کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
976818 933154 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel hybrid mitigation strategy for improving the resiliency of hierarchical networks subjected to attacks
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Novel hybrid mitigation strategy for improving the resiliency of hierarchical networks subjected to attacks
چکیده انگلیسی
This paper studies the resiliency of hierarchical networks when subjected to random errors, static attacks, and cascade attacks. The performance is compared with existing Erdös-Rényi (ER) random networks and Barabasi and Albert (BA) scale-free networks using global efficiency as the common performance metric. The results show that critical infrastructures modeled as hierarchical networks are intrinsically efficient and are resilient to random errors, however they are more vulnerable to targeted attacks than scale-free networks. Based on the response dynamics to different attack models, we propose a novel hybrid mitigation strategy that combines discrete levels of critical node reinforcement with additional edge augmentation. The proposed modified topology takes advantage of the high initial efficiency of the hierarchical network while also making it resilient to attacks. Experimental results show that when the level of damage inflicted on a critical node is low, the node reinforcement strategy is more effective, and as the level of damage increases, the additional edge augmentation is highly effective in maintaining the overall network resiliency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 378, Issue 2, 15 May 2007, Pages 603-612
نویسندگان
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