Paternity Relationship Model Of Network Information Rescource

In the information system such as network community, a large number of information resources (users, software, data, etc.) interact each other, they form complex relationship which is not only the base of various information activities, but also a important reasons of complex information system.It is important for researching these relationship,we can make use of them to solve some question: information trust,access control,audit and track etc.For example,when information rescource copy,revise etc,there will form derivative relationship,we can make use of it to compute the information trust;when information rescource communicate each other, there will form interactions relationship, we can make use of it to implement security analysis.How to describe the relationships between information resource is a important question.In recent years, various theories have been proposed to describe the complex relationships between information resources, for example:social network analysis and complex network can be used to describe the interactions relationship between the information resources,the data origin can describe the evolution history of data, but because the large number of network information resources, relations are complex and dynamic change, difficult to use a network, graph structure to describe the interaction and derivatives relationship of all objects:①the social networks and complex network analysis are concerned with the structural characteristics of the network, lacking the the description the nature of the relationship and the dynamic characteristics.②Now, the data origin research, mainly in a closed environment, getting all the origin of information by "observer" mode. The problem about data origin under open environment have not been solved better.Therefore, the complex and evolving relationship of network information resources is no longer a map, network structure can describe the static relationship, but a typical complex ecosystems.From the social point of view, in human society, people form a variety of relationships (family, schoolmates, hometown, academic, colleagues, etc.) in the production and living activities, this relationship is the basis of social activities. Information activities, interaction, calling,derive, which is similar to the relationship of human society. It is similar to describe the complex relationship between information resources and human society,so we can learn form human society to describe the relationship of information resource.In this dissertation,we adopt the "paternity" concept to describe the interaction and derivative relationship.We learn from description mechanism of sociology, establish a parental relationship model which can describe the complexity relationship of information resources. What’s more, "Local Approximation+the global" approach is adopted.From the perspective of individual information resources, describes the relationship with other resources, and then make use of the relationship identification mechanism to judge the relationship, to resolve describe question about relationship of information resources.In this dissertation, learn from the description of pedigree in human society, we make use of the family tree to descbibe the derivative relationship, and give an associated computing structures; learn from the description of the human social interaction mechanism,adopt relational network describle the inteactionl relationship.The information system has become an extension of the social system, with the social relations embedded in the information system. For example:in the online game community, users will form a race, alliances, mentor, friend and other relationships,they are the basis of game activity. From this perspective, the relationship between information resources are diverse, and they have the different semantics.As the relationship between information resources can have different types of family trees and networks, so it is nessary to describle multiple relationships of information resources.In this paper, a relationship ontology is established, which describes the hierarchy of relationship, and implement the reasoning mechanism based on descrip tion logic.In this dissertation,we adopt local relationship description mechanism, so it is nessary to establish a relationship identification mechanism to judg the relationship of information resource.According to complexity, we studied the three ways:Easy mode, Common Mode, Hard Mode. In order to effectively reduce the complexity, firstly,we calculate the properties of similarity relations, starting search from the close relationship.Finally, this parental relationship model is applied to security of the network community, adopt challenge/response mode, make use of the relationships as challenges questions, achieve dynamic authentication; make use of ontology reasoning to validate the security rules which was setted by files owner, achieve authority control. Lastly, a prototype system has been established to verify the validity of the model.