Aging in citation networks

被引：58

作者：

Hajra, KB ^{[1
]}

Sen, P ^{[1
]}

机构：

[1] Univ Calcutta, Dept Phys, Kolkata 700009, W Bengal, India

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2005年 / 346卷 / 1-2期

关键词：

preferential attachment; time dependence; real world networks;

D O I：

10.1016/j.physa.2004.08.048

中图分类号：

O4 [物理学];

学科分类号：

0702 [物理学];

摘要：

In many growing networks, the age of the nodes plays an important role in deciding the attachment probability of the incoming nodes. For example, in a citation network, very old papers are seldom cited while recent papers are usually cited with high frequency. We study actual citation networks to find out the distribution T(t) of t, the time interval between the published and the cited paper. For different sets of data we find a universal behaviour: T(t) similar to t(-0.9) for t less than or equal to t(c) and T(t) similar to t(-2) for t > t(c) where t(c) similar to O(10). (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：44 / 48

页数：5

共 8 条

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