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2022 30th Signal Processing and Communications Applications Conference (SIU)最新文献

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5G Network Slicing using Machine Learning Techniques 使用机器学习技术的5G网络切片
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864770
Alper Endes, Baris Yuksekkaya
Communication systems to be delivered with the Fifth Generation (Fifth Generation, 5G) are expected to meet the requirements of high reliability, low delay, high security, high capacity, and high-speed. Mobile providers are looking for programmable solutions to provide numerous different services, and the 5G network structure provides a solution to this need using Network Slicing. In this study, artificial intelligence-based machine learning algorithms and methods of placing users in communication slices were examined by creating realistic user and base station data. Considered communication slices were selected as advanced mobile network (enhanced Mobile Broadband, eMBB), large-scale machine-type communication (mMTC), and ultra-low-latency data communication (Ultra-Reliable Low Latency Communications, URLLC). Two different machine learning models were created and tested in the proposed simulation environment, and their performances were compared.
随着第五代(第五代,5G)交付的通信系统预计将满足高可靠、低延迟、高安全、高容量和高速的要求。移动提供商正在寻找可编程的解决方案来提供多种不同的服务,而5G网络结构使用网络切片为这一需求提供了解决方案。在本研究中,通过创建真实的用户和基站数据,研究了基于人工智能的机器学习算法和将用户置于通信切片中的方法。考虑的通信切片选择为高级移动网络(增强型移动宽带,eMBB)、大型机器类型通信(mMTC)和超低延迟数据通信(超可靠低延迟通信,URLLC)。建立了两种不同的机器学习模型,并在提出的仿真环境中进行了测试,并比较了它们的性能。
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引用次数: 1
Anomaly Detection in Surveillance Videos Using Regression With Recurrent Neural Networks 基于回归神经网络的监控视频异常检测
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864893
Mehmet Yagan, E. Yilmaz, H. Özkan
Security cameras are widely used to detect and prevent crimes, but the number of surveillance videos has increased due to this prevalence. By processing these videos with the help of a suitable machine learning algorithm, unfavorable events can be brought to the attention of expert to manually monitor. Since these unfavorable events are of various types and few in number, this problem can be addressed in the anomaly detection structure. In this study, an anomaly detection algorithm has been developed using the UCF-Crime dataset consisting of 1900 surveillance videos of various lengths. First of all, features were extracted from these videos with the help of a pre-trained artificial neural network (ANN), the size of these features was reduced with another ANN, and the anomaly detection was performed using two different recurrent neural networks, one based on classification and the other based on future feature estimation by regression. Area under receiver operating characteristic (ROC) curve (AUC) was used as the evaluation criterion. At video level, regression method gives a better performance with 88.71% AUC than the classification method which only gives 85.82% AUC, while at video frame level, both methods perform similarly with 73.64% and 73.71%, but there are true positive rate ranges where they perform better than each other.
监控摄像机被广泛用于侦查和预防犯罪,但监控视频的数量也因此增加。通过适当的机器学习算法对这些视频进行处理,可以将不利事件引起专家的注意,进行人工监控。由于这些不利事件类型多,数量少,因此可以在异常检测结构中解决这一问题。在本研究中,使用由1900个不同长度的监控视频组成的UCF-Crime数据集开发了一种异常检测算法。首先,利用预训练的人工神经网络(ANN)从这些视频中提取特征,用另一个人工神经网络对这些特征进行缩减,并使用两种不同的递归神经网络进行异常检测,一种基于分类,另一种基于回归的未来特征估计。以受试者工作特征曲线下面积(AUC)作为评价标准。在视频级别,回归方法的AUC为88.71%,优于分类方法的85.82%,而在视频帧级别,两种方法的AUC分别为73.64%和73.71%,但在真阳性率范围内,它们的表现优于彼此。
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引用次数: 0
Coplanar-Waveguide Fed Microstrip Dual- Band Bandstop Filters with Inductively Coupled Dual-Mode Ring Resonators 带电感耦合双模环形谐振器的共面波导馈电微带双带阻滤波器
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864825
E. G. Sahin
This paper presents a novel microstrip dual-band bandstop filter design by using inductively coupled Coplanar Waveguide fed (CPW) dual-mode resonators. Two nested dual-mode square loop resonators with perturbation elements on microstrip layer are constructed to produce first and second band. In the proposed filter design method, inductively coupled CPW rectangular rings are used to excite the degenerate modes of the resonators to obtain dual band bandstop filtering structure. Two perturbation elements are used to control the reflection zeros of the first and second band. So, two different filter responses are obtained by repositioning the reflection zeros. Charge distributions of the reflection zeros and poles of the structure are investigated for each stopband to exhibit the mode characteristic. Two filters are simulated with a full-wave EM simulator. Two filters are implemented and measured. Despite the production losses are high as a result of the CPW-fed structure, the measurement results are in good agreement with the simulation results.
采用电感耦合共面波导馈电(CPW)双模谐振器,设计了一种新型微带双带带阻滤波器。在微带层上构造了两个嵌套的带微扰元件的双模方环谐振器,以产生第一和第二波段。在提出的滤波器设计方法中,采用电感耦合的CPW矩形环激励谐振器的简并模,得到双带带阻滤波器结构。用两个微扰元件控制第一和第二波段的反射零点。因此,通过重新定位反射零点,可以得到两个不同的滤波器响应。研究了每个阻带的反射零点和反射极的电荷分布,以显示其模式特性。用全波电磁模拟器对两个滤波器进行了仿真。实现并测量了两个滤波器。尽管由于cpw馈电结构导致生产损失较大,但测量结果与仿真结果吻合较好。
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引用次数: 0
Classification of Breast Cancer Histopathological Images with Deep Transfer Learning Methods 基于深度迁移学习方法的乳腺癌组织病理学图像分类
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864846
Cemal Efe Tezcan, Berk Kiras, G. Bilgin
It is very important to have a high accuracy rate in detecting cancerous cells in histopathological images. Thanks to high-accuracy images, cancerous cells will be detected more sensitively, and there will be a chance for more accurate and early diagnosis. Thus, a very important preliminary step will be taken in the treatment of cancerous cells. In this study, classification performances were comparatively analyzed by applying various methods to four different cancer cell types (benign, normal, carcinoma in situ and invasive carcinoma). By using BACH and Bioimaging as datasets, the desired parts are tried to be obtained primarily by several image processing methods (pyramid mean shifting, line detection, spreading). After obtaining images of different sizes, their performances are examined by using VGG16, DenseNet121, ResNet50, MobileNetV2, InceptionResNetV2, CNN deep transfer learning methods.
在组织病理图像中检测癌细胞时,具有较高的准确率是非常重要的。由于高准确度的图像,癌细胞将被更灵敏地检测出来,并且有机会更准确和早期诊断。因此,一个非常重要的初步步骤将采取治疗癌细胞。本研究通过对四种不同类型的癌细胞(良性、正常、原位癌和浸润性癌)应用不同的方法进行分类性能对比分析。以BACH和Bioimaging作为数据集,主要通过几种图像处理方法(金字塔均值移位、直线检测、扩散)来获得所需的部分。在获得不同大小的图像后,使用VGG16、DenseNet121、ResNet50、MobileNetV2、InceptionResNetV2、CNN深度迁移学习方法对其性能进行检验。
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引用次数: 1
The Effect of SAR Speckle Removal in SAR-Optical Image Fusion SAR散斑去除在SAR-光学图像融合中的作用
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864861
Semih Gencay, Caner Özcan
Due to the imaging mechanism of Synthetic Aperture Radar (SAR) and the noise in the images, visual identification of objects in the scene is not as easy as in optical images. SAR images have limited color information and cannot reflect the spectral information of objects. Optical images, on the other hand, have rich spectral information. SAR-Optical image fusion is an important area of study so that SAR data can be easily evaluated by anyone, but it is difficult to find a matching SAR and optical image of the same scene. In order to overcome this difficulty, Sentinel-1 and Sentinel-2 datasets have been published and image fusion studies have been carried out with various methods. However, it has been observed that the effect of SAR noise removal before merging on image fusion methods has not been investigated. In the studies conducted to investigate this effect, five different fusion algorithms used in the literature were tested with twenty different image groups using different noise reduction ratios. The success of the fusion results obtained was compared with five different metrics that are widely used in the literature. The images and metric results obtained as a result of the tests showed that the removal of speckle noise in the SAR data has a positive effect on the fusion results.
由于合成孔径雷达(SAR)的成像机理和图像中的噪声,对场景中的目标进行视觉识别并不像在光学图像中那样容易。SAR图像的颜色信息有限,不能反映物体的光谱信息。另一方面,光学图像具有丰富的光谱信息。SAR-光学图像融合是一个重要的研究领域,它使任何人都可以方便地对SAR数据进行评估,但很难找到相同场景的匹配SAR和光学图像。为了克服这一困难,已经发表了Sentinel-1和Sentinel-2数据集,并使用各种方法进行了图像融合研究。然而,合并前去除SAR噪声对图像融合方法的影响尚未得到研究。在研究这种影响的研究中,使用了文献中使用的五种不同的融合算法,使用不同的降噪比对20种不同的图像组进行了测试。所获得的融合结果的成功与文献中广泛使用的五种不同指标进行了比较。实验得到的图像和度量结果表明,去除SAR数据中的散斑噪声对融合结果有积极的影响。
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引用次数: 0
Semantic Segmentation with the Mixup Data Augmentation Method 基于混合数据增强方法的语义分割
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864873
Saadet Aytaç Arpaci, Songül Varlı
The mixup data augmentation method is a method that creates new images via a linear function from multiple images. In this paper, it is examined whether the mixup data augmentation method improves the U-Net model’s segmentation capability. In this study, artifact segmentation was performed with histopathological images. The dataset used was examined into three different groups: (1) images that are produced through traditional data augmentation methods like flipping and rotation; (2) images that are produced through only the mixup method; and (3) images that are produced through both the traditional and mixup methods. According to the findings, the use of the mixup method in combination with the traditional data augmentation methods improved the model’s average Dice coefficient value for artifact segmentation of histopathological images.
混合数据增强方法是一种通过多个图像的线性函数创建新图像的方法。本文研究了混合数据增强方法是否能提高U-Net模型的分割能力。在本研究中,伪影分割与组织病理图像进行。使用的数据集被分为三组:(1)通过翻转和旋转等传统数据增强方法产生的图像;(2)仅通过混合方法生成的图像;(3)通过传统方法和混合方法生成的图像。根据研究结果,混合方法与传统的数据增强方法相结合,提高了模型的平均Dice系数值,用于组织病理图像的伪影分割。
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引用次数: 1
Texture Analysis by Deep Twin Networks for Paper Fraud Detection 基于深度孪生网络的纹理分析用于纸张欺诈检测
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864968
Ezgi Ekiz, Erol Sahin, F. Vural
This study proposes a method to distinguish fake documents from the originals using the textural structures of the papers they are printed on. The study is based on observations showing that paper textures are different and unique, just like fingerprint and iris tissue. This method, which captures the visually distinctive features of paper textures, can detect whether the documents of which the origin is suspected are fake or not. The proposed method can measure Type-2 error by training a Siamese network and thresholding the similarity results between two papers. Experimental results show that the proposed method has better distinguishing features than classical methods.
本研究提出了一种方法,以区分假文件从原件使用的纸张的纹理结构,他们被印在。这项研究是基于观察发现,纸的纹理是不同的,独特的,就像指纹和虹膜组织一样。该方法通过捕捉纸张纹理在视觉上的显著特征,可以检测出怀疑真伪的文件。该方法通过训练Siamese网络并对两篇论文的相似度结果进行阈值化来测量Type-2误差。实验结果表明,该方法比经典方法具有更好的识别特征。
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引用次数: 0
Outage Performance Analysis of Vertical Underwater VLC Links 垂直水下VLC链路的中断性能分析
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864736
M. Elamassie, M. Uysal
In this paper, we investigate the outage performance of vertical stratified underwater optical links in the presence of moderate/strong turbulence conditions. Specifically, we consider the cascaded Gamma-Gamma turbulence channel model and derive a closed-form expression for outage probability. We then use our derived expression to investigate the achievable diversity order (DO) and asymptotic diversity order (ADO). We further confirm our derivations through Monte Carlo simulations.
在本文中,我们研究了垂直分层水下光链路在中/强湍流条件下的中断性能。具体来说,我们考虑了级联的Gamma-Gamma湍流通道模型,并推导了停机概率的封闭表达式。然后,我们使用我们的推导表达式来研究可实现的多样性顺序(DO)和渐近多样性顺序(ADO)。我们通过蒙特卡罗模拟进一步证实了我们的推导。
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引用次数: 1
Using Word Embeddings in Detection of Temporal Expressions in Turkish Texts 用词嵌入技术检测土耳其语文本中的时态表达式
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864730
Ensar Emirali, M. Karsligil
Developing systems for automatically detection of date, time, duration and set expressions containing time information in texts is within the scope of Natural Language Processing research field. When studies for Turkish in the literature are reviewed, it is observed that only date and time expressions are included in the expressions detected by the models developed within the scope of Named Entity Recognition. There are studies to develop only rule-based systems on the subject of detection of temporal expressions in Turkish. Within the scope of this study, first Artificial Neural Networks based model for the detection of temporal expressions in Turkish texts is developed. The input of the developed model is word embeddings. In this study, the developed model success with using word embeddings built by different methods is measured on a dataset consisting of Turkish complaint texts collected from internet websites. By comparing the success of word embeddings on the detection of temporal expressions with the coverage percentages of word embeddings on the dataset, it is concluded that there is no correlation between them.
开发文本中日期、时间、持续时间和包含时间信息的集合表达式的自动检测系统,属于自然语言处理的研究领域。在回顾文献中对土耳其语的研究时,可以发现在命名实体识别范围内开发的模型检测到的表达式中只包含日期和时间表达式。有研究开发仅基于规则的系统来检测土耳其语的时间表达。在本研究的范围内,开发了第一个基于人工神经网络的模型,用于检测土耳其文本中的时间表达式。所开发模型的输入是词嵌入。在这项研究中,使用不同方法构建的词嵌入开发的模型的成功是在一个由从互联网网站收集的土耳其投诉文本组成的数据集上进行测量的。通过比较词嵌入在时间表达式检测上的成功率与词嵌入在数据集上的覆盖率,得出两者之间没有相关性的结论。
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引用次数: 1
Comparison of Different Intelligent Reflective Surface Designs in terms of Beam Properties at Sub-Terahertz Frequencies 基于亚太赫兹波束特性的不同智能反射表面设计比较
Pub Date : 2022-05-15 DOI: 10.1109/SIU55565.2022.9864679
Ada Irem Pekdemir, Ö. Özdemir, G. Kurt
Terahertz (THz) communication is one of the remarkable topics in the field of communication. Terahertz communication, which is one of the promising topics in meeting the rapidly increasing number of devices and the need for data speed and channel capacity, aims to increase the wireless communication frequency band up to terahertz level. When the terahertz frequency is used the wavelength decreases significantly, which causes electromagnetic waves to be more affected by the channel effects. There must be a clear line of sight (LOS) between the transmitter and the receiver in THz communication systems and the electromagnetic wave sent must be highly directive. The use of intelligent reflective surfaces in the terahertz band can provide advantages in the reflected wave being more directive. In this study, different Intelligent Reflective Surface designs in the literature are implemented and a performance comparison is presented in terms of beam characteristics.
太赫兹(THz)通信是通信领域中引人注目的话题之一。太赫兹通信旨在将无线通信频段提高到太赫兹水平,是满足设备数量快速增长、对数据速度和信道容量需求的一个有前途的课题。当使用太赫兹频率时,波长明显减少,这导致电磁波更受信道效应的影响。在太赫兹通信系统中,发射器和接收器之间必须有清晰的视线(LOS),并且发射的电磁波必须具有高度的指导性。在太赫兹波段使用智能反射面可以提供反射波更有方向性的优势。在本研究中,实现了文献中不同的智能反射表面设计,并在光束特性方面进行了性能比较。
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引用次数: 0
期刊
2022 30th Signal Processing and Communications Applications Conference (SIU)
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