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Dynamic Time Warping (DTW), and its constrained (CDTW) and weighted (WDTW) variants, are time series distances with a wide range of applications. They minimize the cost of non-linear alignments between series. CDTW and WDTW have been…

机器学习 · 计算机科学 2021-11-29 Matthieu Herrmann , Geoffrey I. Webb

This paper introduces $k$-Dynamic Time Warping ($k$-DTW), a novel dissimilarity measure for polygonal curves. $k$-DTW has stronger metric properties than Dynamic Time Warping (DTW) and is more robust to outliers than the Fr\'{e}chet…

数据结构与算法 · 计算机科学 2025-05-30 Amer Krivošija , Alexander Munteanu , André Nusser , Chris Schwiegelshohn

Label scarcity in a graph is frequently encountered in real-world applications due to the high cost of data labeling. To this end, semi-supervised domain adaptation (SSDA) on graphs aims to leverage the knowledge of a labeled source graph…

机器学习 · 计算机科学 2024-04-05 Jiaren Xiao , Quanyu Dai , Xiao Shen , Xiaochen Xie , Jing Dai , James Lam , Ka-Wai Kwok

Temporal alignment of sequences is a fundamental challenge in many applications, such as computer vision and bioinformatics, where local time shifting needs to be accounted for. Misalignment can lead to poor model generalization, especially…

机器学习 · 计算机科学 2025-01-10 Afek Steinberg , Ran Eisenberg , Ofir Lindenbaum

Graphs have become increasingly popular in modeling structures and interactions in a wide variety of problems during the last decade. Graph-based clustering and semi-supervised classification techniques have shown impressive performance.…

机器学习 · 计算机科学 2020-09-01 Zhao Kang , Chong Peng , Qiang Cheng , Xinwang Liu , Xi Peng , Zenglin Xu , Ling Tian

The label scarcity problem is the main challenge that hinders the wide application of deep learning systems in automatic cardiovascular diseases (CVDs) detection using electrocardiography (ECG). Tuning pre-trained models alleviates this…

机器学习 · 计算机科学 2024-11-18 Rushuang Zhou , Lei Clifton , Zijun Liu , Kannie W. Y. Chan , David A. Clifton , Yuan-Ting Zhang , Yining Dong

Labeled time-series data is often expensive and difficult to obtain, making it challenging to train accurate machine learning models for real-world applications such as anomaly detection or fault diagnosis. The scarcity of labeled samples…

机器学习 · 计算机科学 2026-01-21 Tuomas Jalonen , Mohammad Al-Sa'd , Serkan Kiranyaz , Moncef Gabbouj

Graph-based methods have been demonstrated as one of the most effective approaches for semi-supervised learning, as they can exploit the connectivity patterns between labeled and unlabeled data samples to improve learning performance.…

机器学习 · 计算机科学 2019-07-01 Qimai Li , Xiao-Ming Wu , Han Liu , Xiaotong Zhang , Zhichao Guan

Deep learning-based network traffic classification (NTC) techniques, including conventional and class-of-service (CoS) classifiers, are a popular tool that aids in the quality of service (QoS) and radio resource management for the Internet…

信号处理 · 电气工程与系统科学 2024-09-10 Yoga Suhas Kuruba Manjunath , Sihao Zhao , Xiao-Ping Zhang , Lian Zhao

Using deep learning models to classify time series data generated from the Internet of Things (IoT) devices requires a large amount of labeled data. However, due to constrained resources available in IoT devices, it is often difficult to…

信号处理 · 电气工程与系统科学 2022-02-02 Priyanka Gupta , Sathvik Bhaskarpandit , Manik Gupta

Time Series Classification (TSC) is a long-standing research problem that has gained increasing attention in recent years with the rapid growth of large-scale temporal data. Despite substantial progress enabled by deep learning, designing…

机器学习 · 计算机科学 2026-05-22 Xianhao Song , Yuang Zhang , Yuqi She , Liping Wang , Xuemin Lin

We address weakly supervised action alignment and segmentation in videos, where only the order of occurring actions is available during training. We propose Discriminative Differentiable Dynamic Time Warping (D3TW), the first discriminative…

计算机视觉与模式识别 · 计算机科学 2019-04-15 Chien-Yi Chang , De-An Huang , Yanan Sui , Li Fei-Fei , Juan Carlos Niebles

Although deep learning (DL) shows powerful potential in cell segmentation tasks, it suffers from poor generalization as DL-based methods originally simplified cell segmentation in detecting cell membrane boundary, lacking prominent cellular…

图像与视频处理 · 电气工程与系统科学 2023-03-22 Fang Hu , Xuexue Sun , Ke Qing , Fenxi Xiao , Zhi Wang , Xiaolu Fan

We present LSD-C, a novel method to identify clusters in an unlabeled dataset. Our algorithm first establishes pairwise connections in the feature space between the samples of the minibatch based on a similarity metric. Then it regroups in…

计算机视觉与模式识别 · 计算机科学 2020-06-18 Sylvestre-Alvise Rebuffi , Sebastien Ehrhardt , Kai Han , Andrea Vedaldi , Andrew Zisserman

Graph Neural Networks (GNNs) have attracted increasing attention in recent years and have achieved excellent performance in semi-supervised node classification tasks. The success of most GNNs relies on one fundamental assumption, i.e., the…

机器学习 · 计算机科学 2024-12-03 Junchao Lin , Yuan Wan , Jingwen Xu , Xingchen Qi

Graph-based semi-supervised node classification has been shown to become a state-of-the-art approach in many applications with high research value and significance. Most existing methods are only based on the original intrinsic or…

机器学习 · 计算机科学 2023-06-08 Jianpeng Liao , Jun Yan , Qian Tao

This paper looks into the technology classification problem for a distributed wireless spectrum sensing network. First, a new data-driven model for Automatic Modulation Classification (AMC) based on long short term memory (LSTM) is…

网络与互联网体系结构 · 计算机科学 2018-07-12 Sreeraj Rajendran , Wannes Meert , Domenico Giustiniano , Vincent Lenders , Sofie Pollin

The graph with complex annotations is the most potent data type, whose constantly evolving motivates further exploration of the unsupervised dynamic graph representation. One of the representative paradigms is graph contrastive learning. It…

机器学习 · 计算机科学 2024-12-20 Yiming Xu , Bin Shi , Teng Ma , Bo Dong , Haoyi Zhou , Qinghua Zheng

Link prediction is widely used in a variety of industrial applications, such as merchant recommendation, fraudulent transaction detection, and so on. However, it's a great challenge to train and deploy a link prediction model on…

社会与信息网络 · 计算机科学 2020-03-11 Dalong Zhang , Xianzheng Song , Ziqi Liu , Zhiqiang Zhang , Xin Huang , Lin Wang , Jun Zhou

Precise and timely traffic flow prediction plays a critical role in developing intelligent transportation systems and has attracted considerable attention in recent decades. Despite the significant progress in this area brought by deep…

机器学习 · 计算机科学 2022-05-03 Wenzheng Zhao