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Related papers: UMM: Unsupervised Mean-difference Maximization

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Semi-supervised learning algorithms reduce the high cost of acquiring labeled training data by using both labeled and unlabeled data during learning. Deep Convolutional Networks (DCNs) have achieved great success in supervised tasks and as…

Machine Learning · Statistics 2016-12-07 Tan Nguyen , Wanjia Liu , Ethan Perez , Richard G. Baraniuk , Ankit B. Patel

Numerous statistical methods have been developed to explore genomic imprinting and maternal effects, which are causes of parent-of-origin patterns in complex human diseases. However, most of them either only model one of these two…

Methodology · Statistics 2024-01-02 Pooya Aavani , Alexandre Trindade , Fangyuan Zhang

Multimodal Large Language Models (MLLMs) have revolutionized numerous research fields, including computer vision and affective computing. As a pivotal challenge in this interdisciplinary domain, facial expression recognition (FER) has…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Fan Zhang , Haoxuan Li , Shengju Qian , Xin Wang , Zheng Lian , Hao Wu , Zhihong Zhu , Yuan Gao , Qiankun Li , Yefeng Zheng , Zhouchen Lin , Pheng-Ann Heng

Effective feature selection is essential for high-dimensional data analysis and machine learning. Unsupervised feature selection (UFS) aims to simultaneously cluster data and identify the most discriminative features. Most existing UFS…

Machine Learning · Statistics 2026-03-23 Feng Yu , MD Saifur Rahman Mazumder , Ying Su , Oscar Contreras Velasco

Evaluating speech generation still relies heavily on human judgments, such as Mean Opinion Score (MOS), which are expensive, subjective, and difficult to reproduce at scale. While a few recent studies have begun to explore AudioLLM-based…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-25 Yuanyuan Wang , Dongchao Yang , Yayue Deng , Zhiyong Wu , Yiwen Guo , Helen Meng , Xixin Wu

Unsupervised Deep Distance Metric Learning (UDML) aims to learn sample similarities in the embedding space from an unlabeled dataset. Traditional UDML methods usually use the triplet loss or pairwise loss which requires the mining of…

Computer Vision and Pattern Recognition · Computer Science 2020-09-10 Binh X. Nguyen , Binh D. Nguyen , Gustavo Carneiro , Erman Tjiputra , Quang D. Tran , Thanh-Toan Do

Fraud in healthcare is widespread, as doctors could prescribe unnecessary treatments to increase bills. Insurance companies want to detect these anomalous fraudulent bills and reduce their losses. Traditional fraud detection methods use…

Machine Learning · Computer Science 2020-10-13 Victoria Snorovikhina , Alexey Zaytsev

Considering the abundance of unlabeled speech data and the high labeling costs, unsupervised learning methods can be essential for better system development. One of the most successful methods is contrastive self-supervised methods, which…

Audio and Speech Processing · Electrical Eng. & Systems 2022-08-11 Jaejin Cho , Raghavendra Pappagari , Piotr Żelasko , Laureano Moro-Velazquez , Jesús Villalba , Najim Dehak

Fraud detection is a challenging task due to the changing nature of fraud patterns over time and the limited availability of fraud examples to learn such sophisticated patterns. Thus, fraud detection with the aid of smart versions of…

Machine Learning · Computer Science 2022-09-07 Mary Isangediok , Kelum Gajamannage

Dense retrieval methods have demonstrated promising performance in multilingual information retrieval, where queries and documents can be in different languages. However, dense retrievers typically require a substantial amount of paired…

Computation and Language · Computer Science 2024-03-07 Chao-Wei Huang , Chen-An Li , Tsu-Yuan Hsu , Chen-Yu Hsu , Yun-Nung Chen

Computer manufacturers offer platforms for users to describe device faults using textual reports such as "My screen is flickering". Identifying the faulty component from the report is essential for automating tests and improving user…

Eye typing interfaces enable a person to enter text into an interface using only their own eyes. But despite the inherent advantages of touchless operation and intuitive design, such eye-typing interfaces often suffer from slow typing…

Human-Computer Interaction · Computer Science 2023-12-15 Zhe Zeng , Xiao Wang , Felix Wilhelm Siebert , Hailong Liu

The performance of speaker recognition system is highly dependent on the amount of speech used in enrollment and test. This work presents a detailed experimental review and analysis of the GMM-SVM based speaker recognition system in…

Large language models (LLMs) exhibit impressive fluency, but often produce critical errors known as "hallucinations". Uncertainty quantification (UQ) methods are a promising tool for coping with this fundamental shortcoming. Yet, existing…

Electroencephalography has been validated as an effective technique for detecting Parkinson's disease,particularly in its early stages.However,the high cost of EEG data annotation often results in limited dataset size and considerable…

Machine Learning · Computer Science 2025-08-22 Qian Zhang , Ruilin Zhang , Jun Xiao , Yifan Liu , Zhe Wang

Word-piece models (WPMs) are commonly used subword units in state-of-the-art end-to-end automatic speech recognition (ASR) systems. For multilingual ASR, due to the differences in written scripts across languages, multilingual WPMs bring…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-23 Chao Zhang , Bo Li , Tara N. Sainath , Trevor Strohman , Shuo-yiin Chang

The maximum mean discrepancy (MMD) is a kernel-based nonparametric statistic for two-sample testing, whose inferential accuracy depends critically on variance characterization. Existing work provides various finite-sample estimators of the…

Machine Learning · Statistics 2026-02-05 Shijie Zhong , Yikun Yang , Da Gong , Jiangfeng Fu

Verification presents a major bottleneck in Integrated Circuit (IC) development, consuming nearly 70% of the total development effort. While the Universal Verification Methodology (UVM) is widely used in industry to improve verification…

Hardware Architecture · Computer Science 2026-04-08 Junhao Ye , Yuchen Hu , Ke Xu , Dingrong Pan , Qichun Chen , Jie Zhou , Shuai Zhao , Xinwei Fang , Xi Wang , Nan Guan , Zhe Jiang

This paper studies uncertainty quantification for large language models (LLMs) under black-box access, where only a small number of responses can be sampled for each query. In this setting, estimating the effective semantic alphabet…

Computation and Language · Computer Science 2026-04-22 Hongxing Pan , Yingying Guo , Wenqing Kuang , Jiashi Lu

Unsupervised Anomaly Detection (UAD) plays a crucial role in identifying abnormal patterns within data without labeled examples, holding significant practical implications across various domains. Although the individual contributions of…

Machine Learning · Computer Science 2024-06-04 Zeyu Fang , Ming Gu , Sheng Zhou , Jiawei Chen , Qiaoyu Tan , Haishuai Wang , Jiajun Bu