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An optimal algorithm for counting network motifs
Itzhack, Royi; Mogilevski, Yelena; Louzoun, Yoram - In: Physica A: Statistical Mechanics and its Applications 381 (2007) C, pp. 482-490
networks microscopic details. The commonly used algorithm for counting small-scale motifs is the one developed by Milo et al …. This algorithm is extremely costly in CPU time and actually cannot work on large networks, consisting of more than 100 …
Persistent link: https://www.econbiz.de/10010871718
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Evolution of gene regulatory networks: Robustness as an emergent property of evolution
Krishnan, Arun; Tomita, Masaru; Giuliani, Alessandro - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 8, pp. 2170-2186
Gene Regulatory Networks (GRNs) have become a major focus of interest in recent years. Although much work has been done …
Persistent link: https://www.econbiz.de/10010872292
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Stratified economic exchange on networks
Herrera, J.L.; Cosenza, M.G.; Tucci, K. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 8, pp. 1453-1457
We investigate a model of stratified economic interactions between agents when the notion of spatial location is introduced. The agents are placed on a network with near-neighbor connections. Interactions between neighbors can occur only if the difference in their wealth is less than a threshold...
Persistent link: https://www.econbiz.de/10010872330
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Empirical extraction of mechanisms underlying real world network generation
Itzhack, Royi; Muchnik, Lev; Erez, Tom; Tsaban, Lea; … - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 22, pp. 5308-5318
The generation mechanisms of real world networks have been described using multiple models. The mathematical features … of these models are usually extrapolated from statistical properties of a snapshot of these networks. We here propose an … edges surrounding a newly added edge. The N-node local structure measurements reproduce for some networks the now classical …
Persistent link: https://www.econbiz.de/10010872334
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The complex network of the Brazilian Popular Music
de Lima e Silva, D; Medeiros Soares, M; Henriques, M.V.C; … - In: Physica A: Statistical Mechanics and its Applications 332 (2004) C, pp. 559-565
We study the Brazilian Popular Music in a network perspective. We call the Brazilian Popular Music Network, BPMN, the graph where the vertices are the song writers and the links are determined by the existence of at least a common singer. The linking degree distribution of such graph shows power...
Persistent link: https://www.econbiz.de/10010872428
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Overlapping community detection using a generative model for networks
Wang, Zhenwen; Hu, Yanli; Xiao, Weidong; Ge, Bin - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 20, pp. 5218-5230
Detecting overlapping communities is a challenging task in analyzing networks, where nodes may belong to more than one … networks and real-world networks. The experiments show that this method is efficient at detecting overlapping communities and … can provide better performance on the networks where a majority of nodes belong to more than one community. …
Persistent link: https://www.econbiz.de/10010742306
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Synchronization by small time delays
Pruessner, G.; Cheang, S.; Jensen, H.J. - In: Physica A: Statistical Mechanics and its Applications 420 (2015) C, pp. 8-13
Synchronization is a phenomenon observed in all of the living and in much of the non-living world, for example in the heart beat, Huygens’ clocks, the flashing of fireflies and the clapping of audiences. Depending on the number of degrees of freedom involved, different mathematical approaches...
Persistent link: https://www.econbiz.de/10011117833
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An alternative way to track the hot money in turbulent times
Sensoy, Ahmet - In: Physica A: Statistical Mechanics and its Applications 419 (2015) C, pp. 215-220
During recent years, networks have proven to be an efficient way to characterize and investigate a wide range of … correlations between these exchange rates. Then, using evolving networks obtained from strong correlations, we propose an …
Persistent link: https://www.econbiz.de/10011117921
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Community structure in the United Nations General Assembly
Macon, Kevin T.; Mucha, Peter J.; Porter, Mason A. - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 1, pp. 343-361
We study the community structure of networks representing voting on resolutions in the United Nations General Assembly …. We construct networks from the voting records of the separate annual sessions between 1946 and 2008 in three different … ways: (1) by considering voting similarities as weighted unipartite networks; (2) by considering voting similarities as …
Persistent link: https://www.econbiz.de/10011062351
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Effective dimensions in networks with long-range connections
Moukarzel, Cristian F. - In: Physica A: Statistical Mechanics and its Applications 356 (2005) 1, pp. 157-161
according to P(r)∼r-μ. By changing the decay exponent μ one can go from d-dimensional short-range networks to ∞-dimensional … networks topologically similar to random graphs. An effective dimension dchem(μ) can be defined in terms of the shortest …-path properties of these networks. These effective dimensions dchem are calculated here in one and two dimensions, for system sizes of …
Persistent link: https://www.econbiz.de/10011062380