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2020 11th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON)最新文献

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Maximizing Airtime Efficiency for Reliable Broadcast Streams in WMNs with Multi-Armed Bandits 多武装盗匪WMNs中可靠广播流的时间效率最大化
Giovanni Perin, David Nophut, L. Badia, F. Fitzek
Wireless broadcast routing is a complex problem, shown in the literature to be NP-complete. Current protocols implement either heuristics to find solutions that are not guaranteed to be optimal or classic flooding. However, many future use cases, like automotive applications, industrial robotics, and multimedia broadcast, will require efficient yet reliable methods. In this work, we use contextual multi-armed bandits together with opportunistic routing (OR) and network coding (NC) to find approximately optimal solutions to the problem of broadcast routing in a distributed fashion. Each router independently learns its own transmission credit, i.e., the number of packets to forward for each innovative packet received, so that the airtime cost, subject to latency constraints, is minimized. Results show that the proposed solutions, particularly the deep learning based one, vastly improve the overall reliability, while performing close to MORE multicast in terms of airtime and to B.A.T.M.A.N. in latency, both being the best candidates in the respective discipline among the tested ones.
无线广播路由是一个复杂的问题,在文献中显示是np完全的。当前的协议要么实现启发式方法来寻找不能保证最优的解决方案,要么实现经典泛洪。然而,许多未来的用例,如汽车应用、工业机器人和多媒体广播,将需要有效而可靠的方法。在这项工作中,我们将上下文多武装强盗与机会路由(OR)和网络编码(NC)一起使用,以分布式方式找到广播路由问题的近似最佳解决方案。每台路由器都独立地学习自己的传输信用,即接收到的每个创新数据包转发的数据包数量,以便在受延迟约束的情况下最小化传输时间成本。结果表明,所提出的解决方案,特别是基于深度学习的解决方案,极大地提高了整体可靠性,同时在通话时间方面执行接近MORE组播,在延迟方面执行接近B.A.T.M.A.N.,两者都是测试中各自学科的最佳候选方案。
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引用次数: 0
Three-Dimensional Down-View Imaging Based on MIMO Through-Wall-Radar 基于MIMO穿壁雷达的三维下视成像
Zihan Xu, Li Jiang, Yiduo Liang, Yong Jia, G. Cui, Longfei Tan
MIMO through-wall-radar is traditionally utilized to perform forward-view imaging (FVI) for the hidden targets behind the wall. Due to the limited view angle and target occlusion, FVI usually suffers from the problem of target missing in the case of multiple targets. In this paper, a novel down-view imaging (DVI) mode is presented to obtain robust three-dimensional (3D) multiple target images without target missing. Specifically, the propagation characteristic is analyzed for the 3D DVI in an enclosed building space. Then the DVI algorithm is introduced. Specifically, the back-projection algorithm is applied to form a 3D image and the exponential phase coherence factor (EPCF) weighting is adopted to suppress the multi-path ghosts. Based on the gprMax simulation results, in the presence of target occlusion, it is demonstrated that the presented DVI method has the ability to implement robust imaging for multiple targets, while the FVI misses the obscured target.
MIMO穿墙雷达传统上用于对墙后隐藏目标进行前视成像(FVI)。由于视角的限制和目标遮挡,在多目标情况下,FVI往往存在目标缺失的问题。本文提出了一种新的下视成像(DVI)模式,以获得鲁棒的三维多目标图像而不丢失目标。具体来说,分析了三维DVI在封闭建筑空间中的传播特性。然后介绍了DVI算法。具体而言,采用反投影算法生成三维图像,并采用指数相位相干系数(EPCF)加权来抑制多径鬼影。基于gprMax仿真结果,在目标遮挡存在的情况下,证明了所提出的DVI方法能够实现多目标的鲁棒成像,而FVI会遗漏被遮挡的目标。
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引用次数: 2
Backbone Neural Network Design of Single Shot Detector from RGB-D Images for Object Detection 基于RGB-D图像的单镜头目标检测骨干神经网络设计
P. Sharma, Damian Valles
Recognition technology has gained state of art performance with the dawn of deep convolutional neural network and with these achievements in the field of computer vision, machine learning and 3D sensor, industries are near to start new era of the automation. However, object detection for robotic grasping in varying environment, low illumination, occlusion and partial images gives poor accuracy and speed to detect object. In this research, a multimodal architecture is designed to be used as a base network/ backbone network of Single Shot Detector (SSD). This architecture uses RGB and Depth images as an input and gives single output. Most of the researchers used VGG16/19, ResNet and MobileNet for detection purposes. In this paper, a new architecture is designed to perform a specific task of grasping. For classification using RGB-D architecture, it achieved an average accuracy of 95% with the learning rate of 0.0001 and outperforms the other architectures in accuracy for limited objects.
随着深度卷积神经网络的出现,以及计算机视觉、机器学习和3D传感器领域的这些成就,识别技术已经获得了最先进的表现,工业即将开始自动化的新时代。然而,机器人抓取的目标检测在不同的环境、低照度、遮挡和局部图像下,检测目标的精度和速度较差。在本研究中,设计了一种多模态架构作为单次发射探测器(SSD)的基网/骨干网。该架构使用RGB和Depth图像作为输入,并给出单个输出。大多数研究人员使用VGG16/19、ResNet和MobileNet进行检测。本文设计了一种新的结构来执行特定的抓取任务。对于使用RGB-D架构的分类,其平均准确率达到95%,学习率为0.0001,并且在有限对象的准确率方面优于其他架构。
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引用次数: 4
Forecasting of COVID-19 in India Using ARIMA Model 基于ARIMA模型的印度COVID-19预测
Narayana Darapaneni, D. Reddy, A. Paduri, Pooja Acharya, H. S. Nithin
The recent outbreak of COVID-19 in different states of India has major concerns for all administrative departments of the government and general public. The Pandemic has been tested positive in 1287945 individuals with 817209 recovered and 30601 succumbed to the disease. The first case of the novel coronavirus was detected in India on 30 January 2020. There was a lockdown imposed by the Government of India from 24 March 2020 and ended on 31 May 2020. A forecast in no lockdown scenario would help us to track the further progress of the disease and make sufficient data available in order to plan the future of hospital facilities, pharmaceutical investment etc.
最近,印度不同邦暴发的新冠肺炎疫情引起了政府各行政部门和公众的高度关注。新冠肺炎确诊病例1287945例,康复病例817209例,死亡病例30601例。印度于2020年1月30日发现了首例新型冠状病毒病例。印度政府自2020年3月24日起实施封锁,至2020年5月31日结束。在不封锁情况下的预测将有助于我们跟踪疾病的进一步进展,并提供足够的数据,以便规划医院设施、制药投资等的未来。
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引用次数: 12
MINI-SSD: A Fast Object Detection Framework in Autonomous Driving MINI-SSD:自动驾驶中的快速目标检测框架
Shaimaa Ezz-ElDin, Omar Nabil, Hussam Murad, Farah Adel, Ahmed AbdEl-Jalil, K. Salah, Ayub Khan
In this paper, a python-implemented infrastructure of a CNN-based multi-object detector in autonomous driving using the single shot detector (SSD) is presented. The infrastructure consists of both training and inference for object detection. The main contribution of this paper is the design of the default anchor boxes tiling that reduce the amount of computations by simplifying the software implementation of the SSD object detector. This simplification is done by reducing the data path of the proposed detector. Moreover, a decrease in the inference time of the detector is the result of using tiled defaults boxes and a small number of layers in the VGG CNN. In addition, the CNN model presents an advantage in terms of high confidence boxes prediction. The proposed approach is faster due to the reduced number of layers and computations. The segmentation design of the input image anchor boxes is introduced to explain the software implementation. In addition, both the training and validation loss variations along the period of the training are illustrated.
本文提出了一种基于cnn的基于单镜头检测器(SSD)的自动驾驶多目标检测器的python实现架构。该基础结构包括目标检测的训练和推理。本文的主要贡献是设计了默认锚框平铺,通过简化SSD对象检测器的软件实现来减少计算量。这种简化是通过减少所提出的检测器的数据路径来完成的。此外,在VGG CNN中使用平铺默认框和少量层的结果是检测器推理时间的减少。此外,CNN模型在高置信度盒预测方面具有优势。由于减少了层数和计算量,该方法的速度更快。介绍了输入图像锚盒的分割设计,说明了软件的实现。此外,还说明了训练损失和验证损失随训练周期的变化。
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引用次数: 1
Performance Evaluation of Machine Learning for Prediction of Network Traffic in a Smart Home 机器学习在智能家居网络流量预测中的性能评估
Faisal Alghayadh, D. Debnath
The network system of smart homes using a Internet of Things (IoT) device is increasing in parallel with cybersecurity challenges as these loT devices have some vulnerabilities such as hardware and software limitations that leads to difficulties with time to fit security features to any IoT systems. Therefore, the Intrusion Detection Systems (IDS) is the suggested method to mitigate these cyberattacks and monitor the requests in smart homes. IDS has the capacity to protect the smart home network and detect real-time vulnerabilities and threats. In this paper, we applied and compared four types of machine learning algorithms which are random forest, xgboost, decision tree, and k-nearest neighbors on two sorts of datasets. We randomly selected three samples from each dataset. The results show that our models for each algorithm can effectively achieve a satisfying seemingly classification accuracy with the lowest false positive rate.
使用物联网(IoT)设备的智能家居网络系统与网络安全挑战同时增加,因为这些loT设备存在一些漏洞,例如硬件和软件限制,导致随着时间的推移难以将安全功能适应任何物联网系统。因此,入侵检测系统(IDS)是缓解这些网络攻击和监控智能家居请求的建议方法。IDS具有保护智能家庭网络和检测实时漏洞和威胁的能力。在本文中,我们在两类数据集上应用并比较了随机森林、xgboost、决策树和k近邻四种类型的机器学习算法。我们从每个数据集中随机选择三个样本。结果表明,我们对每种算法的模型都能以最低的误报率有效地获得令人满意的表面分类精度。
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引用次数: 5
Conceptual Neuroadaptive Brain Computer Interface for Autonomous Control of Automobile Brakes 汽车刹车自主控制的概念神经自适应脑机接口
Devaj Parikh, K. George
A link can be established between the human brain and an external device utilizing the Brain-Computer Interface technique which uses Electroencephalogram (EEG) signals. We can reduce car accidents occurring due to short-braking by applying this technique to the brakes for an automobile. This paper presents a system based on signals from the cerebellum part of the brain to control the brakes of an automobile. The system comprises of an ultra-cortex headset, personal computers with Processing IDE, and an Arduino board to control the braking mechanism. Three subjects tested the system where each subject performed four trials. Testing was performed to determine the time difference between the system to complete the action and the human to perform the same. The average time response measured was found to be 450ms for a human and 250ms for the system.
利用脑电图(EEG)信号的脑机接口技术,可以在人脑和外部设备之间建立联系。我们可以把这项技术应用到汽车的刹车上,以减少由于短制动而发生的车祸。本文提出了一种基于大脑小脑部分的信号来控制汽车刹车的系统。该系统由一个ultra-cortex头戴式耳机、带有处理IDE的个人电脑和一个用于控制制动机构的Arduino板组成。三名受试者对该系统进行测试,每个受试者进行四次试验。进行测试以确定系统完成动作和人类执行相同动作之间的时间差。测量的平均时间响应发现,人类为450ms,系统为250ms。
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引用次数: 1
Radar Pulse on Pulse Identification Parallel FFT and Power Envelope Algorithm 雷达脉冲对脉冲识别的并行FFT和功率包络算法
Jordan Juliano, Jaron Lin, Alex Erdogan, K. George
Identification of pulse radar signals is a crucial component in radar receiver processing. Extracting RF radar pulse information in wideband receivers in a dense and noisy environment without prior knowledge of the signal is challenging in high-risk real-time scenarios. Overlapping radar pulses can create complications in identification by creating interference between the signals, causing loss or hidden information. This paper presents a deinterleaving overlapping radar pulse train process by correlating the pulse descriptor words (PDW) of a power envelope based deinterleaving algorithm with a parallel fast Fourier transform (FFT) based deinterleaving algorithm implemented on an MPSoC FPGA.
脉冲雷达信号的识别是雷达接收机处理中的一个关键环节。在没有事先了解信号的情况下,在密集和嘈杂的环境中提取宽带接收机中的射频雷达脉冲信息,在高风险的实时场景中具有挑战性。重叠的雷达脉冲会在信号之间产生干扰,导致信息丢失或隐藏,从而使识别变得复杂。通过将基于功率包络线的去交错算法的脉冲描述词(PDW)与基于并行快速傅立叶变换(FFT)的去交错算法相关联,提出了一种基于MPSoC FPGA的去交错重叠雷达脉冲序列的去交错处理方法。
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引用次数: 2
An Event Detection Platform to Detect Gender Using Deep Learning 基于深度学习的事件性别检测平台
Abdulrahman Aldhaheri, Je Lee, Khaled Almgren
There are many events that occur in e-commerce platforms, which can be used to detect and understand the behavior of online users. Behavior analyses of e-commerce users can be utilized to impact both customers and businesses. Behavior analysis seeks to find useful information from clickstreams, which can be used to address challenging problems. Clickstreams quantify users’ movements based on the items they click on an e-commerce website. This work aims to mine clickstreams to predict users’ genders. The proposed approach utilizes deep learning and has been tested on a real-world dataset; the proposed approach outperformed others in terms of accuracy.
电子商务平台中发生的事件很多,可以用来检测和了解在线用户的行为。电子商务用户的行为分析可以用来影响客户和企业。行为分析旨在从点击流中找到有用的信息,这些信息可以用来解决具有挑战性的问题。点击流根据用户在电子商务网站上点击的物品来量化用户的活动。这项工作旨在挖掘点击流来预测用户的性别。所提出的方法利用了深度学习,并已在真实数据集上进行了测试;所提出的方法在准确性方面优于其他方法。
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引用次数: 0
Using BERT to Extract Topic-Independent Sentiment Features for Social Media Bot Detection 基于BERT提取话题无关情感特征的社交媒体机器人检测
Maryam Heidari, James H. Jones
Millions of online posts about different topics and products are shared on popular social media platforms. One use of this content is to provide crowd-sourced information about a specific topic, event, or product. However, this use raises an important question: what percentage of the information available through these services is trustworthy? In particular, might some of this information be generated by a machine, i.e., a "bot" instead of a human? Bots can be, and often are, purposely designed to generate enough volume to skew an apparent trend or position on a topic, yet the consumer of such content cannot easily distinguish a bot post from a human post. This paper introduces a new model that uses Bidirectional Encoder Representations from Transformers (Google Bert) for sentiment classification of tweets to identify topic-independent features for the social media bot detection model. Using a Natural Language Processing approach to derive topic-independent features for the new bot detection model distinguishes this work from previous bot detection models. We achieve 94% accuracy classifying the contents of Cresci data set [1] as generated by a bot or a human, where the most accurate prior work achieved an accuracy of 92%.
在流行的社交媒体平台上,数以百万计的关于不同话题和产品的在线帖子被分享。此内容的一个用途是提供关于特定主题、事件或产品的众包信息。然而,这种用法提出了一个重要的问题:通过这些服务提供的信息中有多少是可信的?特别是,其中一些信息可能是由机器(即“bot”)而不是人类生成的吗?机器人可以,而且经常是,故意设计来产生足够的量来扭曲一个主题的明显趋势或立场,然而这些内容的消费者无法轻易区分机器人的帖子和人类的帖子。本文介绍了一种新的模型,该模型使用来自变形金刚的双向编码器表示(Google Bert)对推文进行情感分类,为社交媒体机器人检测模型识别与主题无关的特征。使用自然语言处理方法为新的机器人检测模型派生与主题无关的特征,将这项工作与以前的机器人检测模型区分开来。我们将Cresci数据集[1]的内容分类为机器人或人类生成的准确率达到了94%,其中最准确的先前工作达到了92%的准确率。
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引用次数: 61
期刊
2020 11th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON)
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