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利用并行神经网络进行航天软件质量评价 被引量:5
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作者 宋元章 沈湘衡 李洪雨 《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2020年第4期595-600,共6页
针对航天软件质量评价准确率不高、受主观因素影响较大、可扩展性较弱等问题,本文结合神经网络和DS证据理论,提出了一种利用并行神经网络进行质量评价的方法。将选取的软件质量评价指标数据分别输入到多个相互独立的并行的神经网络中以... 针对航天软件质量评价准确率不高、受主观因素影响较大、可扩展性较弱等问题,本文结合神经网络和DS证据理论,提出了一种利用并行神经网络进行质量评价的方法。将选取的软件质量评价指标数据分别输入到多个相互独立的并行的神经网络中以获得多个初步评价结果,利用DS证据理论对各初步评价结果进行融合获得最终评价结果。以某航天相机系统为实验对象,测试本文方法的有效性,实验结果表明:评价准确率可以达到95.23%,训练时间为576.00 ms,评价处理时间为77.50 ms。本文方法评价准确率较高、训练时间和评价时间较短,满足对航天软件进行质量评价的要求。 展开更多
关键词 航天 软件 质量评价 并行神经网络 DS证据理论 决策准则 交叉验证法
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Detection of P2P botnet based on network behavior features and Dezert-Smarandache theory 被引量:1
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作者 song yuanzhang Chen Yuan +2 位作者 Wang Junjie Wang Anbang Li Hongyu 《Journal of Southeast University(English Edition)》 EI CAS 2018年第2期191-198,共8页
In order to improve the accuracy of detecting the new P2P(peer-to-peer)botnet,a novel P2P botnet detection method based on the network behavior features and Dezert-Smarandache theory is proposed.It focuses on the netw... In order to improve the accuracy of detecting the new P2P(peer-to-peer)botnet,a novel P2P botnet detection method based on the network behavior features and Dezert-Smarandache theory is proposed.It focuses on the network behavior features,which are the essential abnormal features of the P2P botnet and do not change with the network topology,the network protocol or the network attack type launched by the P2P botnet.First,the network behavior features are accurately described by the local singularity and the information entropy theory.Then,two detection results are acquired by using the Kalman filter to detect the anomalies of the above two features.Finally,the above two detection results are fused with the Dezert-Smarandache theory to obtain the final detection results.The experimental results demonstrate that the proposed method can effectively detect the new P2P botnet and that it considerably outperforms other methods at a lower degree of false negative rate and false positive rate,and the false negative rate and the false positive rate can reach 0.09 and 0.12,respectively. 展开更多
关键词 P2P(peer-to-peer)botnet local singularity ENTROPY Kalman filter Dezert-Smarandache theory
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Detecting P2P Botnet by Analyzing Macroscopic Characteristics with Fractal and Information Fusion
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作者 song yuanzhang 《China Communications》 SCIE CSCD 2015年第2期107-117,共11页
Towards the problems of existing detection methods,a novel real-time detection method(DMFIF) based on fractal and information fusion is proposed.It focuses on the intrinsic macroscopic characteristics of network,which... Towards the problems of existing detection methods,a novel real-time detection method(DMFIF) based on fractal and information fusion is proposed.It focuses on the intrinsic macroscopic characteristics of network,which reflect not the "unique" abnormalities of P2P botnets but the "common" abnormalities of them.It regards network traffic as the signal,and synthetically considers the macroscopic characteristics of network under different time scales with the fractal theory,including the self-similarity and the local singularity,which don't vary with the topology structures,the protocols and the attack types of P2P botnet.At first detect traffic abnormalities of the above characteristics with the nonparametric CUSUM algorithm,and achieve the final result by fusing the above detection results with the Dempster-Shafer evidence theory.Moreover,the side effect on detecting P2P botnet which web applications generated is considered.The experiments show that DMFIF can detect P2P botnet with a higher degree of precision. 展开更多
关键词 P2P botnet fractal information fusion CUSUM algorithm
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