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Distance metric learning (DML) plays a crucial role in diverse machine learning algorithms and applications. When the labeled information in target domain is limited, transfer metric learning (TML) helps to learn the metric by leveraging…

Machine Learning · Statistics 2019-04-09 Yong Luo , Yonggang Wen , Dacheng Tao

The aim of Few-Shot learning methods is to train models which can easily adapt to previously unseen tasks, based on small amounts of data. One of the most popular and elegant Few-Shot learning approaches is Model-Agnostic Meta-Learning…

Machine Learning · Computer Science 2024-07-09 M. Przewięźlikowski , P. Przybysz , J. Tabor , M. Zięba , P. Spurek

Existing progress in object keypoint estimation primarily benefits from the conventional supervised learning paradigm based on numerous data labeled with pre-defined keypoints. However, these well-trained models can hardly detect the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Mingfu Liang , Jiahuan Zhou , Xu Zou , Ying Wu

Learning diverse and high-performance behaviors from a limited set of demonstrations is a grand challenge. Traditional imitation learning methods usually fail in this task because most of them are designed to learn one specific behavior…

Machine Learning · Computer Science 2025-04-07 Xingrui Yu , Zhenglin Wan , David Mark Bossens , Yueming Lyu , Qing Guo , Ivor W. Tsang

This paper presents a novel approach to e-commerce payment fraud detection by integrating reinforcement learning (RL) with Large Language Models (LLMs). By framing transaction risk as a multi-step Markov Decision Process (MDP), RL optimizes…

Machine Learning · Computer Science 2025-09-24 Bo Qu , Zhurong Wang , Daisuke Yagi , Zhen Xu , Yang Zhao , Yinan Shan , Frank Zahradnik

Metric learning plays a critical role in training image retrieval and classification. It is also a key algorithm in representation learning, e.g., for feature learning and its alignment in metric space. Hyperbolic embedding has been…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Shiyang Yan , Zongxuan Liu , Lin Xu

Few-shot learning (FSL) is a challenging task in machine learning, demanding a model to render discriminative classification by using only a few labeled samples. In the literature of FSL, deep models are trained in a manner of metric…

Computer Vision and Pattern Recognition · Computer Science 2025-01-27 Tong Wu , Takumi Kobayashi

Continual learning is an emerging paradigm in machine learning, wherein a model is exposed in an online fashion to data from multiple different distributions (i.e. environments), and is expected to adapt to the distribution change.…

Machine Learning · Computer Science 2022-03-29 Binghui Peng , Andrej Risteski

Molecular dynamics (MD) enables the study of physical systems with excellent spatiotemporal resolution but suffers from severe time-scale limitations. To address this, enhanced sampling methods have been developed to improve exploration of…

Statistical Mechanics · Physics 2023-06-19 Shams Mehdi , Zachary Smith , Lukas Herron , Ziyue Zou , Pratyush Tiwary

This paper investigates the supervised learning problem with observations drawn from certain general stationary stochastic processes. Here by \emph{general}, we mean that many stationary stochastic processes can be included. We show that…

Machine Learning · Statistics 2016-05-11 Hanyuan Hang , Yunlong Feng , Ingo Steinwart , Johan A. K. Suykens

Unlearning in large language models (LLMs) aims to remove specified data, but its efficacy is typically assessed with task-level metrics like accuracy and perplexity. We show that these metrics can be misleading, as models can appear to…

Computation and Language · Computer Science 2026-05-19 Xiaoyu Xu , Xiang Yue , Yang Liu , Qingqing Ye , Huadi Zheng , Peizhao Hu , Minxin Du , Haibo Hu

Machine learning (ML) techniques are increasingly common in security applications, such as malware and intrusion detection. However, ML models are often susceptible to evasion attacks, in which an adversary makes changes to the input (such…

Cryptography and Security · Computer Science 2019-05-14 Liang Tong , Bo Li , Chen Hajaj , Chaowei Xiao , Ning Zhang , Yevgeniy Vorobeychik

We consider the use of extreme learning machines (ELM) for computational partial differential equations (PDE). In ELM the hidden-layer coefficients in the neural network are assigned to random values generated on $[-R_m,R_m]$ and fixed,…

Computational Physics · Physics 2022-06-01 Suchuan Dong , Jielin Yang

Several Deep Learning (DL) methods have recently been proposed for an automated identification of kidney stones during an ureteroscopy to enable rapid therapeutic decisions. Even if these DL approaches led to promising results, they are…

Learning with streaming data has attracted much attention during the past few years. Though most studies consider data stream with fixed features, in real practice the features may be evolvable. For example, features of data gathered by…

Machine Learning · Computer Science 2018-01-09 Bo-Jian Hou , Lijun Zhang , Zhi-Hua Zhou

Classification is a common task in machine learning. Random features (RFs) stand as a central technique for scalable learning algorithms based on kernel methods, and more recently proposed optimized random features, sampled depending on the…

Quantum Physics · Physics 2022-06-15 Hayata Yamasaki , Sho Sonoda

Incremental learning (IL) has received a lot of attention recently, however, the literature lacks a precise problem definition, proper evaluation settings, and metrics tailored specifically for the IL problem. One of the main objectives of…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Arslan Chaudhry , Puneet K. Dokania , Thalaiyasingam Ajanthan , Philip H. S. Torr

Metric-based meta-learning has attracted a lot of attention due to its effectiveness and efficiency in few-shot learning. Recent studies show that metric scaling plays a crucial role in the performance of metric-based meta-learning…

Machine Learning · Computer Science 2020-08-27 Jiaxin Chen , Li-Ming Zhan , Xiao-Ming Wu , Fu-lai Chung

Most fine-grained fashion image retrieval (FIR) methods assume a static setting, requiring full retraining when new attributes appear, which is costly and impractical for dynamic scenarios. Although pretrained models support zero-shot…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Ling Xiao , Toshihiko Yamasaki

Large language-vision models (LVLMs) such as CLIP, Flamingo, and BLIP have revolutionized AI by enabling understanding across textual and visual modalities. These models excel at tasks like image captioning, visual question answering, and…

Robotics · Computer Science 2026-05-14 Hamza Ahmed Durrani , Rafay Suleman Durrani