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The evaluation of quality of service is a credible guarantee of pervasive service, particularly, it is a key link of the supervision to the service provider in the application of healthcare pervasive service. To ensure the quality of services in pervasive computing systems, a new system PXS and a new service quality estimation method, Local Fuzzy Comprehensive Estimation (LFCE) is proposed in this...
In a ubiquitous computing environment, contexts are initially got and stored on those nodes scattered over the environment. However, the traditional reasoning about contexts applied a centralized approach which aggravated the load of reasoning server and cost for communication of context. As an important approach for context reasoning, the rule-based reasoning can be easily decomposed of independent...
This paper proposes the CaPeR which is the context-awareness based architecture for personalized recommendation. The CaPeR provides the personalized recommender engine and the peer-to-peer context management framework. With a hybrid approach, the personalized recommender engine combines those contexts into the decisions on recommendations to get more comprehensive recommendation effectiveness. Owing...
In a pervasive computing environment, the personalized recommender system incorporates contexts into recommendation and becomes a multiple dimensional decision expert system. In this paper, we present DFre, a distributed fuzzy reasoning engine for personalization recommendation. With difference from those existing rule-based systems, the DFre puts an emphasis on the distribution of the recommendation...
In a personalized recommender system of a ubiquitous computing environment, the decision on recommendation depends on some uncertain factors. Fuzzy system has an ability of solving the reasoning uncertainty, and gets widely used in the context awareness based personalized recommender system. In this paper, we present a fuzzy reasoning model based on the Fuzzy Petri Net. The model considers the requirements...
This paper presents a novel service discovery framework for ubiquitous computing called hierarchical ubiquitous computing service discovery framework (HUCSDF). HUCSDF offers a more flexible and scalable architecture which can combine the local services with remote services. Based on the novel architecture, HUCSDF possesses some useful characteristics such as supporting migration of user's personal...
This paper presents a novel service discovery framework for ubiquitous computing called Ubiquitous Computing Service Discovery Framework (UCSDF). UCSDF offers a more flexible and scalable architecture which can combine the local services with remote services. That characteristic makes UCSDF different from many other service discovery frameworks and more adaptive to ubiquitous computing environments.
As innovative technologies like ubiquitous computing and grid computing continue to emerge and become more popular, the amount of resource available on them has come to an extreme extend. However, traditional provider-centric resource sharing architecture focuses on defining service interfaces so that users must know exactly where and how to explicitly ask for resources. This method can not satisfy...
The hospital and the health-care center of a community, as persons' life-care and health-care settings, need to provide more and better services for patients or residents. Establishing Electronic Medical Record (EMR) system is the necessity in hospital, and providing pervasive services is the further trend. Based on the EMR database, this paper presents a user-centric pervasive computing service model...
In pervasive computing environments, users can interact with a wide range of services, but which do not include legacy application services such as interactive desktop applications. How to use legacy service as a kind of transparent service mechanism in a pervasive computing environment is an important problem to solve during the transition from personal computing to pervasive computing. This paper...
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