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Retrieval-Augmented Generation (RAG), by integrating non-parametric knowledge from external knowledge bases into models, has emerged as a promising approach to enhancing response accuracy while mitigating factual errors and hallucinations.…

Information Retrieval · Computer Science 2025-09-12 Qitao Qin , Yucong Luo , Yihang Lu , Zhibo Chu , Xiaoman Liu , Xianwei Meng

In this paper, we propose the coarse-to-fine optimization for the task of speech enhancement. Cosine similarity loss [1] has proven to be an effective metric to measure similarity of speech signals. However, due to the large variance of the…

Sound · Computer Science 2019-08-23 Jian Yao , Ahmad Al-Dahle

Acoustic environments affect acoustic characteristics of sound to be recognized by physically interacting with sound wave propagation. Thus, training acoustic models for audio and speech tasks requires regularization on various acoustic…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-08 Hyeonuk Nam , Seong-Hu Kim , Yong-Hwa Park

We present a comprehensive framework for enhancing Retrieval-Augmented Generation (RAG) systems through dynamic retrieval strategies and reinforcement fine-tuning. This approach significantly improves large language models on…

Machine Learning · Computer Science 2025-05-21 Sakhinana Sagar Srinivas , Akash Das , Shivam Gupta , Venkataramana Runkana

In deepfake detection, it is essential to maintain high performance by adjusting the parameters of the detector as new deepfake methods emerge. In this paper, we propose a method to automatically and actively select the small amount of…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Yoshihiko Furuhashi , Junichi Yamagishi , Xin Wang , Huy H. Nguyen , Isao Echizen

Retrieval-Augmented Generation (RAG) has revolutionized natural language processing by dynamically integrating external knowledge into Large Language Models (LLMs), addressing their limitation of static training datasets. Recent…

Computation and Language · Computer Science 2024-09-05 Krish Goel , Mahek Chandak

Continual learning aims to learn multiple tasks sequentially while preserving prior knowledge, but faces the challenge of catastrophic forgetting when adapting to new tasks. Recently, approaches leveraging pre-trained models have gained…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Quan Cheng , Yuanyu Wan , Lingyu Wu , Chenping Hou , Lijun Zhang

The creation of altered and manipulated faces has become more common due to the improvement of DeepFake generation methods. Simultaneously, we have seen detection models' development for differentiating between a manipulated and original…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Sowmen Das , Selim Seferbekov , Arup Datta , Md. Saiful Islam , Md. Ruhul Amin

The rise of highly convincing synthetic speech poses a growing threat to audio communications. Although existing Audio Deepfake Detection (ADD) methods have demonstrated good performance under clean conditions, their effectiveness drops…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-05 Haohan Shi , Xiyu Shi , Safak Dogan , Tianjin Huang , Yunxiao Zhang

Most of previous deepfake detection researches bent their efforts to describe and discriminate artifacts in human perceptible ways, which leave a bias in the learned networks of ignoring some critical invariance features intra-class and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-17 Ruiqi Zha , Zhichao Lian , Qianmu Li , Siqi Gu

Regional prompting, or compositional generation, which enables fine-grained spatial control, has gained increasing attention for its practicality in real-world applications. However, previous methods either introduce additional trainable…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Zhennan Chen , Yajie Li , Haofan Wang , Zhibo Chen , Zhengkai Jiang , Jun Li , Qian Wang , Jian Yang , Ying Tai

Recent works have demonstrated the effectiveness of reinforcement learning (RL)-based post-training for enhancing the reasoning capabilities of large language models (LLMs). In particular, Group Relative Policy Optimization (GRPO) has shown…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Jinyoung Park , Jeehye Na , Jinyoung Kim , Hyunwoo J. Kim

Preference alignment is pivotal for empowering large language models (LLMs) to generate helpful and harmless responses. However, the performance of preference alignment is highly sensitive to the prevalent noise in the preference data.…

Machine Learning · Computer Science 2024-05-29 Xize Liang , Chao Chen , Shuang Qiu , Jie Wang , Yue Wu , Zhihang Fu , Zhihao Shi , Feng Wu , Jieping Ye

Data augmentation is conventionally used to inject robustness in Speaker Verification systems. Several recently organized challenges focus on handling novel acoustic environments. Deep learning based speech enhancement is a modern solution…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-29 Saurabh Kataria , Phani Sankar Nidadavolu , Jesús Villalba , Najim Dehak

This study addresses the challenge of noise in training datasets for Direct Preference Optimization (DPO), a method for aligning Large Language Models (LLMs) with human preferences. We categorize noise into pointwise noise, which includes…

Machine Learning · Computer Science 2025-04-21 Junkang Wu , Yuexiang Xie , Zhengyi Yang , Jiancan Wu , Jiawei Chen , Jinyang Gao , Bolin Ding , Xiang Wang , Xiangnan He

Acoustic echo cancellation (AEC) plays an important role in the full-duplex speech communication as well as the front-end speech enhancement for recognition in the conditions when the loudspeaker plays back. In this paper, we present an…

Audio and Speech Processing · Electrical Eng. & Systems 2022-05-24 Meng Yu , Yong Xu , Chunlei Zhang , Shi-Xiong Zhang , Dong Yu

Language Model (LM)-based speech enhancement (SE) has recently emerged as a promising direction, but existing approaches predominantly rely on token-level likelihood objectives that weakly reflect human perception. This mismatch limits…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-21 Haoyang Li , Nana Hou , Yuchen Hu , Jixun Yao , Sabato Marco Siniscalchi , Xuyi Zhuang , Deheng Ye , Wei Yang , Eng Siong Chng

In this work we apply deep reinforcement learning to the problems of navigating a three-dimensional environment and inferring the locations of human speaker audio sources within, in the case where the only available information is the raw…

Sound · Computer Science 2021-11-30 Petros Giannakopoulos , Aggelos Pikrakis , Yannis Cotronis

Retrieval-Augmented Generation (RAG) is a key approach to mitigating the temporal staleness of large language models (LLMs) by grounding responses in up-to-date evidence. Within the RAG pipeline, re-rankers play a pivotal role in selecting…

Information Retrieval · Computer Science 2026-04-17 Sohyun An , Hayeon Lee , Shuibenyang Yuan , Chun-cheng Jason Chen , Cho-Jui Hsieh , Vijai Mohan , Alexander Min

With the development of audio deepfake techniques, attacks with partially deepfake audio are beginning to rise. Compared to fully deepfake, it is much harder to be identified by the detector due to the partially cryptic manipulation,…

Sound · Computer Science 2025-07-08 Jiayi He , Jiangyan Yi , Jianhua Tao , Siding Zeng , Hao Gu
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