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面向实时业务的网络安全态势评估 被引量:2
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作者 刘一博 殷肖川 方研 《计算机应用与软件》 CSCD 北大核心 2014年第9期304-308,共5页
网络安全事件的多样性和复杂性使得传统方法难以对网络安全态势作出实时动态的评估。鉴于此,提出一种面向网络实时业务的网络安全态势评估方法。尝试以网络实时业务为切入点来降低评估复杂度,实时动态地评估网络安全态势。基本思路是采... 网络安全事件的多样性和复杂性使得传统方法难以对网络安全态势作出实时动态的评估。鉴于此,提出一种面向网络实时业务的网络安全态势评估方法。尝试以网络实时业务为切入点来降低评估复杂度,实时动态地评估网络安全态势。基本思路是采用层次化方法建立实时业务风险模型,采用攻击树方法建立攻击威胁模型,将这两个模型作为评估的数据支撑;对D-S证据理论合成公式进行改进;利用改进后的D-S证据理论实现上述两个模型的关联,进而得出实时的评估结果。最后通过一个测试实验对评估方法进行验证与分析。 展开更多
关键词 网络安全 态势评估 业务风险模型 威胁模型 D-S理论
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Dynamic Statistical Models for Corporate Failure Prediction in Italy 被引量:1
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作者 Alessandra Amendola Marialuisa Restaino Luca Sensini 《Journal of Modern Accounting and Auditing》 2012年第8期1214-1224,共11页
Different models have been proposed in corporate finance literature for predicting the risk of firm's bankruptcy and insolvency. In spite of the large amount of empirical findings, significant issues are still unsolv... Different models have been proposed in corporate finance literature for predicting the risk of firm's bankruptcy and insolvency. In spite of the large amount of empirical findings, significant issues are still unsolved. In this paper, the authors developed dynamic statistical models for bankruptcy prediction of Italian firms in the industrial sector by using financial indicators. The model specification has been obtained via different variable selection techniques, and the predictive accuracy of the proposed default risk models has been evaluated at various horizons by means of different accuracy measures. The reached results give evidence that dynamic models have a better performance in any of the considered scenarios. 展开更多
关键词 default risk financial ratios variable selection logistic regression hazard model
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