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MDEV Model:A Novel Ensemble-Based Transfer Learning Approach for Pneumonia Classification Using CXR Images
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作者 Mehwish Shaikh Isma Farah Siddiqui +3 位作者 Qasim Arain Jahwan Koo Mukhtiar Ali Unar Nawab Muhammad Faseeh Qureshi 《Computer Systems Science & Engineering》 SCIE EI 2023年第7期287-302,共16页
Pneumonia is a dangerous respiratory disease due to which breathing becomes incredibly difficult and painful;thus,catching it early is crucial.Medical physicians’time is limited in outdoor situations due to many pati... Pneumonia is a dangerous respiratory disease due to which breathing becomes incredibly difficult and painful;thus,catching it early is crucial.Medical physicians’time is limited in outdoor situations due to many patients;therefore,automated systems can be a rescue.The input images from the X-ray equipment are also highly unpredictable due to variances in radiologists’experience.Therefore,radiologists require an automated system that can swiftly and accurately detect pneumonic lungs from chest x-rays.In medical classifications,deep convolution neural networks are commonly used.This research aims to use deep pretrained transfer learning models to accurately categorize CXR images into binary classes,i.e.,Normal and Pneumonia.The MDEV is a proposed novel ensemble approach that concatenates four heterogeneous transfer learning models:Mobile-Net,DenseNet-201,EfficientNet-B0,and VGG-16,which have been finetuned and trained on 5,856 CXR images.The evaluation matrices used in this research to contrast different deep transfer learning architectures include precision,accuracy,recall,AUC-roc,and f1-score.The model effectively decreases training loss while increasing accuracy.The findings conclude that the proposed MDEV model outperformed cutting-edge deep transfer learning models and obtains an overall precision of 92.26%,an accuracy of 92.15%,a recall of 90.90%,an auc-roc score of 90.9%,and f-score of 91.49%with minimal data pre-processing,data augmentation,finetuning and hyperparameter adjustment in classifying Normal and Pneumonia chests. 展开更多
关键词 Deep transfer learning convolution neural network image processing computer vision ensemble learning pneumonia classification mdev model
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基于BGP/MPLS VPN的VRF配置设计与仿真 被引量:5
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作者 陈丰琴 窦军 张丹 《成都信息工程大学学报》 2020年第4期378-381,共4页
BCP/MPLS VPN是ISP骨干网的重要模型,是通信领域备受关注的研究对象。针对该模型中PE节点内VRF转发技术及路由部署进行研究,首先介绍BGP/MPLS VPN模型及VRF技术原理;然后,基于Linux 4.14内核交换机上L3mdev机制设计VRF配置;最后,通过仿... BCP/MPLS VPN是ISP骨干网的重要模型,是通信领域备受关注的研究对象。针对该模型中PE节点内VRF转发技术及路由部署进行研究,首先介绍BGP/MPLS VPN模型及VRF技术原理;然后,基于Linux 4.14内核交换机上L3mdev机制设计VRF配置;最后,通过仿真测试VRF上部署OSPF协议,验证其有效的隔离性。 展开更多
关键词 BGP/MPLS VPN Linux 4.14内核 L3mdev VRF OSPF
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适合于SDH设备的从钟的定时特性分析 被引量:2
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作者 吴三明 毛谦 《光通信研究》 1996年第3期3-9,共7页
适合于SDH设备的从钟,是SDH网络所特有的从时钟。文中对G.813从钟的定时特性作了详尽分析。首先,介绍了定时信号的数学模型,然后给出了表征频率和时间稳定性参数的定义和性质,并对其进行了时域和频域分析。在此基础上建... 适合于SDH设备的从钟,是SDH网络所特有的从时钟。文中对G.813从钟的定时特性作了详尽分析。首先,介绍了定时信号的数学模型,然后给出了表征频率和时间稳定性参数的定义和性质,并对其进行了时域和频域分析。在此基础上建立了G.813从钟的噪声模型。最后对ITU-T建议G.813给出的定时特性规范中所存在的若干问题进行了讨论,提出了自己的见解。 展开更多
关键词 G.813时钟 SDH 同步 数据通信
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