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In today's production-grade cloud datacenter, cloud service providers do not offer any bandwidth guarantees between VMs, which results in unpredictable performance of tenants' applications. To address this issue, we present SpongeNet, a solution that provides bandwidth guarantees for tenants with a novel network abstraction model and a two-phase VM placement algorithm. Prior solutions have significant...
Cloud-based big data platforms are being widely adopted in industry, due to their advantages of facilitating the implementation of big data processing and enabling elastic service framework. Alongside with the widespread adoption of cloud-based MapReduce frameworks, a series of solutions have been proposed to improve the performance of big data services over cloud. Majorities of the existing studies...
In this paper, the leader-following consensus problem of multi-agent is studied. An adaptive design method is presented for multi-agent systems with non-identical unknown nonlinear dynamics, and for a leader to be followed that is also nonlinear and unknown. By parameterizations of unknown nonlinear dynamics of all agents, a purely decentralized adaptive consensus algorithm is proposed in networks...
In this paper, the leader-following consensus problem of multi-agent is studied. A decentralized adaptive design method is presented for multi-agent systems with non-identical unknown nonlinear dynamics, and for a leader to be followed that is also nonlinear and unknown. By parameterizations of unknown nonlinear dynamics of all agents, a decentralized adaptive consensus algorithm is proposed for networks...
Due to the Internet¡¦s scalability and connectivity, enterprises and organizations increasingly rely upon it to provide services for customers. However, attackers intelligently attack enterprises and organizations through continuous vulnerability exploitation and advanced malware. Recently, assailants have applied the characteristics of fast propagation and epidemic attack infection to launch more...
In this paper, average consensus problem of multiagent systems with switching topology and multiple time-varying delays are investigated in undirected networks. Based on Lyapunov stability theory combined with linear matrix inequalities (LMIs) techniques, some novel forms in terms of LMIs are obtained via taking relationship among the terms in the Newton-Leibniz formula into account. Since some free...
This paper is devoted to the study of multi-agent consensus with a time-varying reference state in directed networks with both switching topology and time-varying delay. Stability analysis is performed based on a proposed Lyapunov-Krasovskii function. Sufficient conditions based on linear matrix inequalities (LMIs) are given to guarantee multi-agent consensus on a time-vary reference state under arbitrary...
This paper is devoted to the study of multi-agent consensus with a time-varying reference state in directed networks with both switching topology and constant time delay. Stability analysis is performed based on a proposed Lyapunov-Krasovskii function. Sufficient conditions based on linear matrix inequalities (LMIs) are given to guarantee multi-agent consensus on a time-vary reference state under...
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