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An effective method to improve the robustness of small-world networks under attack |
Zhang Zheng-Zhen (张争珍)a, Xu Wen-Jun (许文俊)a, Zeng Shang-You (曾上游)b, Lin Jia-Ru (林家儒)a |
a School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; b College of Electronic Engineering, Guangxi Normal University, Guilin 541004, China |
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Abstract In this study, the robustness of small-world networks to three types of attack is investigated. Global efficiency is introduced as the network coefficient to measure the robustness of a small-world network. The simulation results prove that an increase in rewiring probability or average degree can enhance the robustness of the small-world network under all three types of attack. The effectiveness of simultaneously increasing both rewiring probability and average degree is also studied, and the combined increase is found to significantly improve the robustness of the small-world network. Furthermore, the combined effect of rewiring probability and average degree on network robustness is shown to be several times greater than that of rewiring probability or average degree individually. This means that small-world networks with a relatively high rewiring probability and average degree have advantages both in network communications and in good robustness to attacks. Therefore, simultaneously increasing rewiring probability and average degree is an effective method of constructing realistic networks. Consequently, the proposed method is useful to construct efficient and robust networks in a realistic scenario.
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Received: 21 September 2013
Revised: 24 April 2014
Accepted manuscript online:
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PACS:
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89.75.Fb
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(Structures and organization in complex systems)
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89.75.Hc
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(Networks and genealogical trees)
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89.75.-k
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(Complex systems)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61101117 and 61171100), the National Key Scientific and Technological Project of China (Grant Nos. 2012ZX03004005002 and 2013ZX03003012), the National High Technology Research and Development Program of China (863 Program, Grant No. 2014AA01A701), the Special Youth Science Foundation of Jiangxi Province of China (Grant No. 20133ACB21007), the Natural Science Foundation of Jiangxi Province of China (Grant Nos. 20132BAB201018 and 20132BAB201018), and the Fundamental Research Funds for the Central Universities, China (Grant No. BUPT2012RC0112). |
Corresponding Authors:
Lin Jia-Ru
E-mail: jrlin@bupt.edu.cn
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Cite this article:
Zhang Zheng-Zhen (张争珍), Xu Wen-Jun (许文俊), Zeng Shang-You (曾上游), Lin Jia-Ru (林家儒) An effective method to improve the robustness of small-world networks under attack 2014 Chin. Phys. B 23 088902
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