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Network security situational awareness(NSSA) has been a hot research spot in the network security domain. In this paper, a quantification method for NSSA based on conditional random fields(CRFs) was proposed. The data of network attacks from intrusion detection system (IDS), the hosts' vulnerabilities and the hosts' states were firstly combined as the network security factors. And then the network...
With the continuous expansion of the network size, some networks gradually present the characteristics of social networks, especially, scale-free networks. At present, some theoretical studies of scale-free networks are mainly based on simulated platforms. Based on this, the question that how we fast simulate a network model possessing scale-free effects and presenting related characteristics of realistic...
This paper quantifies the risk-return spectrum of the FSU' oil economies, which are of high potential as China's major crude oil-importing sources, and explores the influence of introducing the relative risk weights on the changes of the risk-return spectrum. The results show that when the risk preference of decision-makers is considered, the risk-return spectrum of the FSU turns into the low-risk...
Motivated by various network improvement models, we study the problem to add some new edges to satisfy the increasing information demand and keep the underlying structure of the networks unchanged. In this paper we propose the general network expansion problem on the spanning tree in graphs (GNEST), then we present the polynomial equivalence between the GNEST problem and the constrained minimum spanning...
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