中国物理B ›› 2017, Vol. 26 ›› Issue (3): 38901-038901.doi: 10.1088/1674-1056/26/3/038901

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Multiple-predators-based capture process on complex networks

Rajput Ramiz Sharafat, Cunlai Pu(濮存来), Jie Li(李杰), Rongbin Chen(陈荣斌), Zhongqi Xu(许忠奇)   

  1. 1 Department of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 Industrial and Systems Engineering, University of Florida, Gainesville, FL 32611, USA
  • 收稿日期:2016-11-11 修回日期:2016-12-06 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: Cunlai Pu E-mail:pucunlai@njust.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61304154), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20133219120032), the Postdoctoral Science Foundation of China (Grant No. 2013M541673), and China Postdoctoral Science Special Foundation (Grant No. 2015T80556).

Multiple-predators-based capture process on complex networks

Rajput Ramiz Sharafat1, Cunlai Pu(濮存来)1,2, Jie Li(李杰)1, Rongbin Chen(陈荣斌)1, Zhongqi Xu(许忠奇)1   

  1. 1 Department of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 Industrial and Systems Engineering, University of Florida, Gainesville, FL 32611, USA
  • Received:2016-11-11 Revised:2016-12-06 Online:2017-03-05 Published:2017-03-05
  • Contact: Cunlai Pu E-mail:pucunlai@njust.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61304154), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20133219120032), the Postdoctoral Science Foundation of China (Grant No. 2013M541673), and China Postdoctoral Science Special Foundation (Grant No. 2015T80556).

摘要: The predator/prey (capture) problem is a prototype of many network-related applications. We study the capture process on complex networks by considering multiple predators from multiple sources. In our model, some lions start from multiple sources simultaneously to capture the lamb by biased random walks, which are controlled with a free parameter α. We derive the distribution of the lamb's lifetime and the expected lifetime <T>. Through simulation, we find that the expected lifetime drops substantially with the increasing number of lions. Moreover, we study how the underlying topological structure affects the capture process, and obtain that locating on small-degree nodes is better than on large-degree nodes to prolong the lifetime of the lamb. The dense or homogeneous network structures are against the survival of the lamb. We also discuss how to improve the capture efficiency in our model.

关键词: capture process, random walk, scale-free networks

Abstract: The predator/prey (capture) problem is a prototype of many network-related applications. We study the capture process on complex networks by considering multiple predators from multiple sources. In our model, some lions start from multiple sources simultaneously to capture the lamb by biased random walks, which are controlled with a free parameter α. We derive the distribution of the lamb's lifetime and the expected lifetime <T>. Through simulation, we find that the expected lifetime drops substantially with the increasing number of lions. Moreover, we study how the underlying topological structure affects the capture process, and obtain that locating on small-degree nodes is better than on large-degree nodes to prolong the lifetime of the lamb. The dense or homogeneous network structures are against the survival of the lamb. We also discuss how to improve the capture efficiency in our model.

Key words: capture process, random walk, scale-free networks

中图分类号:  (Networks and genealogical trees)

  • 89.75.Hc
05.40.Fb (Random walks and Levy flights) 05.60.Cd (Classical transport)