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Complex networks are ubiquitous in natural science and social science, ranging from social and information networks to technological and biological networks. The roles of nodes in networks are often distinct, the most influential nodes often play an important role in understanding the spreading process and developing strategies to control epidemic spreading or accelerating the information diffusion. Therefore, identifying the influential nodes in complex networks has great theoretical and practical significance. Some centrality indices have been proposed to identify the influential nodes in recent years, but most of the existing algorithms are only appropriate to the identifying of single influential node. Many times, spreading process is initiated by simultaneously choosing multiple nodes as the spreading sources, such as rumors, opinions, advertisements, etc. Therefore, it is necessary to develop efficient methods of identifying the multiple influential nodes in complex networks. In this paper, a method based on region density curve of networks (RDC) is proposed to identify the multiple influential nodes in complex networks. Firstly, we rearrange all nodes of network in a new sequence, and then plot the region density curve for network. Finally, we identify the multiple influential nodes based on the valley points of region density curve. Using two kinds of spreading models, we compare RDC index with other indices in different real networks, such as degree, degree discount, k-shell, betweenness and their corresponding coloring methods. The results show that the influential nodes chosen according to our method are not only dispersively distributed, but also are relatively important nodes in networks. In addition, the time complexity of our method is low because it only depends on the local information of networks.
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Keywords:
- complex networks /
- multiple influential nodes /
- region density curve
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[6] Liu Y, Tang M, Do Y H, Hui P M 2017 Phys. Rev. E 96 022323
[7] Freeman L C 1979 Social Networks 1 215
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[18] Hu Z L, Ren Z M, Yang G Y, Liu J G 2014 Int. J. Mod. Phys. C 25 1440013
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[20] Guo L, Lin J H, Guo Q, Liu J G 2016 Phys. Lett. A 380 837
[21] Xiang B B, Bao Z K, Ma C, Zhang X Y, Chen H S, Zhang H F 2018 Chaos 28 013122
[22] Zhao Z Y, Yu H, Zhu Z L, Wang X F (in Chinese) [赵之滢, 于海, 朱志良, 汪小帆 2014 计算机学报 37 753]
[23] Chen W, Wang Y, Yang S 2009 Proceedings of the 15th International Conference on Knowledge Discovery and Data Mining Pairs, France, June 28-July 01, 2009 p199
[24] Newman M E J 2004 Phys. Rev. E 69 066133
[25] Liu Y, Tang M, Zhou T, Do Y H 2015 Sci. Rep. 5 13172
[26] Liu J G, Lin J H, Guo G, Zhou T 2016 Sci. Rep. 6 21380
[27] Li R Q, Wang W, Shu P P, Yang H, Pan L M, Cui A X, Tang M (in Chinese) [李睿琪, 王伟, 舒盼盼, 杨慧, 潘黎明, 崔爱香, 唐明 2016 复杂系统与复杂性科学 3 1]
[28] Borge-Holthoefer J, Moreno Y 2012 Phys. Rev. E 85 026116
[29] L L Y, Zhou T 2013 Link Prediction (Beijing:Higher Education Press) p286 (in Chinese) [吕琳媛, 周涛 2013 链路预测(北京:高等教育出版社) 第286页]
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[1] Liu J G, Ren Z M, Guo Q, Wang B H 2013 Acta Phys. Sin. 62 178901 (in Chinese) [刘建国, 任卓明, 郭强, 汪秉宏 2013 物理学报 62 178901]
[2] L L Y, Chen D B, Ren X L, Zhang Q M, Zhang Y C, Zhou T 2016 Phys. Rep. 650 1
[3] Huang B, Zhao X Y, Qi K, Tang M, Do Y H (in Chinese) [黄斌, 赵翔宇, 齐凯, 唐明, 都永海 2013 物理学报 62 218905]
[4] Ren X L, L L Y 2014 Chin. Sci. Bull. 59 1175 (in Chinese) [任晓龙, 吕琳媛 2014 科学通报 59 1175]
[5] Shu P P, Wang W, Tang T, Shang M S 2015 Acta Phys. Sin. 64 208901 (in Chinese) [舒盼盼, 王伟, 唐明, 尚明生 2015 物理学报 64 208901]
[6] Liu Y, Tang M, Do Y H, Hui P M 2017 Phys. Rev. E 96 022323
[7] Freeman L C 1979 Social Networks 1 215
[8] Freeman L C 1977 Sociometry 40 35
[9] Sabidussi G 1966 Psychometrika 31 581
[10] Bonacich P 1972 J. Math. Sociol. 2 113
[11] Kitsak M, Gallos L K, Havlin S, Liljeros F, Muchnik L, Stanley H E, Makse H A 2010 Nature Phys. 6 888
[12] Chen D B, L L Y, Shang M S, Zhang Y C, Zhou T 2012 Physica A 391 1777
[13] Han Z M, Wu Y, Tan X S, Duan D G, Yang W J 2015 Acta Phys. Sin. 64 058902 (in Chinese) [韩忠明, 吴杨, 谭旭升, 段大高, 杨伟杰 2015 物理学报 64 058902]
[14] Su X P, Song Y R 2015 Acta Phys. Sin. 64 020101 (in Chinese) [苏晓萍, 宋玉蓉 2015 物理学报 64 020101]
[15] Radicchi F, Castellano C 2016 Phys. Rev. E 93 062314
[16] Ruan Y R, Lao S Y, Wang J D, Bai L, Hou L L 2017 Acta Phys. Sin. 66 208901 (in Chinese) [阮逸润, 老松杨, 王竣德, 白亮, 候绿林 2017 物理学报 66 208901]
[17] Bao Z K, Ma C, Xiang B B, Zhang H F 2017 Physica A 468 391
[18] Hu Z L, Ren Z M, Yang G Y, Liu J G 2014 Int. J. Mod. Phys. C 25 1440013
[19] Zhao X Y, Huang B, Tang M, Zhang H F, Chen D B 2015 Eur. Phys. Lett. 108 68005
[20] Guo L, Lin J H, Guo Q, Liu J G 2016 Phys. Lett. A 380 837
[21] Xiang B B, Bao Z K, Ma C, Zhang X Y, Chen H S, Zhang H F 2018 Chaos 28 013122
[22] Zhao Z Y, Yu H, Zhu Z L, Wang X F (in Chinese) [赵之滢, 于海, 朱志良, 汪小帆 2014 计算机学报 37 753]
[23] Chen W, Wang Y, Yang S 2009 Proceedings of the 15th International Conference on Knowledge Discovery and Data Mining Pairs, France, June 28-July 01, 2009 p199
[24] Newman M E J 2004 Phys. Rev. E 69 066133
[25] Liu Y, Tang M, Zhou T, Do Y H 2015 Sci. Rep. 5 13172
[26] Liu J G, Lin J H, Guo G, Zhou T 2016 Sci. Rep. 6 21380
[27] Li R Q, Wang W, Shu P P, Yang H, Pan L M, Cui A X, Tang M (in Chinese) [李睿琪, 王伟, 舒盼盼, 杨慧, 潘黎明, 崔爱香, 唐明 2016 复杂系统与复杂性科学 3 1]
[28] Borge-Holthoefer J, Moreno Y 2012 Phys. Rev. E 85 026116
[29] L L Y, Zhou T 2013 Link Prediction (Beijing:Higher Education Press) p286 (in Chinese) [吕琳媛, 周涛 2013 链路预测(北京:高等教育出版社) 第286页]
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