Computer Science ›› 2023, Vol. 50 ›› Issue (6A): 221000080-7.doi: 10.11896/jsjkx.221000080

• Big Data & Data Science • Previous Articles     Next Articles

Tripartite Evolutionary Game Analysis of Medical Data Sharing Under Blockchain Architecture

YANG Jian, WANG Kaixuan   

  1. School of Information,Shanxi University of Finance and Economics,Taiyuan 030006,China
  • Online:2023-06-10 Published:2023-06-12
  • About author:YANG Jian,born in 1987,Ph.D,lectu-rer,is a member of China Computer Fe-deration.His main research interests include data management,data sharing/trading. WANG Kaixuan,born in 1974,Ph.D,assistant professor.His main research interests include big data and algorithmic game theory.
  • Supported by:
    Humanities and Social Science Fund of Ministry of Education of China(21YJCZH197) and Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2020L0252).

Abstract: To promote the development of health and medical big data and actively promote the safe sharing of medical data,this paper constructs a tripartite evolutionary game model of the system manager,data provider and data demander based on the blockchain architecture.Firstly,prospect theory is combined with evolutionary game,and the parameters of traditional evolutio-nary game are improved by the prospect value function.Secondly,the possibility of game equilibrium and its evolution trend are discussed.Finally,the influence of different factors on the decision-making of each participant in medical data sharing under blockchain architecture is discussed through numerical simulation.The results show that the choice of initial strategy has a signi-ficant influence on the stability of game strategy.The evolution of the system can be accelerated by improving the regulatory bene-fits of the system manager,reducing the perceived losses of the data provider,and improving the compensation of the data demander for actively reporting non-compliance behaviors,thus enhancing the trust of all participants and promoting the formation of trust relationships.

Key words: Blockchain, Medical data sharing, Prospect theory, Evolutionary game

CLC Number: 

  • G203
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