基于節(jié)點冗余容量動態(tài)控制的復(fù)雜網(wǎng)絡(luò)魯棒性研究
doi: 10.11999/JEIT200185 cstr: 32379.14.JEIT200185
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戰(zhàn)略支援部隊信息工程大學(xué) 鄭州 450000
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網(wǎng)絡(luò)通信與安全紫金山實驗室 南京 210000
基金項目: 國家自然科學(xué)基金(61802429, 61872382, 61521003),國家重點研發(fā)計劃(2017YFB0803201, 2017YFB0803204)
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
Funds: The National Natural Science Foundation of China(61802429, 61872382, 61521003), The National Key Research and Development Plan(2017YFB0803201, 2017YFB0803204)
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摘要: 針對傳統(tǒng)級聯(lián)失效模型中冗余參數(shù)固定不變的問題,該文綜合考慮節(jié)點受攻擊程度不同和失效過程中網(wǎng)絡(luò)拓撲的動態(tài)變化,建立了基于節(jié)點冗余容量動態(tài)控制(DRC)的級聯(lián)失效模型。通過定義網(wǎng)絡(luò)相變臨界因子
$\theta $ 衡量節(jié)點失效引發(fā)級聯(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)詳細推導(dǎo)了$\theta $ 的解析表達式,基于解析表達式提出了兩種網(wǎng)絡(luò)魯棒性提升策略。仿真結(jié)果表明,在模型網(wǎng)絡(luò)和真實網(wǎng)絡(luò)中,根據(jù)被攻擊節(jié)點度的不同,通過調(diào)整節(jié)點初始負載參數(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) /
- 級聯(lián)失效 /
- 網(wǎng)絡(luò)魯棒性 /
- 節(jié)點冗余容量
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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