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IEEE EUROCON 2021 - 19th International Conference on Smart Technologies最新文献

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Sentiment Analysis of Short Informal Text by Tuning BERT - Bi-LSTM Model 基于BERT - Bi-LSTM模型的非正式短文本情感分析
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535535
Shreyas Agrawal, Sumanto Dutta, Bidyut Kr. Patra
Sentiment analysis is one of the significant tasks in processing natural language by a machine. However, it is difficult for a machine to understand the feelings of a person and opinion about a topic. Many approaches have been introduced for analyzing sentiment from long text in recent past. In contrast, these approaches fail to address the small length text problem like Twitter data efficiently. Recent advances in the pre-trained contextualized embeddings like Bidirectional Encoder Representations from Transformers (BERT) show far greater accuracy than traditional embeddings. In this paper, we develop a novel architecture to tune the BERT using a Bidirectional Long Short-Term Memory (Bi-LSTM) model. A task-specific layer is incorporated along with the BERT in the proposed model. Our model extracts sentiment from short texts, especially Twitter data. The extensive experiments show the superiority of our model over state-of-the-art models in sentiment analysis task across several gold standard datasets.
情感分析是机器处理自然语言的重要任务之一。然而,机器很难理解一个人的感受和对一个话题的看法。近年来,人们提出了许多方法来分析长文本的情感。相比之下,这些方法不能有效地解决像Twitter数据这样的小长度文本问题。最近在预训练情境化嵌入方面的进展,如变形金刚的双向编码器表示(BERT),显示出比传统嵌入更高的准确性。在本文中,我们开发了一种使用双向长短期记忆(Bi-LSTM)模型来调整BERT的新架构。在提议的模型中,与BERT一起合并了一个特定于任务的层。我们的模型从短文本中提取情感,尤其是Twitter数据。广泛的实验表明,我们的模型在多个金标准数据集的情感分析任务中优于最先进的模型。
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引用次数: 6
Wind Speed Assessment and Techno-Economic Analysis of a Community Microgrid in Warm and Humid Climate Zone of India 印度暖湿气候区社区微电网风速评估及技术经济分析
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535543
N. Himabindu, Santoshkumar Hampannavar, M. Swapna, K. Patil
In this paper, wind speed assessment of a wind site located in BELAGAVI under warm humid climatic zone is proposed. Weibull and Rayleigh models were used for the statistical analysis and typical meteorological year (TMY) data was considered. Rayleigh model was found to be suitable compared to Weibull model for BELAGAVI site. The techno-economic analysis of a community microgrid in the same location was carried out considering hybrid renewable energy system for grid connected and off grid system. Promising results were obtained in terms of model and cost.
本文提出了暖湿气候带下BELAGAVI某风场的风速评价方法。采用Weibull和Rayleigh模型进行统计分析,并考虑典型气象年(TMY)数据。与Weibull模型相比,Rayleigh模型更适合于BELAGAVI站点。考虑可再生能源并网和离网混合系统,对同一地点的社区微电网进行了技术经济分析。在模型和成本方面取得了令人满意的结果。
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引用次数: 0
Deep Learning Techniques for the Real Time Detection of Covid19 and Pneumonia using Chest Radiographs 利用胸片实时检测covid - 19和肺炎的深度学习技术
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535604
A. Panwar, Rishika Yadav, Kishor Mishra, Siddharth Gupta
The newly detected virus also called coronavirus spreads the disease Covid19. World Health Organization (WHO) confirmed this virus as a worldwide pandemic as it has infected millions of people and has taken away many lives across the globe. An infection caused by Covid19 disease majorly destroys the respiratory tract of human beings that ends with multiple organ failures or death in the worst case. In the present work, chest radiographs were provided as input to various deep learning CNN architectures for the purpose of feature extraction. After extracting the features, the images were provided as the input to various machine learning classifiers that classify the chest radiographs as Covid-19 positive, pneumonia infection, or healthy scans.
这种新发现的病毒也被称为冠状病毒,它会传播covid - 19。世界卫生组织(WHO)确认,这种病毒已经感染了数百万人,并在全球范围内夺走了许多人的生命。新冠肺炎引起的感染主要是破坏人类的呼吸道,最严重的情况下会导致多器官衰竭或死亡。在本研究中,我们将胸片作为各种深度学习CNN架构的输入,用于特征提取。提取特征后,将图像作为输入提供给各种机器学习分类器,这些分类器将胸片分类为Covid-19阳性,肺炎感染或健康扫描。
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引用次数: 26
Human Kidney Tissue Image Segmentation by U-Net Models 基于U-Net模型的人体肾脏组织图像分割
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535599
Roman Statkevych, S. Stirenko, Yuri G. Gordienko
Segmentation approaches based on deep neural networks are researched for the microscopical images of the human kidney tissues. Several existing methods, used for medical imaging analysis and based on neural networks, were examined. Among several U-Net architectures, which are widely used for image segmentation, some their variations demonstrated the quite high performance despite the 4 times lower model size. As a result, the reasonable precision was obtained by a rudimentary network architectures and limited train time augmentations. It will open the promising perspectives for their deployment of the Edge Computing devices with the limited computing resources.
研究了基于深度神经网络的人体肾组织显微图像分割方法。研究了几种现有的基于神经网络的医学影像分析方法。在广泛用于图像分割的几种U-Net架构中,尽管模型尺寸减小了4倍,但它们的一些变体显示出相当高的性能。通过初步的网络结构和有限的列车时间增量,获得了合理的精度。这将为他们在有限的计算资源下部署边缘计算设备打开有希望的前景。
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引用次数: 0
Local Energy Trading Under Emerging Regulatory Frameworks: Impacts on Market Participants and Power Balance in Distribution Grids 新兴监管框架下的地方能源交易:对市场参与者和配电网电力平衡的影响
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535547
L. Herenčić, Perica Ilak, I. Rajšl, Marko Kelava
Local energy trading is a concept that allows trading between distribution grid participants such as consumers, producers, and prosumers on a local level in a transparent and competitive way. This can provide better local demand-supply balancing, decrease voltage deviations, and improve social welfare. However, economic feasibility of implementation of such a concept greatly depends on regulatory framework, as certain regulatory provisions can either lead to barriers and costs that can undermine the potential benefits of local energy trading, or support implementation of such projects. In this paper, feasibility of local energy trading under different variations of regulatory framework are assessed and implications on market participants and energy balance in distribution grids analyzed. It is shown that regulatory provisions have high influence on potential benefits and implementation of local energy trading in wider scope.
本地能源交易是一个概念,它允许配电网络参与者(如消费者、生产者和产消者)在本地以透明和竞争的方式进行交易。这可以提供更好的本地供需平衡,减少电压偏差,提高社会福利。然而,实施这一概念的经济可行性在很大程度上取决于监管框架,因为某些监管规定可能导致障碍和成本,从而破坏当地能源交易的潜在利益,或支持此类项目的实施。本文评估了不同监管框架下地方能源交易的可行性,并分析了对市场参与者和配电网能源平衡的影响。研究表明,在更大范围内,监管规定对地方能源交易的潜在效益和实施有很大影响。
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引用次数: 5
Modeling and Simulation for Capacity Fade Prediction of Lithium-Ion Battery 锂离子电池容量衰减预测的建模与仿真
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535594
B. Bairwa, Santoshkumar Hampannavar, Kaushik S Vishal, K. Bhargavi
This work shows the modeling and simulation-based health analysis for the lithium-ion battery. In the lithiumion batteries health is the burning issue. In this work health is predicted for the lithium-ion single cell. The lithium-ion generic model is trained by the various number of charging and discharging cycles 100 cycle to 1000 cycles for the analysis. Lithium-ion battery voltage is predicted with aging at constant discharging rate 1C. The capacity of the battery compared with the SoC of the with time and voltage. Nominal 3.8 volt and 2Ah rated Lithium Ion NMC cell have been investigated for this work .This study exhibits the lithium ion battery health condition with higher use of the battery in the everyday day life. The simulation results show the overall capacity fading behaviour in the proposed work.
这项工作展示了基于建模和仿真的锂离子电池健康分析。在锂离子电池中,健康是最紧迫的问题。在这项工作中,对锂离子单体电池的健康状况进行了预测。锂离子通用模型通过不同的充放电循环次数进行训练,从100次循环到1000次循环进行分析。在恒放电倍率1C下,对锂离子电池电压进行了老化预测。电池容量与SoC的比较随时间和电压的变化而变化。本研究以标称3.8伏、额定2Ah的锂离子NMC电池为研究对象,展示了锂离子电池在日常生活中使用频率较高时的健康状况。仿真结果显示了所提算法的总体容量衰落行为。
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引用次数: 11
A Random Selection Based Substitution-box Structure Dataset for Cryptology Applications 密码学应用中基于随机选择的替换盒结构数据集
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535569
Habib Ibrahim, F. Özkaynak
The cryptology science has gradually gained importance with our digitalized lives. Ensuring the security of data transmitted, processed and stored across digital channels is a major challenge. One of the frequently used components in cryptographic algorithms to ensure security is substitution-box structures. Random selection-based substitution-box structures have become increasingly important lately, especially because of their advantages to prevent side channel attacks. However, the low nonlinearity value of these designs is a problem. In this study, a dataset consisting of twenty different substitution-box structures have been publicly presented to the researchers. The fact that the proposed dataset has high nonlinearity values will allow it to be used in many practical applications in the future studies. The proposed dataset provides a contribution to the literature as it can be used both as an input dataset for the new post-processing algorithm and as a countermeasure to prevent the success of side-channel analyzes.
随着我们的数字化生活,密码学逐渐变得重要起来。确保跨数字通道传输、处理和存储数据的安全性是一项重大挑战。替换盒结构是加密算法中常用的保证安全性的组件之一。基于随机选择的替换盒结构近年来变得越来越重要,特别是因为它们在防止侧信道攻击方面的优势。然而,这些设计的低非线性值是一个问题。在这项研究中,一个由20种不同的替代盒结构组成的数据集已经公开呈现给研究人员。所提出的数据集具有高非线性值的事实将使其在未来的研究中用于许多实际应用。所提出的数据集为文献提供了贡献,因为它既可以用作新的后处理算法的输入数据集,也可以用作防止侧信道分析成功的对策。
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引用次数: 1
Image Enhancement by Gain-Limited Histogram Equalization 基于增益限制直方图均衡化的图像增强
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535605
S. Yelmanov, Y. Romanyshyn
This study is devoted to the problem of improving digital image and video in real-time applications. This paper looks at the task of enhancing images in automatic mode without distortions and loss of information. This work addresses the challenge of improving the effectiveness of image enhancement based on the use of the technique of clipped histogram equalization. To that end, we offer a new technique to image enhancement by gain-limited histogram equalization (GLHE). The proposed GLHE technique is based on a new approach to normalizing the result of clipped histogram equalization. This approach improves the efficiency of improving complex images without the appearance of undesirable distortions and artifacts. The proposed GLHE technique is intended to be used in real-time applications to normalize and improve video content.
本研究致力于改善数字图像和视频在实时应用中的问题。本文研究了在不失真和信息丢失的情况下自动增强图像的任务。这项工作解决了基于使用剪切直方图均衡化技术提高图像增强有效性的挑战。为此,我们提出了一种新的图像增强技术——增益限制直方图均衡化(GLHE)。本文提出的GLHE技术是基于一种新的方法对截断直方图均衡化的结果进行归一化。这种方法提高了改进复杂图像的效率,而不会出现不希望出现的失真和伪影。所提出的GLHE技术旨在用于实时应用中对视频内容进行规范化和改进。
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引用次数: 0
Towards Lower Precision Quantization for Pedestrian Detection in Crowded Scenario 面向低精度量化的拥挤行人检测
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535539
Mickael Cormier, Dmitrii Seletkov, J. Beyerer
Automatic pedestrian detection in real-world un-cooperative scenarios is a well-known problem in computer vision, which has again gained in visibility last year due to distancing requirements. This remains a very challenging task, especially in crowded areas. Due to diverse technical and privacy issues, embedded systems such as smart cameras and smaller drones are becoming ubiquitous. Those complex detection models are not designed for on-edge processing in resource-constrained environments. Therefore, quantization techniques are required, in order to reduce the weights of a model to low-precision and not only effectively compress the model, but also allow to use low bitwidth arithmetic, which in term can be accelerated from specialized hardware. However, using an effective quantization scheme while maintaining accuracy is challenging. In this work we first establish a Quantization-aware training (QAT) and Post-training Quantization (PTQ) baseline for 8-bit uniform quantization to RetinaNet for person detection on the extremely challenging PANDA dataset. Those achieve near lossless performance in terms of accuracy by about 5× speed-up of the CPU inference and 4× model size reduction for 8-bit PTQ quantized model. Further experiments with aggressive quantization scheme in 4- and 2-bit show diverse challenges resulting in severe instabilities. We apply both uniform and non-uniform quantization to overcome those and provide insights and strategies to fully quantize in 4- and 2-bit. Through this process we systematically evaluate the sensibility of individual parts of RetinaNet for quantization in very low precision. Finally, we show the resistance of quantization for limited amount of data.
现实世界中非合作场景下的行人自动检测是计算机视觉中一个众所周知的问题,由于距离要求,该问题在去年再次获得了关注。这仍然是一项非常具有挑战性的任务,特别是在人口密集的地区。由于各种技术和隐私问题,智能相机和小型无人机等嵌入式系统正变得无处不在。这些复杂的检测模型不是为资源受限环境中的边缘处理而设计的。因此,需要量化技术,将模型的权重降低到低精度,不仅可以有效地压缩模型,还可以使用低位宽算法,这在一定程度上可以从专门的硬件加速。然而,在保持精度的同时使用有效的量化方案是具有挑战性的。在这项工作中,我们首先建立了量化感知训练(QAT)和训练后量化(PTQ)基线,用于在极具挑战性的PANDA数据集上对RetinaNet进行8位均匀量化,用于人员检测。对于8位PTQ量化模型,它们通过大约5倍的CPU推理速度和4倍的模型尺寸减小来实现接近无损的精度性能。对4位和2位主动量化方案的进一步实验表明,各种挑战导致严重的不稳定性。我们应用均匀和非均匀量化来克服这些问题,并提供在4位和2位完全量化的见解和策略。通过这个过程,我们系统地评估了retanet的各个部分在极低精度下量化的敏感性。最后,我们展示了量化在有限数据量下的阻力。
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引用次数: 1
Speed Control of PMSM Fed By Bridgeless PFC Isolated Cuk Converter Using LCL filter 采用LCL滤波器的无桥PFC隔离Cuk变换器永磁同步电动机速度控制
Pub Date : 2021-07-06 DOI: 10.1109/EUROCON52738.2021.9535536
Burhan Hükümen, E. Şehirli
In this paper, a LCL filtered power factor corrected (PFC) converter to feed permanent magnet synchronous machines (PMSM) having field-oriented control (FOC) method has been proposed. In order to compensate the total harmonic distortion (THD) and poor power factor (PF) problem while achieving the high efficiency and reducing the switching losses of the converter and the voltage source inverter (VSI), the proposed system has been designed as LCL filtered bridgeless single-stage PFC isolated cuk converter for low power applications. Value of the output inductor provides discontinuous conduction mode (DCM) operation for reducing the conduction losses on switches of the converter. On the other hand, source filter was designed as LCL type to ensure power quality improvement. Results of this paper through the simulation have demonstrated that the proposed system has a capability to drive low power applications within the boundaries of international power quality standards and speed of the PMSM was controlled as desired.
本文提出了一种LCL滤波功率因数校正(PFC)变换器,以磁场定向控制(FOC)方式馈入永磁同步电机(PMSM)。为了补偿变换器和电压源逆变器(VSI)的总谐波失真(THD)和差功率因数(PF)问题,同时实现高效率和降低开关损耗,本文提出的系统被设计为低功耗应用的LCL滤波无桥单级PFC隔离cuk变换器。输出电感的值提供不连续导通模式(DCM)操作,以减少变换器开关的导通损耗。另一方面,源滤波器设计为LCL型,以保证电能质量的提高。仿真结果表明,所提出的系统具有在国际电能质量标准范围内驱动低功耗应用的能力,并且可以控制永磁同步电机的速度。
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引用次数: 1
期刊
IEEE EUROCON 2021 - 19th International Conference on Smart Technologies
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