1,788 research outputs found
Complex networks theory for analyzing metabolic networks
One of the main tasks of post-genomic informatics is to systematically
investigate all molecules and their interactions within a living cell so as to
understand how these molecules and the interactions between them relate to the
function of the organism, while networks are appropriate abstract description
of all kinds of interactions. In the past few years, great achievement has been
made in developing theory of complex networks for revealing the organizing
principles that govern the formation and evolution of various complex
biological, technological and social networks. This paper reviews the
accomplishments in constructing genome-based metabolic networks and describes
how the theory of complex networks is applied to analyze metabolic networks.Comment: 13 pages, 2 figure
Default contagion risks in Russian interbank market
Systemic risks of default contagion in the Russian interbank market are
investigated. The analysis is based on considering the bow-tie structure of the
weighted oriented graph describing the structure of the interbank loans. A
probabilistic model of interbank contagion explicitly taking into account the
empirical bow-tie structure reflecting functionality of the corresponding nodes
(borrowers, lenders, borrowers and lenders simultaneously), degree
distributions and disassortativity of the interbank network under consideration
based on empirical data is developed. The characteristics of contagion-related
systemic risk calculated with this model are shown to be in agreement with
those of explicit stress tests.Comment: Final version, to appear in Physica
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