Temat: 89.75.-k - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Model of Communities Isolation at Hierarchical Modular Networks
Autorzy:: Kondratiuk, P.
Hołyst, J.
Powiązania:: https://bibliotekanauki.pl/articles/1409004.pdf
Data publikacji:: 2012-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 89.75.Hc
02.50.-r
89.75.-k
89.75.Da
89.75.Fb
Opis:: The model of community isolation was extended to the case when individuals are randomly placed at the nodes of hierarchical modular networks. It was shown that the average number of blocked nodes (individuals) increases in time as a power function, with the exponent depending on the network parameters. The distribution of the time when the first isolated cluster appears is unimodal, non-gaussian. The developed analytical approach is in a good agreement with the simulation data.
Źródło:: Acta Physica Polonica A; 2012, 121, 2B; B-67-B-71
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Hierarchical Cont-Bouchaud Model
Autorzy:: Paluch, R.
Suchecki, K.
Hołyst, J.
Powiązania:: https://bibliotekanauki.pl/articles/1388158.pdf
Data publikacji:: 2015-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 89.65.-s
89.65.Gh
89.75.-k
05.40.-a
Opis:: We extend the well-known Cont-Bouchaud model to include a hierarchical topology of agent's interactions. The influence of hierarchy on system dynamics is investigated by two models. The first one is based on a multi-level, nested Erdős-Rényi random graph and individual decisions by agents according to Potts dynamics. This approach does not lead to a broad return distribution outside a parameter regime close to the original Cont-Bouchaud model. In the second model we introduce a limited hierarchical Erdős-Rényi graph, where merging of clusters at a level h+1 involves only clusters that have merged at the previous level h and we use the original Cont-Bouchaud agent dynamics on resulting clusters. The second model leads to a heavy-tail distribution of cluster sizes and relative price changes in a wide range of connection densities, not only close to the percolation threshold.
Źródło:: Acta Physica Polonica A; 2015, 127, 3A; A-108-A-112
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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