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We propose a novel way to train ranking models, such as recommender systems, that are both effective and efficient. Knowledge distillation (KD) was shown to be successful in image recognition to achieve both effectiveness and efficiency. We…

机器学习 · 计算机科学 2018-09-21 Jiaxi Tang , Ke Wang

This paper focuses on the dynamic optimization of the Retrieval-Augmented Generation (RAG) architecture. It proposes a state-aware dynamic knowledge retrieval mechanism to enhance semantic understanding and knowledge scheduling efficiency…

计算与语言 · 计算机科学 2025-04-29 Jacky He , Guiran Liu , Binrong Zhu , Hanlu Zhang , Hongye Zheng , Xiaokai Wang

As large language models (LLMs) become increasingly prevalent across many real-world applications, understanding and enhancing their robustness to adversarial attacks is of paramount importance. Existing methods for identifying adversarial…

In this paper, we propose DS-KWS, a two-stage framework for robust user-defined keyword spotting. It combines a CTC-based method with a streaming phoneme search module to locate candidate segments, followed by a QbyT-based method with a…

声音 · 计算机科学 2025-10-14 Zhiqi Ai , Han Cheng , Yuxin Wang , Shiyi Mu , Shugong Xu , Yongjin Zhou

Unsupervised keyphrase prediction has gained growing interest in recent years. However, existing methods typically rely on heuristically defined importance scores, which may lead to inaccurate informativeness estimation. In addition, they…

计算与语言 · 计算机科学 2025-06-02 Lam Thanh Do , Aaditya Bodke , Pritom Saha Akash , Kevin Chen-Chuan Chang

Retrieval-augmented language models (RALMs) have recently shown great potential in mitigating the limitations of implicit knowledge in LLMs, such as untimely updating of the latest expertise and unreliable retention of long-tail knowledge.…

计算与语言 · 计算机科学 2024-10-07 Zile Qiao , Wei Ye , Yong Jiang , Tong Mo , Pengjun Xie , Weiping Li , Fei Huang , Shikun Zhang

Rehearsal-based video incremental learning often employs knowledge distillation to mitigate catastrophic forgetting of previously learned data. However, this method faces two major challenges for video task: substantial computing resources…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Shengqin Jiang , Yaoyu Fang , Haokui Zhang , Qingshan Liu , Yuankai Qi , Yang Yang , Peng Wang

Recognizing a particular command or a keyword, keyword spotting has been widely used in many voice interfaces such as Amazon's Alexa and Google Home. In order to recognize a set of keywords, most of the recent deep learning based approaches…

音频与语音处理 · 电气工程与系统科学 2022-06-14 Archit Parnami , Minwoo Lee

This article presents a method for improving a keyword spotter (KWS) algorithm in noisy environments. Although beamforming (BF) and adaptive noise cancellation (ANC) techniques are robust in some conditions, they may degrade the performance…

Deep neural networks provide effective solutions to small-footprint keyword spotting (KWS). However, if training data is limited, it remains challenging to achieve robust and highly accurate KWS in real-world scenarios where unseen sounds…

音频与语音处理 · 电气工程与系统科学 2021-07-14 Menglong Xu , Shengqiang Li , Chengdong Liang , Xiao-Lei Zhang

It is always demanding to learn robust visual representation for various learning problems; however, this learning and maintenance process usually suffers from noise, incompleteness or knowledge domain mismatch. Thus, robust representation…

机器学习 · 计算机科学 2020-04-28 Zhengming Ding , Ming Shao , Handong Zhao , Sheng Li

User behavior on online platforms is evolving, reflecting real-world changes in how people post, whether it's helpful messages or hate speech. Models that learn to capture this content can experience a decrease in performance over time due…

机器学习 · 计算机科学 2025-11-04 Yasas Senarath , Hemant Purohit

The deployment of large language models (LLMs) like ChatGPT and Gemini has shown their powerful natural language generation capabilities. However, these models can inadvertently learn and retain sensitive information and harmful content…

密码学与安全 · 计算机科学 2025-10-14 Shang Wang , Tianqing Zhu , Dayong Ye , Wanlei Zhou

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm for Large Language Models (LLMs) to address knowledge-intensive queries requiring domain-specific or up-to-date information. To handle complex multi-hop questions that…

计算与语言 · 计算机科学 2026-01-05 Yuxin Wang , Shicheng Fang , Bo Wang , Qi Luo , Xuanjing Huang , Yining Zheng , Xipeng Qiu

Data augmentation is a widely used technique in machine learning to improve model performance. However, existing data augmentation techniques in natural language understanding (NLU) may not fully capture the complexity of natural language…

计算与语言 · 计算机科学 2023-07-06 Zhengqing Yuan , Xiaolong Zhang , Yue Wang , Xuecong Hou , Huiwen Xue , Zhuanzhe Zhao , Yongming Liu

Efficient knowledge management plays a pivotal role in augmenting both the operational efficiency and the innovative capacity of businesses and organizations. By indexing knowledge through vectorization, a variety of knowledge retrieval…

计算与语言 · 计算机科学 2024-04-23 Feihu Jiang , Chuan Qin , Kaichun Yao , Chuyu Fang , Fuzhen Zhuang , Hengshu Zhu , Hui Xiong

For future learning systems, incremental learning is desirable because it allows for: efficient resource usage by eliminating the need to retrain from scratch at the arrival of new data; reduced memory usage by preventing or limiting the…

机器学习 · 计算机科学 2022-10-12 Marc Masana , Xialei Liu , Bartlomiej Twardowski , Mikel Menta , Andrew D. Bagdanov , Joost van de Weijer

Task incremental learning aims to enable a system to maintain its performance on previously learned tasks while learning new tasks, solving the problem of catastrophic forgetting. One promising approach is to build an individual network or…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Jian Jiang , Oya Celiktutan

Many AI customer service systems use standard NLP pipelines or finetuned language models, which often fall short on ambiguous, multi-intent, or detail-specific queries. This case study evaluates recent techniques: query rewriting, RAG…

信息检索 · 计算机科学 2025-08-11 Hei Yu Chan , Kuok Tou Ho , Chenglong Ma , Yujing Si , Hok Lai Lin , Sa Lei Lam

Efforts to leverage deep learning models in low-resource regimes have led to numerous augmentation studies. However, the direct application of methods such as mixup and cutout to text data, is limited due to their discrete characteristics.…

计算与语言 · 计算机科学 2024-03-26 Kyohoon Jin , Junho Lee , Juhwan Choi , Sangmin Song , Youngbin Kim