Research And Implementation Of 3D Virtual Exhibution System Based On Context Awareness

With the development of computer technology and network technology, the on-line information resource shows explosive growth. Under the Internet environment, the users' information needs present more multiple and personalized. Internet users especially focus on information's richness, novel and timeliness. In the magnanimous and disorderly information, the information user needed is a very tiny part. This makes user need to spend a lot of time and energy to get the aim. Traditional information service already can't effectively help users get rid of the information overload and information disorientation. So when the conception of System personalized service has been put forward, it quickly comes to be a hot point. Even there are lot of personalize systems recent years , but traditional personalize service didn't give enough care about the user context information during the process of service strategy design and implement. This make the service weak on the degree of personalize and intelligentize which hurts user experience.Based on context awareness in pervasive computing and applied to the 3D virtual exhibition system, in this dissertation the research status and development trends about context awareness was described, as well as the application areas ,the key technologies for context awareness were discussed, and the application and limitations were verified in personalized virtual display system. In this paper, according to the needs of context awareness technology in pervasive computing environment, first of all, the research status of context awareness computing is analyzed, through the analysis and summing up the existing context awareness computing systems, a conceptual model of context awareness computing is set up, and the modeling, system framework , application and other issues about the context awareness computing were discussed as the topics, so as to provide a basis and guidance for further research. On this basis, the design and implementation technologies of context awareness computing is continued to be discussed in this paper, including modeling of the context information, storage, querying and so on, with semantic ontology modeling tools, typical user interest model for users and semantic product model based on product style constraint for products in display system are set up. Finally, context awareness model would be applied in a three-dimensional virtual product display system as a validation platform.The study shows that: context awareness application model based on Pervasive Computing, in some extent, can solve a number of issues arising from the existing calculation mode. Assisted by ontology modeling and other semantic modeling technologies, it can further improve the semantic of Pervasive Computing system, and more conducive to knowledge sharing, then, reflects the goal of Pervasive Computing. The study has a certain engineering application value and the significance of further study.