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Retrieval Augmented Generation (RAG) has emerged as a new paradigm for enhancing Large Language Model reliability through integration with external knowledge sources. However, efficient deployment of these systems presents significant…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-14 Bodun Hu , Luis Pabon , Saurabh Agarwal , Aditya Akella

Real-time voice agents face a dilemma: end-to-end models often lack deep reasoning, while cascaded pipelines incur high latency by executing ASR, LLM reasoning, and TTS strictly in sequence, unlike human conversation where listeners often…

Sound · Computer Science 2026-01-29 Wenhao Zou , Yuwei Miao , Zhanyu Ma , Jun Xu , Jiuchong Gao , Jinghua Hao , Renqing He , Jingwen Xu

Retrieval-augmented generation (RAG) systems combine the strengths of language generation and information retrieval to power many real-world applications like chatbots. Use of RAG for understanding of videos is appealing but there are two…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Md Adnan Arefeen , Biplob Debnath , Md Yusuf Sarwar Uddin , Srimat Chakradhar

Recent advances in Large Language Models (LLMs) have significantly improved complex reasoning capabilities. Retrieval-Augmented Generation (RAG) has further extended these capabilities by grounding generation in dynamically retrieved…

Computation and Language · Computer Science 2026-02-23 Jash Rajesh Parekh , Pengcheng Jiang , Jiawei Han

Diffusion-based generative models have greatly impacted the speech processing field in recent years, exhibiting high speech naturalness and spawning a new research direction. Their application in real-time communication is, however, still…

Signal Processing · Electrical Eng. & Systems 2026-04-22 Simon Welker , Bunlong Lay , Maris Hillemann , Tal Peer , Timo Gerkmann

We present DynaRAG, a retrieval-augmented generation (RAG) framework designed to handle both static and time-sensitive information needs through dynamic knowledge integration. Unlike traditional RAG pipelines that rely solely on static…

Computation and Language · Computer Science 2026-03-20 Penghao Liang , Mengwei Yuan , Jianan Liu , Jing Yang , Xianyou Li , Weiran Yan , Yichao Wu

Recent advances in zero-shot text-to-speech (TTS) synthesis have achieved high-quality speech generation for unseen speakers, but most systems remain unsuitable for real-time applications because of their offline design. Current streaming…

Sound · Computer Science 2025-06-17 Hui Wang , Yifan Yang , Shujie Liu , Jinyu Li , Lingwei Meng , Yanqing Liu , Jiaming Zhou , Haoqin Sun , Yan Lu , Yong Qin

Evaluating Retrieval-Augmented Generation (RAG) systems using static multi-turn datasets fails to capture the dynamic nature of real-world dialogues. Existing evaluation methods rely on predefined datasets, which restrict them to static,…

Information Retrieval · Computer Science 2026-04-21 Lorenz Brehme , Benedikt Dornauer , Jan-Henrik Böttcher , Klaus Schmid , Mircea-Cristian Racasan , Ruth Breu

Large Language Models (LLMs) have advanced artificial intelligence by enabling human-like text generation and natural language understanding. However, their reliance on static training data limits their ability to respond to dynamic,…

Artificial Intelligence · Computer Science 2026-04-02 Aditi Singh , Abul Ehtesham , Saket Kumar , Tala Talaei Khoei , Athanasios V. Vasilakos

This paper presents our modeling and architecture approaches for building a highly accurate low-latency language identification system to support multilingual spoken queries for voice assistants. A common approach to solve multilingual…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-02 Chander Chandak , Zeynab Raeesy , Ariya Rastrow , Yuzong Liu , Xiangyang Huang , Siyu Wang , Dong Kwon Joo , Roland Maas

Retrieval-Augmented Generation (RAG) utilizes external knowledge to augment Large Language Models' (LLMs) reliability. For flexibility, agentic RAG employs autonomous, multi-round retrieval and reasoning to resolve queries. Although recent…

Information Retrieval · Computer Science 2025-11-10 Chao Zhang , Yuhao Wang , Derong Xu , Haoxin Zhang , Yuanjie Lyu , Yuhao Chen , Shuochen Liu , Tong Xu , Xiangyu Zhao , Yan Gao , Yao Hu , Enhong Chen

Achieving human-like responsiveness is a critical yet challenging goal for cascaded spoken dialogue systems. Conventional ASR-LLM-TTS pipelines follow a strictly sequential paradigm, requiring complete transcription and full reasoning…

Computation and Language · Computer Science 2026-02-27 Siyuan Liu , Jiahui Xu , Feng Jiang , Kuang Wang , Zefeng Zhao , Chu-Ren Huang , Jinghang Gu , Changqing Yin , Haizhou Li

Large Language Models (LLMs) have recently garnered significant attention, primarily for their capabilities in text-based interactions. However, natural human interaction often relies on speech, necessitating a shift towards voice-based…

Computation and Language · Computer Science 2025-08-08 Wenqian Cui , Dianzhi Yu , Xiaoqi Jiao , Ziqiao Meng , Guangyan Zhang , Qichao Wang , Yiwen Guo , Irwin King

Retrieval-augmented generation (RAG) can enhance the generation quality of large language models (LLMs) by incorporating external token databases. However, retrievals from large databases can constitute a substantial portion of the overall…

Computation and Language · Computer Science 2024-03-12 Wenqi Jiang , Shuai Zhang , Boran Han , Jie Wang , Bernie Wang , Tim Kraska

Large language models (LLMs) are very costly and inefficient to update with new information. To address this limitation, retrieval-augmented generation (RAG) has been proposed as a solution that dynamically incorporates external knowledge…

Computation and Language · Computer Science 2025-07-10 Sezen Perçin , Xin Su , Qutub Sha Syed , Phillip Howard , Aleksei Kuvshinov , Leo Schwinn , Kay-Ulrich Scholl

Cascaded speech-to-speech translation systems often suffer from the error accumulation problem and high latency, which is a result of cascaded modules whose inference delays accumulate. In this paper, we propose a transducer-based speech…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-07 Jinzheng Zhao , Niko Moritz , Egor Lakomkin , Ruiming Xie , Zhiping Xiu , Katerina Zmolikova , Zeeshan Ahmed , Yashesh Gaur , Duc Le , Christian Fuegen

Although the Retrieval-Augmented Generation (RAG) paradigms can use external knowledge to enhance and ground the outputs of Large Language Models (LLMs) to mitigate generative hallucinations and static knowledge base problems, they still…

Computation and Language · Computer Science 2024-05-24 Diji Yang , Jinmeng Rao , Kezhen Chen , Xiaoyuan Guo , Yawen Zhang , Jie Yang , Yi Zhang

Retrieval-augmented generation (RAG) extends large language models (LLMs) with external data sources to enhance factual correctness and domain coverage. Modern RAG pipelines rely on large datastores, creating a significant system challenge:…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-19 Chien-Yu Lin , Keisuke Kamahori , Yiyu Liu , Xiaoxiang Shi , Madhav Kashyap , Yile Gu , Rulin Shao , Zihao Ye , Kan Zhu , Rohan Kadekodi , Stephanie Wang , Arvind Krishnamurthy , Luis Ceze , Baris Kasikci

Retrieval-Augmented Generation (RAG) has been shown to enhance the factual accuracy of Large Language Models (LLMs), but existing methods often suffer from limited reasoning capabilities in effectively using the retrieved evidence,…

Computation and Language · Computer Science 2024-10-03 Shayekh Bin Islam , Md Asib Rahman , K S M Tozammel Hossain , Enamul Hoque , Shafiq Joty , Md Rizwan Parvez

Large Language Models (LLMs) excel in data synthesis but can be inaccurate in domain-specific tasks, which retrieval-augmented generation (RAG) systems address by leveraging user-provided data. However, RAGs require optimization in both…

Computation and Language · Computer Science 2024-11-05 Kazi Ahmed Asif Fuad , Lizhong Chen