What is the central bank of Wikipedia?

Denis Demidov , Klaus M. Frahm (1, 2) , Dima Shepelyansky (1, 2)

1 ICQ - Cohérence Quantique (LPT)
2 LPT - Laboratoire de Physique Théorique

We analyze the influence and interactions of 60 largest world banks for 195 world countries using the reduced Google matrix algorithm for the English Wikipedia network with 5 416 537 articles. While the top asset rank positions are taken by the banks of China, with China Industrial and Commercial Bank of China at the first place, we show that the network influence is dominated by USA banks with Goldman Sachs being the central bank. We determine the network structure of interactions of banks and countries and PageRank sensitivity of countries to selected banks. We also present GPU oriented code which significantly accelerates the numerical computations of reduced Google matrix.

Domaines: Réseaux sociaux et d'information [cs.SI]; Physique et Société [physics.soc-ph]; Econométrie de la finance [q-fin.ST]; Mécanique statistique [cond-mat.stat-mech]

Denis Demidov, Klaus M. Frahm, Dima Shepelyansky. What is the central bank of Wikipedia?. Physica A, 2020, ⟨10.1016/j.physa.2019.123199⟩. ⟨hal-02045594⟩