Physics – Physics and Society
Scientific paper
2006-11-15
Physica A 383, 134 (2007)
Physics
Physics and Society
13 pages, 10 figures and 4 tables
Scientific paper
10.1016/j.physa.2007.04.095
In this study we consider relations between companies in Poland taking into account common branches they belong to. It is clear that companies belonging to the same branch compete for similar customers, so the market induces correlations between them. On the other hand two branches can be related by companies acting in both of them. To remove weak, accidental links we shall use a concept of threshold filtering for weighted networks where a link weight corresponds to a number of existing connections (common companies or branches) between a pair of nodes.
Chmiel Anna M.
Holyst Janusz A.
Sienkiewicz Julian
Suchecki Krzysztof
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