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Table 1 Networks and their characteristics of friendship index distribution, \(\beta \) is the friendship index, \(\gamma \) is the power law exponent

From: Friendship paradox in growth networks: analytical and empirical analysis

Network |V| |E| β > 1, % γ Directed
Amazon products 335,000 950,000 80.5 2.33
Phone calls 37,000 92,000 78.6 2.7
Github users 37,700 289,000 99.0 1.11
Facebook artists 50,500 819,000 93.4 1.6
Literature citations 449,700 4,689,500 84.3 1.34 +
Web hyperlinks 875,000 5,105,000 75.4 1.28 +