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2020 12th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)最新文献

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HTC Vive as a Ground-Truth System for Anchor-Based Indoor Localization HTC Vive作为基于锚定的室内定位的Ground-Truth系统
Laura Flueratoru, E. Lohan, J. Nurmi, D. Niculescu
The last decade has seen a surge in the popularity of indoor localization systems. Researchers and companies keep searching for technologies that can locate users on a large scale with low costs and the highest possible accuracy. When evaluating the accuracy of a localization system, there is a trade-off between the cost and labor involved in acquiring ground-truth measurements. The cheapest option is to acquire measurements in fixed spots and manually compute their true location in a local coordinate system using distance measuring tools. However, this method is prone to human errors and has a high setup overhead. In contrast, high-end motion capture systems are easy to set up but have prohibitive prices. A middle-of-the-road solution is to use a consumer-grade motion capture system such as the HTC Vive which, although designed for virtual reality video games, can be adapted for scientific applications. We propose a ground-truth system for anchor-based indoor localization systems which builds on the HTC Vive and we demonstrate its use on ultra-wideband (UWB) localization. We apply Procrustes Analysis to bring location data sets into the coordinate system of a room, in order to easily overlap, visualize, and analyze measurements. We use the HTC Vive to acquire the locations of UWB anchors, which allows users to quickly test which hardware placement yields the lowest localization error. The resulting ground-truth system costs under $1000, has an average accuracy of more than 5 mm, is easy to set up, and can be used for both static and dynamic measurements.
在过去的十年里,室内定位系统的普及程度激增。研究人员和公司一直在寻找能够以低成本和尽可能高的准确性大规模定位用户的技术。在评估定位系统的精度时,需要在获取地面真值测量所涉及的成本和劳动力之间进行权衡。最便宜的选择是在固定地点获得测量值,并使用距离测量工具在当地坐标系中手动计算其真实位置。但是,这种方法容易出现人为错误,并且设置开销很高。相比之下,高端动作捕捉系统容易安装,但价格令人望而却步。一个中间的解决方案是使用像HTC Vive这样的消费级动作捕捉系统,尽管它是为虚拟现实视频游戏设计的,但也可以用于科学应用。我们提出了一个建立在HTC Vive上的基于锚点的室内定位系统的真实系统,并演示了它在超宽带(UWB)定位中的应用。我们应用Procrustes Analysis将位置数据集带入房间的坐标系统,以便轻松地重叠、可视化和分析测量结果。我们使用HTC Vive来获取UWB锚点的位置,这允许用户快速测试哪种硬件放置产生的定位误差最低。由此产生的地面真值系统成本低于1000美元,平均精度超过5毫米,易于设置,可用于静态和动态测量。
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引用次数: 6
Review and Analysis of the Classical and Post-Quantum Ring Signature Algorithms 经典和后量子环签名算法的回顾与分析
A. Leevik, V. Beliaev, Boris Stasenko, Vadim V. Davydov, S. Bezzateev
In this paper a review and analysis of ring signature algorithms based on discrete logarithm and code-based problems is made. The authors consider Linkable and Multilayer Linkable Spontaneous Anonymous Group Signatures which are based on the discrete logarithm problem. Taking into the account the fact that quantum computers have already been developed, we look at different variations of code-based signatures (linkable, multilayer linkable, traceable and threshold) and analyse the efficiency of their use. Finally, the analysis of these signatures is made and standard code-based algorithms are compared.
本文综述和分析了基于离散对数和基于码的环签名算法。研究了基于离散对数问题的可链接和多层可链接自发匿名群签名。考虑到量子计算机已经被开发出来的事实,我们研究了基于代码的签名的不同变体(可链接的、多层可链接的、可追踪的和阈值的),并分析了它们的使用效率。最后,对这些签名进行了分析,并对基于标准代码的算法进行了比较。
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引用次数: 0
ICUMT 2020 Table of Contents ICUMT 2020目录
T. Cjjm, Icumt
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引用次数: 0
Parkinson’s Disease Detection based on Changes of Emotions during Speech 基于言语情绪变化的帕金森病检测
Justyna Skibinska, Radim Burget
Parkinson’s disease (PD) is the neurodegenerative disease which affects 2-3 % of the population beyond 65 years of age in EU. When PD treatment is administered early, it is significantly more effective. Unfortunately, it is quite challenging to detect this disease at its early stage and when the symptoms can be recognized it is usually quite late. For this reason there is big motivation for development more accessible and accurate solutions for the detection of PD. One of the early symptoms is so-called hypomimia. This paper introduces an automatic method, which can objectively detect PD. The method is based on analysis of emotion changes during pronunciation defined speech exercises. We achieved balanced accuracy 69 % using XGBoost algorithm. As the exercise we proposed to use a Czech tongue twister - the difficult to pronounce sentence. The features can be explained and thus it can be used in clinical practice. We identified that the most valuable emotion for PD detection in this case is fear.
帕金森病(PD)是一种神经退行性疾病,影响欧盟65岁以上人口的2- 3%。如果PD治疗在早期进行,效果会显著提高。不幸的是,在早期发现这种疾病是非常具有挑战性的,当症状被识别出来时,通常已经很晚了。出于这个原因,有很大的动机开发更容易获得和准确的解决方案来检测PD。早期症状之一是所谓的低血氧症。本文介绍了一种能够客观检测PD的自动检测方法。该方法是基于对语音定义练习中情绪变化的分析。我们使用XGBoost算法实现了69%的平衡精度。在练习中,我们建议使用捷克语绕口令——一个很难发音的句子。这些特征是可以解释的,因此可以用于临床实践。我们发现,在这种情况下,对PD检测最有价值的情绪是恐惧。
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引用次数: 7
Delay prediction in IoT using Machine Learning Approach 使用机器学习方法的物联网延迟预测
A. Abdellah, O. A. Mahmood, A. Koucheryavy
The combination of 5G, artificial intelligence, and the Internet of Things will have a great impact on future generations of wireless networks. Internet of Things (IoT) is expected to have important traffic exchange in future wireless networks. It is a generic term for technologies that allow devices to communicate with each other. These are wired and wireless sensing systems that send information from one device to another. The network traffic prediction problem includes the prediction of future network traffic characteristics from observations of past traffic. Network traffic forecasting has many applications including network monitoring, resource management, and fault detection. Machine learning (ML) has been successfully applied to traffic prediction. ML technologies have proven capable of capturing nonlinear patterns in data, making them a good candidate for traffic prediction. In this paper, we perform the delay prediction in IoT communication using a multistep ahead prediction (MSP) and single-step ahead prediction (SSP) with Time Series NARX Recurrent Neural Networks. The prediction accuracy has been evaluated using three neural network training algorithms: Trainlm, Traincgf, Trainrp, with MSE as performance function in terms of using root mean square error (RMSE) and mean absolute percentage error (MAPE) as prediction accuracy measure.
5G、人工智能和物联网的结合将对未来几代无线网络产生巨大影响。物联网(IoT)有望在未来无线网络中发挥重要的流量交换作用。它是允许设备相互通信的技术的通称。这些是有线和无线传感系统,可以将信息从一个设备发送到另一个设备。网络流量预测问题包括通过对过去流量的观察来预测未来网络流量的特征。网络流量预测在网络监控、资源管理、故障检测等方面有着广泛的应用。机器学习(ML)已成功应用于交通预测。ML技术已被证明能够捕获数据中的非线性模式,使其成为流量预测的良好候选。在本文中,我们使用多步提前预测(MSP)和单步提前预测(SSP)与时间序列NARX递归神经网络在物联网通信中进行延迟预测。采用Trainlm、Traincgf、Trainrp三种神经网络训练算法,以均方根误差(RMSE)和平均绝对百分比误差(MAPE)作为预测精度度量,以MSE为性能函数,对预测精度进行了评价。
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引用次数: 9
Gender Differentiated Convolutional Neural Networks for Speech Emotion Recognition 基于性别分化的卷积神经网络语音情感识别
P. Mishra, Ruchir Sharma
This paper proposes a two-stage gender-differentiated system for Speech Emotion Recognition using Mel-frequency Cepstral Coefficients and Convolutional Neural Networks. Acoustical variances between male and female speakers pose a problem and it is established that gender-dependent emotion recognizers perform better than gender-independent ones. The provided solution can recognize seven emotions (anger, disgust, fear, happiness, sadness, surprise, and neutral state). Data augmentation is used to compensate for the lack of quality data, with the raw speech samples derived from four datasets, namely: RAVDESS, CREMA-D, SAVEE, and TESS. The system is composed of two stages: 1) gender classification and; 2) emotion classification. The output of the gender classifier in the first stage determines the gender-specific classifier for the second stage. The experimental evaluation displays the performance in terms of the correct emotion recognition rate of the proposed SER model. The results demonstrate that a gender-differentiated system significantly improves performance. The obtained results also show that using Global Average Pooling instead of a fully-connected network at the end of the CNN classifier further improves the performance. Future implementations of this proposed system may allow effective human-computer intelligent interaction.
本文提出了一种基于mel频率倒谱系数和卷积神经网络的两阶段性别区分语音情感识别系统。男性和女性说话者之间的声音差异构成了一个问题,性别依赖的情绪识别器比性别独立的情绪识别器表现得更好。提供的解决方案可以识别七种情绪(愤怒,厌恶,恐惧,快乐,悲伤,惊讶和中性状态)。数据增强用于弥补质量数据的不足,原始语音样本来自四个数据集,即:RAVDESS, CREMA-D, SAVEE和TESS。该系统由两个阶段组成:1)性别分类和;2)情绪分类。第一阶段性别分类器的输出决定了第二阶段的性别分类器。实验评价显示了所提出的SER模型在情绪识别率方面的性能。结果表明,性别区分系统显著提高了绩效。得到的结果还表明,在CNN分类器的末端使用Global Average Pooling而不是全连接网络进一步提高了性能。该系统的未来实现可能允许有效的人机智能交互。
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引用次数: 4
On the performance slope of short LDPC codes 短LDPC码的性能斜率
L. Medova, P. Rybin, I. E. Sidorenko
The present work is a continuation of the previous study [1] on the performance of short LDPC codes. We have examined a sample of (128,256) different LDPC codes and explored their bit error-rate curves as a function of Tanner graph properties. It was found that certain graph characteristics correlate with LDPC code performance and can help to distinguish LDPC codes with a good decoding threshold (less or equal 3.5 dB) from others. In this work, we investigate a slope of bit error- rate curves that along with a decoding threshold provides an information on code performance.
本研究是对短LDPC码性能研究的延续。我们检查了(128,256)个不同LDPC码的样本,并探索了它们的误码率曲线作为坦纳图属性的函数。研究发现,某些图形特征与LDPC码性能相关,可以帮助区分具有良好解码阈值(小于或等于3.5 dB)的LDPC码。在这项工作中,我们研究了误码率曲线的斜率,它与解码阈值一起提供了代码性能的信息。
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引用次数: 0
Field Sensor Network for Microclimatological Measurements 用于微气候测量的现场传感器网络
R. Juran, A. Povalac
This paper brings an overview of the designed system for monitoring hydrothermal soil CO2 flux, especially its wireless infrastructure based on a private LoRaWAN network. There are interesting results in terms of LoRaWAN performance in the target location – valley of river Becva in the Hranice karst,ˇ a hydrothermal karst area located in the eastern Czech Republic, home of the famous deepest freshwater abyss in the world – Hranice Abbys. The main obtained key result is the overall performance of LoRaWAN infrastructure in the target area, based on iC880A gateway and nodes with Microchip RN2483, all registered in The Things Network. Measured data were obtained by sending WGS84 format coordinates through the network. Upon reception, the gateway supplemented the data with the parameters of the received signal and stored with the data to Google Spreadsheets. Since the weakest RSSI received within the are is well above -120 dBm, not reaching the -135 dBm limit of the gateway, the results suggest relatively good potential of this technology in this application, even though the environment is quite of diverse character, therefore the obstacles are not uniformly distributed and growing distance does not always imply more obstructing objects in the signal path.
本文介绍了所设计的热液土壤CO2通量监测系统,特别是其基于专用LoRaWAN网络的无线基础设施。LoRaWAN在目标位置(Hranice karst的Becva河山谷)的性能方面有有趣的结果,Hranice Abbys位于捷克共和国东部,是世界上著名的最深的淡水深渊- Hranice Abbys的所在地。主要获得的关键结果是目标区域的LoRaWAN基础设施的整体性能,基于iC880A网关和带有Microchip RN2483的节点,均注册在The Things Network中。测量数据通过网络发送WGS84格式坐标获得。网关接收到信号后,将接收到的信号参数进行数据补充,并与数据一起存储到Google Spreadsheets中。由于该区域内接收到的最弱RSSI远高于-120 dBm,而未达到网关的-135 dBm限制,因此结果表明该技术在该应用中具有相对良好的潜力,即使环境具有相当多样化的特征,因此障碍物并不均匀分布,距离的增加并不总是意味着信号路径中障碍物的增加。
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引用次数: 0
SCADA-based Message Generator for Multi-Vendor Smart Grids: Integration and Verification of TASE.2 基于scada的多厂商智能电网消息生成器:tase的集成与验证
Petr Ilgner, Martin Stusek, P. Cika, M. Sikora
This paper describes a system for generating messages according to the sets of standards IEC 60870-6 (ICCP/TASE.2). Particular attention is paid to messages exchanged between the power grid nodes and control centers. We discussed the typical grid network architecture and communication strategies. On this basis, we proposed and implemented the software to simulate real TASE.2 system operation in two different communication modes. The architecture of the designed generator is described in detail, including methods to ensure high-performance and scalability. The system supports the cryptographic security of the generated traffic. The proposed generator allows users to perform the complex testing and verification of the TASE.2 network nodes configuration, including the testing of connection to the related system such as message brokers and analytics tools. Due to the high performance and scalability of the proposed generator, it is possible to perform the stress testing of these systems.
本文描述了一个根据IEC 60870-6 (ICCP/TASE.2)标准集生成消息的系统。特别关注电网节点和控制中心之间交换的消息。讨论了典型的网格网络体系结构和通信策略。在此基础上,提出并实现了仿真软件,模拟了TASE.2系统在两种不同通信模式下的实际运行情况。详细描述了所设计的生成器的体系结构,包括保证高性能和可扩展性的方法。系统支持对生成的流量进行加密安全。建议的生成器允许用户执行TASE.2网络节点配置的复杂测试和验证,包括测试到相关系统(如消息代理和分析工具)的连接。由于所提出的发电机具有高性能和可扩展性,因此可以对这些系统进行压力测试。
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引用次数: 0
Managing COVID-19 Global Pandemic With High-Tech Consumer Wearables: A Comprehensive Review 利用高科技消费者可穿戴设备管理COVID-19全球大流行:全面回顾
Asma Channa, N. Popescu, N. Malik
The novel corona virus (COVID-19) created a havoc all around the globe without any prediction of its eradication. All the previous methods seemed to fail and exceptional considerations are now required to be deployed in order to deal with this pandemic. The aim of this retrospective study is to highlight the new solutions to manage and deal with the pandemic. This study discusses different e-health wearable devices that help in early diagnosis of COVID-19 symptoms and also presents an overview of some artificial intelligence and machine learning techniques applied on CT-scan or Chest X-ray images to refine the correct diagnosis of patients. Finally, this work addresses the importance of smart chat-bots that provides assistance to the people suffering from stress and anxiety during quarantine. These chat-bots can offer psychological therapies in isolation and can be very useful.
新型冠状病毒(COVID-19)在全球范围内造成了严重破坏,没有人预测它会被根除。以前的所有方法似乎都失败了,现在需要采取特殊的考虑,以对付这一流行病。这项回顾性研究的目的是强调管理和应对大流行病的新解决办法。本研究讨论了有助于早期诊断COVID-19症状的不同电子健康可穿戴设备,并概述了一些应用于ct扫描或胸部x射线图像的人工智能和机器学习技术,以改进患者的正确诊断。最后,这项工作解决了智能聊天机器人的重要性,它为隔离期间遭受压力和焦虑的人们提供了帮助。这些聊天机器人可以提供孤立的心理治疗,非常有用。
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引用次数: 7
期刊
2020 12th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
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