The scale-free model for citation network
Preferential attachment mechanism (PAM) is considered to be one of the kernel ingredients in forming the scale-free topology of complex networks. In our previous work, we investigated the PAM for a typical real-world complex network—citation network by considering the dynamic citation properties in nodes in-degree. And the short-term preferential attachment mechanism (SMPAM) is proposed to explore the reason for forming the scale-free topology of citation network. Basing on SMPAM, we further proposed a scale-free network model for citation network. The model just considers the citations that papers obtained in the recent one year period to determine the attachment rate. Taking the mean field method, we deduced the degree distribution of citation network and found that the model evolving into a scale-free network with the power-law exponent r=2. The results by simulation also show a good power-law distribution of citation network, which exhibits the validity of the model proposed.
citation network preferential attachment time period
Wang Ming-Yang Yu Guang Yu Da-Ren
Northeast Forestry University, Harbin 150040, Peoples Republic of China Harbin Institute of Technology, Harbin 150001, Peoples Republic of China
国际会议
厦门
英文
773-776
2010-10-29（万方平台首次上网日期，不代表论文的发表时间）