[1] Wang Z Y, Wang H X, Wen J R, Xiao Y H 2015 ACM International Conference on Information and Knowledge Management Melbourne, Australia, October 1823, 2015 p653

[2] Hagberg A A, Schult D A, Swart P J 2008Proceedings of the 7th Python in Science Conference Pasadena, CA USA, August 19–24, 2008 p11

[3] Watts D J, Strogatz S H[J]. Nature, 393, 440(1998).

[4] Barabási A L, Albert R[J]. Science, 286, 509(1999).

[5] Liu Z H, Zeng Y, Wu H L, Ma J F[J]. Journal of Computer Research and Development, 51, 2788(2014).

[6] An H Z, Zhong W Q, Chen Y R, Li H J, Gao X Y[J]. Energy, 74, 254(2014).

[7] Almog A, Squartini T, Garlaschelli D[J]. New J. Phys., 17, 013009(2015).

[8] Xing X, Yu D X, Tian X J, Wang S G[J]. Acta Phys. Sin., 66, 230501(2017).

[9] Colombo A, Campos G R D, Rossa F D[J]. IEEE Trans. Autom. Control, 62, 4933(2017).

[10] Wan X, Li Q M, Yuan J F, Schonfeld P M[J]. Accid. Anal. Prev., 82, 90(2015).

[11] Ye K H, Yuan X[J]. Resources Development & Market, 34, 59(2018).

[12] Hu Y H, Zhu D L[J]. Physica A, 388, 2061(2009).

[13] Pien K C, Han K, Shang W L, Majumdar A[J]. Transportmetrica A, 11, 772(2015).

[14] Albert R, Jeong H, Barabási A L[J]. Nature, 406, 378(2000).

[15] Broder A, Kumar R, Maghoul F, Raghavan P, Rajagopalan S, Stata R, Tomkins A, Wiener J[J]. Comput. Netw., 33, 309(2000).

[16] Albert R, Jeong H, Barabási A L[J]. Nature, 401, 130(1999).

[17] Aiello W, Chung F, Lu L Y 2001 42nd Annual Symposium on Foundations of Computer Science Las Vegas, NV, USA October 14–17, 2001 p510

[18] Aiello W, Chung F, Lu L Y 2000 Proceedings of the Thirty-second Annual ACM Symposium on Theory of Computing Portland, Oregon, USA, May 21–23, 2000 p171

[19] Rattigan M, Maier M, Jensen D 2006 Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining Philadelphia, PA, USA, August 20–23, 2006 p357

[20] Fiedor P[J]. Acta Phys. Pol. A, 127, 863(2015).

[21] Wang G J, Xie C, Stanley H E[J]. Comput. Econ., 51, 607(2018).

[22] Qiu L, Jia T M, Yang H J[J]. Acta Phys. Sin., 65, 198901(2016).

[23] Sun Y F, Wang C Y[J]. Acta Phys. Sin., 67, 148901(2018).

[24] Ruan Y R, Lao S Y, Wang J D, Bai L, Chen L D[J]. Acta Phys. Sin., 66, 038902(2017).

[25] Kitsak M, Gallos L K, Havlin S, Liljeros F, Muchnik L, Stanley H E, Makse H A[J]. Nat. Phys., 6, 888(2010).

[26] Li Q, Zhou T, Lu L Y, Chen D B[J]. Physica A, 404, 47(2014).

[27] Ruan Y R, Lao S Y, Xiao Y D, Wang J D, Bai L[J]. Chin. Phys. Lett., 33, 028901(2016).

[28] Kong J T, Huang J, Gong J X, Li E Y[J]. Acta Phys. Sin., 67, 098901(2018).

[29] Han D D, Yao Q Q, Chen Q, Qian J H[J]. Acta Phys. Sin., 66, 248901(2017).

[30] Niu R W, Pan G J[J]. Chin. Phys. Lett., 33, 068901(2016).

[31] Jiang J, Zhang R, Guo L, Li W, Cai X[J]. Chin. Phys. Lett., 33, 108901(2016).

[32] Tang J Y, Wang T, Wang W[J]. Journal of Software, 22, 2279(2011).

[33] NetworkX Developers https://networkx.github.io/documenta- tion/networkx1.9/modules/networkx/algorithms/components /connected.html#connected_component_subgraphs [2014-6-21]

[34] Newman M E J[J]. Phys. Rev. E, 67, 026126(2003).

[35] Holme P, Kim B J, Yoon C N, Yoon C N, Han S K[J]. Phys. Rev. E, 65, 056109(2002).