基于節(jié)點(diǎn)冗余容量動(dòng)態(tài)控制的復(fù)雜網(wǎng)絡(luò)魯棒性研究
doi: 10.11999/JEIT200185
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戰(zhàn)略支援部隊(duì)信息工程大學(xué) 鄭州 450000
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2.
網(wǎng)絡(luò)通信與安全紫金山實(shí)驗(yàn)室 南京 210000
Research on the Robustness of Complex Networks Based on Dynamic Control of Node Redundancy Capacity
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PLA Strategic Support Force Information Engineering University, Zhengzhou 450000, China
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Network Communication and Security Purple Mountain Laboratory, Nanjing 210000, China
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摘要: 針對(duì)傳統(tǒng)級(jí)聯(lián)失效模型中冗余參數(shù)固定不變的問(wèn)題,該文綜合考慮節(jié)點(diǎn)受攻擊程度不同和失效過(guò)程中網(wǎng)絡(luò)拓?fù)涞膭?dòng)態(tài)變化,建立了基于節(jié)點(diǎn)冗余容量動(dòng)態(tài)控制(DRC)的級(jí)聯(lián)失效模型。通過(guò)定義網(wǎng)絡(luò)相變臨界因子
$\theta $ 衡量節(jié)點(diǎn)失效引發(fā)級(jí)聯(lián)失效的概率,分析了網(wǎng)絡(luò)魯棒性與$\theta $ 之間的相關(guān)性,并結(jié)合度分布函數(shù)詳細(xì)推導(dǎo)了$\theta $ 的解析表達(dá)式,基于解析表達(dá)式提出了兩種網(wǎng)絡(luò)魯棒性提升策略。仿真結(jié)果表明,在模型網(wǎng)絡(luò)和真實(shí)網(wǎng)絡(luò)中,根據(jù)被攻擊節(jié)點(diǎn)度的不同,通過(guò)調(diào)整節(jié)點(diǎn)初始負(fù)載參數(shù)$\tau $ 可以有效提高目標(biāo)網(wǎng)絡(luò)的魯棒性;DRC模型下級(jí)聯(lián)失效傳播范圍較Motter-Lai(ML)模型顯著減小。-
關(guān)鍵詞:
- 復(fù)雜網(wǎng)絡(luò) /
- 級(jí)聯(lián)失效 /
- 網(wǎng)絡(luò)魯棒性 /
- 節(jié)點(diǎn)冗余容量
Abstract: In View of the problem of fixed redundancy parameters in the traditional cascade failure model, this paper comprehensively considers the different attack levels of nodes and the dynamic changes of the network topology during the failure process, and establishes a cascading failure model based on Dynamic control of node Redundancy Capacity (DRC). By defining the critical factor$\theta $ of the phase transition of the network to measure the probability of node failure leading to cascading failure, the correlation between network robustness and$\theta $ is analyzed, and the analytic expression of$\theta $ is derived in detail by combining degree distribution function, Based on analytic expressions, two network robustness enhancement strategies are proposed. The simulation results show that in model network and real network, the robustness of target network can be effectively improved by adjusting the initial load parameter$\tau $ of nodes according to the difference of degree of nodes under attack. The failure propagation range of DRC model is significantly reduced compared with Motter-Lai (ML) model.-
Key words:
- Complex networks /
- Cascade failure /
- Robustness /
- Node redundancy capacity
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