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Keyword based search scheme imposes the problem of representing a lot of web pages in the search engines. Query expansion with relevant words increases the performance of search engines, but finding and using the relevant words is an open problem. In this research we describe a new model for query expansion which employs user context and semantic concepts to discover new words for obtaining accurate...
The complexity of developing and deploying context-aware pervasive-computing applications calls for distributed software infrastructures that unobtrusively support to contextual data collecting, information sharing and security privacy controlling. In this paper, we motivate a human-centric design for such an infrastructure to support context-aware applications. A novel peer to peer based semantic...
Since 1960, lots of AI researchers work on intelligent and reactive architectures able to manage multiple events and act in the environment. This issue is also part of Robotics domain. A decision process must be implemented in the robot brain to accomplish the multimodal interaction with human in human environment. In this article, we present a semantic agents architecture giving the robot the ability...
Ontology has a very wide range of applications, however the large-scale ontologies are not easy to manage and produce redundancy during deduction. In this paper, we first analyzed how to map the OWL into Graph and summarized six relations in Modular Modeling; an extended-BFS algorithm is introduced to partition large ontology into sub-ontology according to different combination of context information...
The advances in distributed sensing and wireless communication enable pervasive home applications which are quit information-rich. Hereby the integrated access and management of heterogeneous information becomes an increasingly important research topic. Moreover recent popularity and advances in visual aids (Google maps, 3D computer graphics, PS games, etc.) call for the more attractively intuitive...
To adapt communication in order to maintain the connectivity and the quality of communications in group-wide collaborative activities becomes challenging when considering mobile entities in a wireless environment, requiring responsiveness and availability of the communication system, and designing self-adaptable communication architecture remains a complex task. To simplify this task, semantic presents...
In order to solve the contradiction between information sharing and security privacy in the ubiquitous computing environment, a novel context policy management framework based on ontology is presented. The semantic specification of policy and dynamic policy implementation are described. And the usefulness and flexibility of our proposed framework are demonstrated by a typical ubiquitous computing...
VA (Virtual Assembly) provided a numerical platform for assembly design. However, lacking of intelligent guide is a critical problem in assembly design with VA technology. This paper proposes a novel concept of context-aware in VA, and discusses the connotation and extension of it. Such context should be a small world context that provided intelligent for virtual environment, while an ontology-based...
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