Visualizing a Large-Scale Structure of Production Network by N-Body Simulation(Complex Networks,Econophysics-Physical Approach to Social and Economic Phenomena-)
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概要
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Our recent study of a nation-wide production network uncovered a community structure, namely how firms are connected by supplier-customer links into tightly-knit groups with high density in intra-groups and with lower connectivity in inter-groups. Here we propose a method to visualize the community structure by a graph layout based on a physical analogy. The layout can be calculated in a practical computation-time and is possible to be accelerated by a special-purpose device of GRAPE (gravity pipeline) developed for astrophysical N-body simulation. We show that the method successfully identifies the communities in a hierarchical way by applying it to the manufacturing sector comprising tenth million nodes and a half million edges. In addition, we discuss several limitations of this method, and propose a possible way to avoid all those problems.
- 2009-05-22
著者
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Fujiwara Yoshi
Nict Atr Cis Applied Network Science Lab.
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Fujiwara Yoshi
Nict/atr Cis Applied Network Science Lab.
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Fujiwara Yoshi
University of Hyogo
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Fujiwara Yoshi
NiCT ATR
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