THE PREFERENTIAL ATTACHMENT MECHANISM BASING ON WEIGHTED PAST CITATIONS

被引：1
|
作者：
Wang, Mingyang [1 ,2 ]
Yu, Guang [3 ]
Yu, Daren [1 ]
机构：
[1] Harbin Inst Technol, Sch Astronaut, Harbin 150001, Peoples R China
[2] NE Forestry Univ, Informat & Comp Engn Coll, Harbin 150040, Peoples R China
[3] Harbin Inst Technol, Sch Management, Harbin 150001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2011年 / 25卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Citation network; preferential attachment; past citations; RANDOM NETWORKS;
D O I：
10.1142/S0217979211100424
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, we investigate the influence of past citations k(i) on papers' attachment rate Pi(k,t) and propose a method to consider these influences by assigning different weights to k(i). The correlation r between Pi(k,t) and k(i) decrease rapidly with time, which suggests the different influences of past citations on the preferential attachment in citation networks. According to the different influences of k(i) on Pi(k,t), we put different weights to k(i) and find a good linear dependence between Pi(k,t) and the weighted past citations in three actual citation networks.
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页码：2055 / 2061
页数：7
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