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2020 28th Signal Processing and Communications Applications Conference (SIU)最新文献

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An Overview of Machine Learning Based Approaches in DDoS Detection 基于机器学习的DDoS检测方法综述
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302121
Süreyya Atasever, Ilker Özçelik, Ş. Sağiroğlu
Many detection approaches have been proposed to address growing threat of Distributed Denial of Service (DDoS) attacks on the Internet. The attack detection is the initial step in most of the mitigation systems. This study examined the methods used to detect DDoS attacks with the focus on learning based approaches. These approaches were compared based on their efficiency, operating load and scalability. Finally, it is discussed in details.
许多检测方法已经提出,以解决日益增长的威胁分布式拒绝服务(DDoS)攻击的互联网。在大多数缓解系统中,攻击检测是第一步。本研究考察了用于检测DDoS攻击的方法,重点是基于学习的方法。从效率、运行负荷和可扩展性等方面对这些方法进行了比较。最后,对其进行了详细的讨论。
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引用次数: 1
Multi-Image Super Resolution in Multi-Contrast MRI 多对比MRI的多图像超分辨率
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302325
Mahmut Yurt, Tolga Cukurmm
Özetçe —Yüksek çözünürlüklü manyetik rezonans görüntülerinin (MRG) farklı kontrastlar altında edinimi klinik tanıda gerekli olan teşhis bilgisini artırır. Ancak, artan gürültü oranı, uzun tarama süreleri ve donanım maliyetlerinden ötürü yüksek çözünürlüklü görüntülerin edinimi pratikte mümkün olmayabilir. Bu durumlarda, düşük çözünürlüklü görüntülerden yüksek çözünürlüklü görüntülerin üretilebilmesi alternatif bir çözüm olabilir. Yaygın yöntemler tek bir görüntünün süper çözünürlüğünü yapar. Ancak, çok kontrastlı MRG’de, tek bir kontrastın düşük çözünürlüklü görüntüsü başarılı bir netleştirme için gerekli ön bilgiyi içermez. Gerekli bilgiyi zenginleştirebilmek için, farklı kontrastlardaki tamamlayıcı ön bilgiler kullanılabilir. Bu sebeple, bu çalışmada birden çok kontrasta ait görüntüleri eşzamanlı olarak netleştiren bir çoklu kontrast MRG süper çözünürlük yöntemi önerilmiştir. Önerilen yöntem yüksek frekans detaylarını daha iyi kurtararak olabildiğince gerçekçi hedef görüntüler üretebilen koşullu çekişmeli üretici ağlara dayanmaktadır. Çoklu kontrast MR görüntüleri içeren veri setinde yapılan sayısal ve görsel değerlendirmeler, önerilen yöntemin alternatif tekli görüntü MRG süper çözünürlük yönteminden daha üstün performans gösterdiğini ortaya koymuştur.
摘要--在不同对比度下获取高分辨率磁共振图像(MRI)可增加临床诊断所需的诊断信息。然而,由于噪声增加、扫描时间长和硬件成本等原因,获取高分辨率图像在实际中可能并不可行。在这种情况下,从低分辨率图像生成高分辨率图像可能是一种替代解决方案。常见的方法是对单幅图像进行超分辨率处理。然而,在多对比度磁共振成像中,单一对比度的低分辨率图像并不包含成功锐化所需的先验信息。不同对比度的互补先验信息可用于丰富必要的信息。因此,本研究提出了一种同时锐化多种对比度图像的多对比度磁共振成像超分辨率方法。该方法基于条件对抗生成网络,能通过更好地恢复高频细节来生成尽可能逼真的目标图像。在多对比度磁共振成像数据集上进行的数值和视觉评估表明,所提出的方法优于其他单图像磁共振成像超分辨率方法。
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引用次数: 1
Orthogonal Frequency Division Multiplexing with Codebook Index Modulation 具有码本索引调制的正交频分复用
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302305
E. Arslan, A. T. Dogukan, E. Başar
Ultra-reliable and low-latency communications (URLLC) partake a major role in future communication systems. A possible strong candidate for future URLLC networks is sparse vector coding (SVC), which enables a superior performance in terms of bit error rate (BER). In SVC, virtual digital domain (VDD) and compressed sensing (CS) algorithms are used to encode and decode information. In this paper, orthogonal frequency division multiplexing (OFDM)-based a novel system called orthogonal frequency division multiplexing with codebook index modulation (OFDM-CIM) and which can meet the needs of URLLC systems has been proposed. In OFDM-CIM, information bits are transmitted via both active subcarrier indices and codebook indices. As a result of computer simulations, OFDMCIM is presented as a strong candidate for next generation communication systems.
超可靠和低延迟通信(URLLC)在未来的通信系统中扮演着重要的角色。稀疏矢量编码(SVC)可能是未来URLLC网络的有力候选,它在误码率(BER)方面具有优越的性能。在SVC中,采用虚拟数字域(VDD)和压缩感知(CS)算法对信息进行编码和解码。本文提出了一种基于正交频分复用(OFDM)的新型系统,即码本索引调制正交频分复用(OFDM- cim),该系统能够满足URLLC系统的需求。在OFDM-CIM中,信息位通过有源子载波索引和码本索引传输。计算机仿真结果表明,ofdcim是下一代通信系统的有力候选。
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引用次数: 1
Heart Disease Prediction by Using Machine Learning Algorithms 利用机器学习算法预测心脏病
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302468
Alperen Erdoğan, S. Guney
Nowadays, one of the most important illness is heart disease which cause of mostly patients dead. Medical diagnosis of heart diseases is very difficult. While heart diseases are diagnosed medically, they can be confused with other diseases that show same symptoms such as chest pain, shortness of breath, palpitations and nausea. This makes it difficult to diagnose heart diseases medically. In this study, the presence of heart diseases was determined by using machine learning algorithms. In this study, the data obtained from the patients were weighted according to their effects on the success rate. In this study, a method is proposed for determine weight coefficient. According to proposed method's results, 86,90% success was achieved with 13 different features obtained from the patients.
如今,最重要的疾病之一是心脏病,它导致大多数患者死亡。心脏病的医学诊断是非常困难的。虽然心脏病是医学诊断,但它们可能与其他疾病混淆,这些疾病表现出相同的症状,如胸痛、呼吸短促、心悸和恶心。这使得从医学上诊断心脏病变得困难。在这项研究中,心脏病的存在是通过使用机器学习算法来确定的。在本研究中,根据患者对成功率的影响对数据进行加权。本文提出了一种确定权重系数的方法。根据该方法的结果,从患者身上获得13个不同的特征,成功率达到86.90%。
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引用次数: 1
An On-chip Switch Architecture for Hardware Accelerated Cloud Computing Systems 用于硬件加速云计算系统的片上交换架构
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302370
Fatih Yazıcı, Ayhan Sefa Yıldız, Alper Yazar, E. G. Schmidt
In this paper, we propose a scalable on-chip packet switch architecture for hardware accelerated cloud computing systems. Our proposed switch architecture is implemented on the FPGA and interconnects reconfigurable regions, 40 Gbps Ethernet interfaces and a PCIe interface. The switch fabric operates at line speed to achieve scalability. We propose a new algorithm that grants access to the fabric according to the allocated prioritization to input-output port pairs. The switch is implemented on Xilinx Zynq 7000-SoC and can work at 40 Gbps rate. Our simulation results show that our proposed algorithm achieves desired prioritization without degrading the throughput. Keywords—cloud computing, on-chip switch, switch fabric arbitration.
在本文中,我们提出了一个可扩展的片上分组交换架构,用于硬件加速云计算系统。我们提出的交换机架构在FPGA上实现,并将可重构区域,40 Gbps以太网接口和PCIe接口互连。交换结构以线速度运行,以实现可扩展性。我们提出了一种新的算法,根据分配的优先级授予对输入输出端口对的访问权限。该交换机在赛灵思Zynq 7000-SoC上实现,可以以40 Gbps的速率工作。仿真结果表明,本文提出的算法在不降低吞吐量的情况下达到了期望的优先级。关键词:云计算,片上交换机,交换机结构仲裁。
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引用次数: 0
Classification of Brain Tumors using Convolutional Neural Network from MR Images 基于卷积神经网络的脑肿瘤磁共振图像分类
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302090
Cahfer Güngen, Özlem Polat, R. Karakis
The classification of brain tumors has great importance in medical applications that benefit from computer-assisted diagnosis. Misdiagnosis of brain tumor types, both prevents the patient's response to treatment effectively and reduce the chance of survival. This study proposes a solution for the classification of brain tumors using MR images. The most common brain tumors, glioma, meningioma and pituitary, are detected using convolutional neural networks. The convolutional network is trained and tested on an accessible Figshare dataset containing 3064 MR images using four different optimizers. AUC, sensitivity, specificity and accuracy are used as performance measure. The proposed method is comparable to the literature and classifies brain tumors with an average accuracy of 96.84% and a maximum accuracy of 97.75%.
脑肿瘤的分类在受益于计算机辅助诊断的医学应用中具有重要意义。对脑肿瘤类型的误诊,既阻碍了患者对治疗的有效反应,又降低了患者的生存机会。本研究提出了一种利用磁共振图像对脑肿瘤进行分类的解决方案。最常见的脑肿瘤,神经胶质瘤,脑膜瘤和脑垂体,是使用卷积神经网络检测的。卷积网络在包含3064张MR图像的可访问Figshare数据集上使用四种不同的优化器进行训练和测试。AUC、灵敏度、特异性和准确性作为性能指标。该方法与文献相媲美,对脑肿瘤的分类平均准确率为96.84%,最高准确率为97.75%。
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引用次数: 3
Skin Lesion Classification With Deep CNN Ensembles 基于深度CNN集合的皮肤病变分类
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302125
Sara Atito Ali Ahmed, B. Yanikoglu, Özgü Göksu, E. Aptoula
Early detection of skin cancer is vital when treatment is most likely to be successful. However, diagnosis of skin lesions is a very challenging task due to the similarities between lesions in terms of appearance, location, color, and size. We present a deep learning method for skin lesion classification by fusing and fine-tuning three pre-trained deep learning architectures (Xception, Inception-ResNet-V2, and NasNetLarge) using training images provided by ISIC2019 organizers. Additionally, the outliers and the heavy class imbalance are addressed to further enhance the classification of the lesion. The experimental results show that the proposed framework obtained promising results that are comparable with the ISIC2019 challenge leader board.
当治疗最有可能成功时,早期发现皮肤癌是至关重要的。然而,皮肤病变的诊断是一项非常具有挑战性的任务,因为病变在外观,位置,颜色和大小方面相似。我们使用ISIC2019组织者提供的训练图像,通过融合和微调三个预训练的深度学习架构(Xception, Inception-ResNet-V2和NasNetLarge),提出了一种皮肤病变分类的深度学习方法。此外,对异常值和严重的分类不平衡进行了处理,进一步增强了病变的分类。实验结果表明,该框架取得了与ISIC2019挑战排行榜相当的良好效果。
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引用次数: 7
Segmentation networks reinforced with attribute profiles for large scale land-cover map production 基于属性剖面的大比例尺土地覆盖图分割网络
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302089
E. Aptoula, F. Kahraman, Gökhan Özbulak, S. Aydemir, M. Imamoglu, A. Sofu, Ismail Yilmaz
Segmentation networks have proven to be popular tools for large scale pixel-wise remote sensing image classification as they can deal with wide spatial areas efficiently, as opposed to convolutional neural networks trained with pixel centered patches. However, they are often criticized in terms of spatial consistency. As such, they have received various extensions through the last few years, in the form of dilated convolutions and skip connections and more. In this paper, we address the same issue by feeding attribute filtered images, that contain inherently a multiscale hierarchical representation of the underlying image, as input to a segmentation network, in an effort to both accelerate convergence and render easier the feature learning task of the bottom layers. We validate our approach through the production of land-use and land-cover maps for a large area of Turkey using Sentinel 2 multispectral images and ground truth from the Copernicus Land Monitoring Service.
与使用以像素为中心的补丁训练的卷积神经网络相比,分割网络可以有效地处理宽空间区域,已被证明是大规模逐像素遥感图像分类的流行工具。然而,它们在空间一致性方面经常受到批评。因此,它们在过去几年中得到了各种扩展,以扩展卷积和跳过连接等形式。在本文中,我们通过提供属性过滤图像来解决相同的问题,这些图像本身包含底层图像的多尺度分层表示,作为分割网络的输入,以加速收敛并使底层的特征学习任务变得更容易。我们通过使用Sentinel 2多光谱图像和来自哥白尼土地监测服务的地面真相,为土耳其的大片地区制作土地利用和土地覆盖地图,验证了我们的方法。
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引用次数: 1
Optical Single Carrier Frequency Domain Channel Equalizer for Visible Light Communication 可见光单载波频域信道均衡器
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302357
Serhat Sert, Ahmet Halit Akilli, Ozcan Bilbay, C. Cengiz, A. Ozen
Optical radio communication systems and its application, visible light communication (VLC), provide very important technical and operational advantages in applications. In this study, it is recommended to use optical single carrier frequency domain channel equalizer (OSC-FDCE) to repair corrupted data of single carrier VLC systems in multipath optical channel environment. Computer simulation studies are performed to test the performance of OSC-FDCE method in 5, 6 and 10 branch optical channel environment over the Bit Error Rate (BER) performance criterion. From the obtained simulation results, it is seen that OSC-FDCE method has better performance than VLC-OFDM-FDE method.
光无线电通信系统及其应用——可见光通信(VLC)在应用中提供了非常重要的技术和操作优势。在本研究中,建议使用光单载波频域信道均衡器(OSC-FDCE)来修复多径光信道环境下单载波VLC系统的损坏数据。在误码率(BER)性能标准下,对oscc - fdce方法在5、6和10支路光信道环境下的性能进行了计算机仿真研究。仿真结果表明,OSC-FDCE方法比VLC-OFDM-FDE方法具有更好的性能。
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引用次数: 0
Learning Parameters of ptSTL Formulas with Backpropagation 带反向传播的ptSTL公式的学习参数
Pub Date : 2020-10-05 DOI: 10.1109/SIU49456.2020.9302093
Ahmet Ketenci, Ebru Aydin Gol
In this paper, a backpropagation based algorithm is presented to learn parameters of past time Signal Temporal Logic (ptSTL) formulas. A differentiable weight matrix over the parameter values and a loss function based on the mismatch value of the corresponding formulas over the labeled dataset are used in the algorithm. Analysis over a sample dataset shows that the algorithm solves the ptSTL parameter synthesis problem in an efficient way.
本文提出了一种基于反向传播的学习过去时间信号时序逻辑(ptSTL)公式参数的算法。该算法使用参数值上的可微权矩阵和基于相应公式在标记数据集上的不匹配值的损失函数。对一个样本数据集的分析表明,该算法有效地解决了ptSTL参数的综合问题。
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引用次数: 1
期刊
2020 28th Signal Processing and Communications Applications Conference (SIU)
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