Search Results - subject:"Complex Network"

Ant colony clustering with fitness perception and pheromone diffusion for community detection in complex networks

Ji, Junzhong; Song, Xiangjing; Liu, Chunnian; Zhang, Xiuzhen - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 15, pp. 3260-3272

propose an adaptive approach based on ant colony clustering to discover communities in a complex network. The focus of the … method is the clustering process of an ant colony in a virtual grid, where each ant represents a node in the complex network … of our method is that the locations in the grid environment and the connections of the complex network structure are …

Persistent link: https://www.econbiz.de/10010872799

Mitigation strategies on scale-free networks against cascading failures

Wang, Jianwei - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 9, pp. 2257-2264

According to the dynamic characteristics of the cascading propagation, we introduce a mitigation mechanism and propose four mitigation methods on four types of nodes. By the normalized average avalanche size and a new measure, we demonstrate the efficiencies of the mitigation strategies on...

Persistent link: https://www.econbiz.de/10010873305

Community detection based on modularity and an improved genetic algorithm

Shang, Ronghua; Bai, Jing; Jiao, Licheng; Jin, Chao - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 5, pp. 1215-1231

Complex networks are widely applied in every aspect of human society, and community detection is a research hotspot in complex networks. Many algorithms use modularity as the objective function, which can simplify the algorithm. In this paper, a community detection method based on modularity and...

Persistent link: https://www.econbiz.de/10010873318

What is the difference of research collaboration network under different projections: Topological measurement and analysis

Li, Yongjun; You, Chun - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 15, pp. 3248-3259

Research collaboration network is a typical bipartite network that consists of papers and authors. This bipartite network could be transformed into one-mode networks by projection. In this paper, we used three different projections to construct three co-authorship networks. Topological features...

Persistent link: https://www.econbiz.de/10010873376

Time-varying human mobility patterns with metapopulation epidemic dynamics

Gong, Yong-Wang; Song, Yu-Rong; Jiang, Guo-Ping - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 19, pp. 4242-4251

In this paper, explicitly considering the influences of an epidemic outbreak on human travel, a time-varying human mobility pattern is introduced to model the time variation of global human travel. The impacts of the pattern on epidemic dynamics in heterogeneous metapopulation networks, wherein...

Persistent link: https://www.econbiz.de/10010873473

New method for counting the number of spanning trees in a two-tree network

Xiao, Yuzhi; Zhao, Haixing - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 19, pp. 4576-4583

The number of spanning trees is an important quantity characterizing the reliability of a network. Generally, the number of spanning trees in a network can be obtained by directly calculating a related determinant corresponding to the network. However, for a large network, evaluating the...

Persistent link: https://www.econbiz.de/10011057031

A study of design approach of spreading schemes for viral marketing based on human dynamics

Yang, Jianmei; Zhuang, Dong; Xie, Weicong; Chen, Guangrong - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 24, pp. 6494-6505

Before launching a real viral marketing campaign, it is needed to design a spreading scheme by simulations. Based on a categorization of spreading patterns in real world and models, we point out that the existing research (especially Yang et al. (2010) Ref. [16]) implicitly assume that if a...

Persistent link: https://www.econbiz.de/10011057233

Critical properties of contact process on the Apollonian network

da Silva, L.F.; Costa Filho, R.N.; Soares, D.J.B.; … - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 6, pp. 1532-1537

We investigate an epidemic spreading process by means of a computational simulation on the Apollonian network, which is simultaneously small-world, scale-free, Euclidean, space-filling and matching graphs. An analysis of the critical behavior of the Contact Process (CP) is presented using a...

Persistent link: https://www.econbiz.de/10011058395

The networks from medical knowledge and clinical practice have small-world, scale-free, and hierarchical features

Tachimori, Yutaka; Iwanaga, Hiroaki; Tahara, Takashi - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 23, pp. 6084-6089

Here, we constructed and analyzed a network (henceforth, “medical knowledge network”) derived from a commonly used medical text. We show that this medical knowledge network has small-world, scale-free, and hierarchical features. We then constructed a network from data from a hospital...

Persistent link: https://www.econbiz.de/10011058548

The Power Grid as a complex network: A survey

Pagani, Giuliano Andrea; Aiello, Marco - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 11, pp. 2688-2700

The statistical tools of Complex Network Analysis are of useful to understand salient properties of complex systems … scientific studies investigating the properties of different Power Grids infrastructures using Complex Network Analysis …

Persistent link: https://www.econbiz.de/10011058818