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Multimodal time series (MTS) anomaly detection is crucial for maintaining the safety and stability of working devices (e.g., water treatment system and spacecraft), whose data are characterized by multivariate time series with diverse…

机器学习 · 计算机科学 2023-10-18 Chaoyue Ding , Shiliang Sun , Jing Zhao

Similarity measures for time series are important problems for time series classification. To handle the nonlinear time distortions, Dynamic Time Warping (DTW) has been widely used. However, DTW is not learnable and suffers from a trade-off…

计算机视觉与模式识别 · 计算机科学 2023-09-14 Shinnosuke Matsuo , Xiaomeng Wu , Gantugs Atarsaikhan , Akisato Kimura , Kunio Kashino , Brian Kenji Iwana , Seiichi Uchida

Graph clustering has been popularly studied in recent years. However, most existing graph clustering methods focus on node-level clustering, i.e., grouping nodes in a single graph into clusters. In contrast, graph-level clustering, i.e.,…

机器学习 · 计算机科学 2023-11-27 Mengling Hu , Chaochao Chen , Weiming Liu , Xinyi Zhang , Xinting Liao , Xiaolin Zheng

Creating separable representations via representation learning and clustering is critical in analyzing large unstructured datasets with only a few labels. Separable representations can lead to supervised models with better classification…

Leveraging deep learning for causal discovery in time series remains challenging because existing neural methods predominantly rely on component-wise architectures that fail to capture shared system dynamics or employ decoupled post-hoc…

机器学习 · 计算机科学 2026-05-11 Omar Muhammad , Pasupuleti Dhruv Shivkant , Deepak N. Subramani

Face clustering has attracted rising research interest recently to take advantage of massive amounts of face images on the web. State-of-the-art performance has been achieved by Graph Convolutional Networks (GCN) due to their powerful…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Yaohua Wang , Yaobin Zhang , Fangyi Zhang , Ming Lin , YuQi Zhang , Senzhang Wang , Xiuyu Sun

Graph clustering is an unsupervised machine learning method that partitions the nodes in a graph into different groups. Despite achieving significant progress in exploiting both attributed and structured data information, graph clustering…

机器学习 · 计算机科学 2025-01-03 Rui Zhang , Xiaoyang Hou , Zhihua Tian , Yan he , Enchao Gong , Jian Liu , Qingbiao Wu , Kui Ren

Clustering aims to group similar objects together while separating dissimilar ones apart. Thereafter, structures hidden in data can be identified to help understand data in an unsupervised manner. Traditional clustering methods such as…

计算机视觉与模式识别 · 计算机科学 2023-06-23 Jiawei Yao , Enbei Liu , Maham Rashid , Juhua Hu

We propose a deep amortized clustering (DAC), a neural architecture which learns to cluster datasets efficiently using a few forward passes. DAC implicitly learns what makes a cluster, how to group data points into clusters, and how to…

机器学习 · 计算机科学 2019-10-01 Juho Lee , Yoonho Lee , Yee Whye Teh

Clustering procedures suitable for the analysis of very high-dimensional data are needed for many modern data sets. In model-based clustering, a method called high-dimensional data clustering (HDDC) uses a family of Gaussian mixture models…

统计方法学 · 统计学 2017-06-28 Angelina Pesevski , Brian C. Franczak , Paul D. McNicholas

Transformer-based models have emerged as powerful tools for multivariate time series forecasting (MTSF). However, existing Transformer models often fall short of capturing both intricate dependencies across variate and temporal dimensions…

机器学习 · 计算机科学 2024-06-10 Juncheng Liu , Chenghao Liu , Gerald Woo , Yiwei Wang , Bryan Hooi , Caiming Xiong , Doyen Sahoo

Spatial-temporal data, fundamental to many intelligent applications, reveals dependencies indicating causal links between present measurements at specific locations and historical data at the same or other locations. Within this context,…

机器学习 · 计算机科学 2025-01-16 Wenying Duan , Shujun Guo , Wei huang , Hong Rao , Xiaoxi He

In healthcare, patient data is often collected as multivariate time series, providing a comprehensive view of a patient's health status over time. While this data can be sparse, connected devices may enhance its frequency. The goal is to…

机器学习 · 计算机科学 2024-01-11 Violaine Courrier , Christophe Biernacki , Cristian Preda , Benjamin Vittrant

Land-use monitoring is fundamental for spatial planning, particularly in view of compound impacts of growing global populations and climate change. Despite existing applications of deep learning in land use monitoring, standard…

计算机视觉与模式识别 · 计算机科学 2026-02-16 Usman Nazir , Wadood Islam , Sara Khalid , Murtaza Taj

Scientific applications in fields such as high energy physics, computational fluid dynamics, and climate science generate vast amounts of data at high velocities. This exponential growth in data production is surpassing the advancements in…

机器学习 · 计算机科学 2024-09-10 Xiao Li , Jaemoon Lee , Anand Rangarajan , Sanjay Ranka

Multivariate time series forecasting tasks are usually conducted in a channel-dependent (CD) way since it can incorporate more variable-relevant information. However, it may also involve a lot of irrelevant variables, and this even leads to…

机器学习 · 计算机科学 2024-05-15 Qinshuo Liu , Yanwen Fang , Pengtao Jiang , Guodong Li

Deep subspace clustering based on auto-encoder has received wide attention. However, most subspace clustering based on auto-encoder does not utilize the structural information in the self-expressive coefficient matrix, which limits the…

计算机视觉与模式识别 · 计算机科学 2023-06-21 Ling Zhao , Yunpeng Ma , Shanxiong Chen , Jun Zhou

Recently, transfer subspace learning based approaches have shown to be a valid alternative to unsupervised subspace clustering and temporal data clustering for human motion segmentation (HMS). These approaches leverage prior knowledge from…

计算机视觉与模式识别 · 计算机科学 2021-08-30 Mariella Dimiccoli , Lluís Garrido , Guillem Rodriguez-Corominas , Herwig Wendt

In this paper we make progress on the unsupervised task of mining arbitrarily shaped clusters in highly noisy datasets, which is a task present in many real-world applications. Based on the fundamental work that first applies a wavelet…

数据库 · 计算机科学 2019-01-08 Zengjian Chen , Jiayi Liu , Yihe Deng , Kun He , John E. Hopcroft

Spectral clustering is a leading clustering method. Two of its major shortcomings are the disjoint optimization process and the limited representation capacity. To address these issues, we propose a deep spectral clustering model (named…

计算机视觉与模式识别 · 计算机科学 2025-08-07 Wengang Guo , Wei Ye , Chunchun Chen , Xin Sun , Christian Böhm , Claudia Plant , Susanto Rahardja