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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…

Machine Learning · Computer Science 2023-10-18 Chaoyue Ding , Shiliang Sun , Jing Zhao

Most activity localization methods in the literature suffer from the burden of frame-wise annotation requirement. Learning from weak labels may be a potential solution towards reducing such manual labeling effort. Recent years have…

Computer Vision and Pattern Recognition · Computer Science 2018-12-18 Sujoy Paul , Sourya Roy , Amit K Roy-Chowdhury

Recent years, the approaches based on neural networks have shown remarkable potential for sentence modeling. There are two main neural network structures: recurrent neural network (RNN) and convolution neural network (CNN). RNN can capture…

Computation and Language · Computer Science 2020-06-30 Zhenyu Liu , Haiwei Huang , Chaohong Lu , Shengfei Lyu

The currently most prominent algorithm to train keyword spotting (KWS) models with deep neural networks (DNNs) requires strong supervision i.e., precise knowledge of the spoken keyword location in time. Thus, most KWS approaches treat the…

Sound · Computer Science 2023-05-31 Heinrich Dinkel , Weiji Zhuang , Zhiyong Yan , Yongqing Wang , Junbo Zhang , Yujun Wang

Time Series Classification (TSC) has been an important and challenging task in data mining, especially on multivariate time series and multi-view time series data sets. Meanwhile, transfer learning has been widely applied in computer vision…

Machine Learning · Computer Science 2019-10-18 Donglin Zhan , Shiyu Yi , Dongli Xu , Xiao Yu , Denglin Jiang , Siqi Yu , Haoting Zhang , Wenfang Shangguan , Weihua Zhang

Acoustic Scene Classification (ASC) is a challenging task, as a single scene may involve multiple events that contain complex sound patterns. For example, a cooking scene may contain several sound sources including silverware clinking,…

Audio and Speech Processing · Electrical Eng. & Systems 2019-09-20 Weimin Wang , Weiran Wang , Ming Sun , Chao Wang

With the development of feed-forward models, the default model for sequence modeling has gradually evolved to replace recurrent networks. Many powerful feed-forward models based on convolutional networks and attention mechanism were…

Computation and Language · Computer Science 2023-10-17 Hongyan Hao , Yan Wang , Siqiao Xue , Yudi Xia , Jian Zhao , Furao Shen

Human skin segmentation is a crucial task in computer vision and biometric systems, yet it poses several challenges such as variability in skin color, pose, and illumination. This paper presents a robust data-driven skin segmentation method…

Computer Vision and Pattern Recognition · Computer Science 2023-02-10 Kooshan Hashemifard , Pau Climent-Perez , Francisco Florez-Revuelta

Weakly supervised semantic segmentation (WSSS) based on image-level labels is challenging since it is hard to obtain complete semantic regions. To address this issue, we propose a self-training method that utilizes fused multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Guoqing Yang , Chuang Zhu , Yu Zhang

Thanks to the rise of wearable and connected devices, sensor-generated time series comprise a large and growing fraction of the world's data. Unfortunately, extracting value from this data can be challenging, since sensors report low-level…

Machine Learning · Statistics 2016-09-30 Davis W. Blalock , John V. Guttag

We propose here an extended attention model for sequence-to-sequence recurrent neural networks (RNNs) designed to capture (pseudo-)periods in time series. This extended attention model can be deployed on top of any RNN and is shown to yield…

Machine Learning · Computer Science 2017-08-22 Yagmur G. Cinar , Hamid Mirisaee , Parantapa Goswami , Eric Gaussier , Ali Ait-Bachir , Vadim Strijov

In many applications, finding adequate labeled data to train predictive models is a major challenge. In this work, we propose methods to use group-level binary labels as weak supervision to train instance-level binary classification models.…

Machine Learning · Computer Science 2021-08-18 Guruprasad Nayak , Rahul Ghosh , Xiaowei Jia , Vipin Kumar

Multivariate time series are routinely encountered in real-world applications, and in many cases, these time series are strongly correlated. In this paper, we present a deep learning structural time series model which can (i) handle…

Machine Learning · Statistics 2020-01-03 Changwei Hu , Yifan Hu , Sungyong Seo

Labeling training data is a key bottleneck in the modern machine learning pipeline. Recent weak supervision approaches combine labels from multiple noisy sources by estimating their accuracies without access to ground truth labels; however,…

Machine Learning · Statistics 2019-03-15 Paroma Varma , Frederic Sala , Ann He , Alexander Ratner , Christopher Ré

Solving real-world problems, particularly with deep learning, relies on the availability of abundant, quality data. In this paper we develop a novel framework that maximises the utility of time-series datasets that contain only small…

Machine Learning · Computer Science 2019-06-04 Ivan Kiskin , Udeepa Meepegama , Steven Roberts

Attention-based deep networks have been successfully applied on textual data in the field of NLP. However, their application on protein sequences poses additional challenges due to the weak semantics of the protein words, unlike the plain…

Machine Learning · Computer Science 2022-08-29 Ashish Ranjan , Md Shah Fahad , Akshay Deepak

The research explores the utilization of a deep learning model employing an attention mechanism in medical text mining. It targets the challenge of analyzing unstructured text information within medical data. This research seeks to enhance…

Computation and Language · Computer Science 2024-06-04 Lingxi Xiao , Muqing Li , Yinqiu Feng , Meiqi Wang , Ziyi Zhu , Zexi Chen

With the popularity and development of the wearable devices such as smartphones, human activity recognition (HAR) based on sensors has become as a key research area in human computer interaction and ubiquitous computing. The emergence of…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Kun Wang , Jun He , Lei Zhang

Training a neural network model that can quickly adapt to a new task is highly desirable yet challenging for few-shot learning problems. Recent few-shot learning methods mostly concentrate on developing various meta-learning strategies from…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Zihang Jiang , Bingyi Kang , Kuangqi Zhou , Jiashi Feng

This paper proposes a novel neuro-symbolic approach for sensor signal-based knowledge discovery, focusing on identifying latent subclasses in time series classification tasks. The approach leverages gradient-based saliency maps derived from…

Artificial Intelligence · Computer Science 2025-11-11 Tim Bohne , Anne-Kathrin Patricia Windler , Martin Atzmueller