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1.
网络入侵检测一直是网络安全领域中的研究热点,针对分类器参数优化难题,为了提高网络入侵检测准确性,提出一种改进粒子群算法和支持向量机相融合的网络入侵检测模型(IPSO-SVM).首先将网络入侵检测率作为目标函数,支持向量机参数作为约束条件建立数学模型,然后采用改进粒子群算法找到支持向量机参数,最后采用支持向量机作为分类器建立入侵检测模型,并在Matlab 2012平台上采用KDD 999数据进行验证性实验.结果表明,IPSO-SVM解决了分类器参数优化难题,获得更优的网络入侵分类器,提高网络入侵检测率,虚警率和漏报率大幅度下降.  相似文献   

2.
为了提高网络入侵检测的正确率,提出一种基于组合算法选择特征的网络入侵检测模型(GA-PSO)。首先建立网络入侵特征选择的数学模型,采用遗传算法迅速找到网络入侵的特征子集,然后采用粒子群算法进一步选择,找到最优特征子集,最后采用极限学习机建立网络入侵检测分类器,并采用KDD CUP 99数据集进行仿真测试。结果表明,GAPSO不仅提高了入侵检测速度,而且可以提高网络入侵检测的正确率。  相似文献   

3.
笔者针对网络特征选择问题,提出一种鲶鱼粒子群算法选择特征的支持向量机网络入侵检测(EPSO-SVM)。首先将"鲶鱼效应"因子引入粒子群优化算法,将网络特征子集编码成粒子位置串,其次将入侵检测率作为特征子集选择目标函数,通过鲶鱼粒子群找到最优特征子集,最后支持向量机根据最优特征子集构建网络入侵分类器,在KDDCup99数据集上进行仿真测试。结果表明,EPSO-SVM不仅能提高网络入侵检测率和检测速度,而且适用于现实高速网络应用环境。  相似文献   

4.
为了提高网络入侵检测率,提出一种协同量子粒子群算法和最小二乘支持向量机的网络入侵检测模型(CQPSO-LSSVM)。将网络特征子集编码成量子粒子位置,入侵检测正确率作为特征子集优劣的评价标准,采用协同量子粒子群算法找到最优特征子集,采用最小二乘支持向量机建立网络入侵检测模型,并采用KDD CUP 99数据集进行仿真测试。结果表明,CQPSO-LSSVM获得了比其他入侵检测模型更高的检测效率和检测率。  相似文献   

5.
为了提高网络入侵的检测正确率,针对网络入侵检测中特征选择问题,将二值粒子群优化算法(BPSO)用于网络入侵特征选择,结合支持向量机(SVM)提出了一种基于BPSO-SVM的网络入侵检测算法。该算法将网络入侵检测转化为多分类问题,采用wrapper特征选择模型,以SVM为分类器,通过样本训练分类器,根据分类结果,利用BPSO算法在特征空间中进行全局搜索,选择最优特征集进行分类。实验结果表明,BPSO-SVM有效降低了特征维数,显著提高了网络入侵的检测正确率,还大大缩短了检测时间。  相似文献   

6.
KNN-IPSO选择特征的网络入侵检测   总被引:1,自引:0,他引:1  
为了提高网络入侵检测的正确率,提出一种基于KNN-IPSO选择特征的网络入侵检测模型(KNN-IPSO)。首先采用K近邻算法消除原始网络数据中的冗余特征,并将其作为粒子群算法的初始解,然后采用粒子群算法找到最优特征子集,并对粒子的惯性权重进行自适应调整和种群进行混沌操作,帮助种群跳出局部最优,最后采用KDD CUP 99数据集对KNN-IPSO的性能进行测试。结果表明,KNN-IPSO消除了冗余特征,降低了分类器的输入维数,有效提高了入侵检测正确率和检测速度。  相似文献   

7.
针对传统入侵检测系统检测速度慢和误检率高的问题,将免疫原理、移动Agent技术和量子粒子群优化算法相结合,提出了基于免疫Agent和粒子群优化算法的入侵检测模型。介绍了系统模型与体系结构,并对系统性能进行仿真实验。实验结果对比表明,系统能提高传统入侵检测系统的检测速度和降低误检率。  相似文献   

8.
基于EPSO-RVM的网络入侵检测模型   总被引:1,自引:0,他引:1  
为了提高网络入侵检测的正确率,提出一种精英选择策略粒子群算法(EPSO)优化相关向量机(RVM)的网络入侵检测模型(EPSO-RVM)。将相关向量机的参数编码成粒子,将入侵检测正确率作为粒子群搜索的目标,通过粒子群算法对参数优化问题进行求解,并引入精英选择策略增强粒子群算法的全局搜索能力,根据最优参数建立基于RVM的入侵检测模型,采用KDD99数据集对其性能测试,结果表明,相对于对比模型,EPSO-RVM较好地解决了相关向量机参数优化难题,提高了网络入侵检测的正确率。  相似文献   

9.
为了较好克服量子粒子群算法存在早熟收敛的缺点,在分析算法参数和流程的基础上,提出了一种带变异操作的改进量子粒子群优化算法。针对传统BP算法易于陷入局部极小的不足,将改进的算法应用到BP神经网络的学习过程中,修正BP网络的权值和阈值,提高其收敛性能。并将优化的BP神经网络模型应用于入侵检测中,用标准入侵检测数据对基于不同算法的BP网络进行仿真实验比较。实验结果表明,改进后的BP算法迭代次数少,收敛速度有所提高,在一定程度上提高了入侵检测率。  相似文献   

10.
何伟山  秦亮曦 《微机发展》2013,(12):147-150
为了较好克服量子粒子群算法存在早熟收敛的缺点,在分析算法参数和流程的基础上,提出了一种带变异操作的改进量子粒子群优化算法。针对传统BP算法易于陷入局部极小的不足,将改进的算法应用到BP神经网络的学习过程中,修正BP网络的权值和阈值,提高其收敛性能。并将优化的BP神经网络模型应用于入侵检测中,用标准入侵检测数据对基于不同算法的BP网络进行仿真实验比较。实验结果表明,改进后的BP算法迭代次数少,收敛速度有所提高,在一定程度上提高了入侵检测率。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

18.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

19.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

20.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

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