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Unsupervised machine learning, and in particular data clustering, is a powerful approach for the analysis of datasets and identification of characteristic features occurring throughout a dataset. It is gaining popularity across scientific…

介观与纳米尺度物理 · 物理学 2021-03-23 Maria El Abbassi , Jan Overbeck , Oliver Braun , Michel Calame , Herre S. J. van der Zant , Mickael L. Perrin

A bidirectional Ultra-Wideband (UWB) localization scheme is one of the three widely adopted design integration processes commonly used in time-based UWB positioning systems. The key property of bidirectional UWB localization is its ability…

系统与控制 · 电气工程与系统科学 2023-12-22 Cung Lian Sang , Michael Adams , Marc Hesse , Ulrich Rückert

Deep embedding methods have influenced many areas of unsupervised learning. However, the best methods for learning hierarchical structure use non-Euclidean representations, whereas Euclidean geometry underlies the theory behind many…

机器学习 · 计算机科学 2020-11-02 Jinyu Zhao , Yi Hao , Cyrus Rashtchian

Smart and unobtrusive mobile sensor nodes that accurately track their own position have the potential to augment data collection with location-based functions. To attain this vision of unobtrusiveness, the sensor nodes must have a compact…

系统与控制 · 电气工程与系统科学 2023-07-04 Philipp Mayer , Michele Magno , Luca Benini

Deep clustering (DC) is often quoted to have a key advantage over $k$-means clustering. Yet, this advantage is often demonstrated using image datasets only, and it is unclear whether it addresses the fundamental limitations of $k$-means…

机器学习 · 计算机科学 2026-02-06 Kai Ming Ting , Wei-Jie Xu , Hang Zhang

Precise indoor localization of moving targets is a challenging activity which cannot be easily accomplished without combining different sources of information. In this sense, the combination of different data sources with an appropriate…

网络与互联网体系结构 · 计算机科学 2013-05-09 Alberto Savioli , Emanuele Goldoni , Pietro Savazzi , Paolo Gamba

Identifying and handling label errors can significantly enhance the accuracy of supervised machine learning models. Recent approaches for identifying label errors demonstrate that a low self-confidence of models with respect to a certain…

机器学习 · 计算机科学 2024-05-17 Johannes Jakubik , Michael Vössing , Manil Maskey , Christopher Wölfle , Gerhard Satzger

With the increasing dependency of daily life over computer networks, the importance of these networks security becomes prominent. Different intrusion attacks to networks have been designed and the attackers are working on improving them.…

密码学与安全 · 计算机科学 2023-04-03 S. Lotfi , M. Modirrousta , S. Shashaani , M. Aliyari Shoorehdeli

Testing Ultra-Wideband (UWB) systems is challenging, as multiple devices need to coordinate over lossy links and the systems' behavior is influenced by timing, synchronization, and environmental factors. Traditional testing is often…

Monocular depth estimation (MDE) is a fundamental task in many applications such as scene understanding and reconstruction. However, most of the existing methods rely on accurately labeled datasets. A weakly-supervised framework based on…

计算机视觉与模式识别 · 计算机科学 2021-07-13 Fang Gao , Jiabao Wang , Jun Yu , Yaoxiong Wang , Feng Shuang

We present a novel deep neural network architecture for unsupervised subspace clustering. This architecture is built upon deep auto-encoders, which non-linearly map the input data into a latent space. Our key idea is to introduce a novel…

计算机视觉与模式识别 · 计算机科学 2017-09-11 Pan Ji , Tong Zhang , Hongdong Li , Mathieu Salzmann , Ian Reid

Penetrating detection and recognition of behind wall indoor human activities has drawn great attentions from social security and emergency service department in recent years since intelligent surveillance aforehand could avail the proper…

信号处理 · 电气工程与系统科学 2020-01-30 Qiang An , Shuoguang Wang , Ahmad Hoorfar , Wenji Zhang , Hao Lv , Shiyong Li , Jianqi Wang

A multiple input multiple output ultra-wideband cognitive radar based on compressive sensing is presented in this letter. For traditional UWB radar, high sampling rate analog to digital converter at the receiver is required to meet Shannon…

信息论 · 计算机科学 2016-04-18 Xia Li , Zhen Hu , Robert C. Qiu

We employ unsupervised machine learning to enhance the accuracy of our recently presented scaling method for wave confinement analysis [1]. We employ the standard k-means++ algorithm as well as our own model-based algorithm. We investigate…

With the ongoing development of Indoor Location-Based Services, the location information of users in indoor environments has been a challenging issue in recent years. Due to the widespread use of WiFi networks, WiFi fingerprinting has…

分布式、并行与集群计算 · 计算机科学 2024-06-05 Amin Kargar-Barzi , Ebrahim Farahmand , Nooshin Taheri Chatrudi , Ali Mahani , Muhammad Shafique

As a powerful approach for exploratory data analysis, unsupervised clustering is a fundamental task in computer vision and pattern recognition. Many clustering algorithms have been developed, but most of them perform unsatisfactorily on the…

计算机视觉与模式识别 · 计算机科学 2020-08-25 Pengfei Ge , Chuan-Xian Ren , Jiashi Feng , Shuicheng Yan

Ultra-Wideband (UWB) is one of the key technologies empowering the Internet of Thing (IoT) concept to perform reliable, energy-efficient, and highly accurate monitoring, screening, and localization in indoor environments. Performance of…

信号处理 · 电气工程与系统科学 2022-05-18 Zohreh Hajiakhondi-Meybodi , Ming Hou , Arash Mohammadi

Clustering using deep autoencoders has been thoroughly investigated in recent years. Current approaches rely on simultaneously learning embedded features and clustering the data points in the latent space. Although numerous deep clustering…

机器学习 · 计算机科学 2019-09-27 Nairouz Mrabah , Mohamed Bouguessa , Riadh Ksantini

This paper proposes a novel deep subspace clustering approach which uses convolutional autoencoders to transform input images into new representations lying on a union of linear subspaces. The first contribution of our work is to insert…

计算机视觉与模式识别 · 计算机科学 2020-01-24 Mohsen Kheirandishfard , Fariba Zohrizadeh , Farhad Kamangar

Precise indoor localization is an increasingly demanding requirement for various emerging applications, like Virtual/Augmented reality and personalized advertising. Current indoor environments are equipped with pluralities of WiFi access…

信号处理 · 电气工程与系统科学 2019-11-21 Chenlu Xiang , Shunqing Zhang , Shugong Xu , Xiaojing Chen , George C. Alexandropoulos , Vincent K. N. Lau