Research On Trust Management For Digital Resources Interoperation And Service Convergence

The exciting advancement of information technology produced comprehensive and profound impact in political,economic,social fields of the world.At present,promoting the informationization and digital information resources construction in China becomes important and urgent strategic task in the new stage of economic and social development.As the important public cultural service infrastructure nowadays,libraries,museums,archives propel the construction and sharing of digital information resources forward.Many scholars begin to explore the research of digital resources integration and services convergence in libraries,museums,archives,and they have achieved good results.With the formation and spread of the internet environment and the development of digital information technologies,many collections provide services beyond time and space through the network for users.How to provide deep and integrated information resources services has become significant research subject in information science at home and abroad in recent years.This study is conducive to the formation of seamless integration and synergy sharing environment of knowledge resources.Currently,more and more emerging distributed computing models based on open network appear in people’s daily lives,and begins to be applied to public cultural service infrastructure.The environments of digital information resources sharing and services convergence present the significant features of participating entities autonomy,heterogeneous environment changing,flexible interaction and collaboration.The realization of sufficient digital information resources sharing and secure cooperation will be confronted with a number of new problems.Trust management mechanism can be conducive to construct healthy and effective cooperation relationships between participants without enough priori knowledge.This mechanism has become one of core technologies which solved security issues in the distributed open environment.Scholars launched extensive research at home and abroad about trust management mechanism.Multiple generic models or specific models were proposed.Existing trust management solutions exhibit various deficiencies in the face of emerging new environments,new demands,new applications.Digital resources interoperation and user interactions of digital service convergence represent the starting point for this paper.To meet the security demand of digital resources interoperation and digital service convergence in distributed open environment,this thesis studies dynamic trust management mechanism on the basis of detailed analysis of existing research achievements at home and abroad.The purpose of this study is to assess the subjective trust relationships accurately,and implement credible decisions effectively,and provide safe,reliable,convenient and efficient network environment for digital resources interoperation and digital service convergence.Firstly,the research background and significance of the topic were introduced,and the research status of related topics at home and abroad were summarized.This paper elaborated the involved core concepts and basic theory.The idea is to provide the theoretic foundation for the research.Secondly,the thesis discussed the existing system architecture and typical model of trust management and automated trust negotiation.A detailed analysis of application patterns of trust management mechanism was provided.Then this paper analyzed the typical practical applications at home and abroad with the theme of digital resources interoperation and digital service convergence.Typical applications of digital resources interoperation were discussed,and the patterns of digital service convergence were elaborated in terms of feasibility,breadth and profundity.Thirdly,the thesis designed trust management model of digital resources interoperation and adaptive automated trust negotiation model of digital service convergence for trust and safety requirements of digital resources interoperation and digital service convergence in open and dynamic network environment.The design principles of dynamic trust evaluation model were proposed.Then each functional module of trust management model in digital resources interoperation was designed.A novel feedback trust aggregation mechanism was studied.The thesis verified the validity of the mechanism through simulation.And then,each functional module of adaptive automated trust negotiation model of digital service convergence was designed.We expounded the process of adaptive automated trust negotiation,the description of access control policy and consistency checking algorithm.Finally,We summarized research conclusion and research contributions systematically,and pointed out the limitations of this research and discussed subsequent research projects.