. |
| Outcome: | Experimental results show that TurboRAG reduces TTFT by 9.4x compared to the conventional RAG systems . long concatenated contexts consume disproportionate GPU memory, limiting throughput . |