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Tourism sciences represent a very active research field in Computer Science today. In particular, in the realm of ubiquitous computing. The evolution of mobile devices and their proliferation in society, the advancement of communication technologies and the trend toward creating hybrid spaces (symbiosis between nature and technology) will trigger a radical change in the way persons involved in mobility,...
For IT-services providers, user satisfaction is the key for their company's success. Service providers need to understand the requirements of their users and translate them into their own business goals. Service malfunctions could have negative impact on user satisfaction, therefore to detect and resolve failures of the business process level has become a mission critical requirement for any IT-company...
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...
Knowledge Management (KM) plays the key role in upgrading the competitiveness of an organization, one of objectives of KM is to promote the share and reuse of all kind of knowledge. To this end, task circumstance (TC) of knowledge is crucial. Base on task circumstance, this paper proposes a framework of KM to facilitate knowledge reuse. According to the definition of domain ontology, this paper introduces...
In the context of the EU funded R&D project ATRACO we are developing a conceptual framework and a system architecture that will support the realization of adaptive and trusted ambient intelligent systems. Our approach is based on a number of well established engineering principles, such as the distribution of control and the separation of service interfaces from the service implementation, adopting...
In this paper we describe the ATRACO (adaptive and trusted ambient ecologies) approach towards next generation ambient intelligent environments. Several agents, such as a fuzzy task agent with learning capabilities and an interaction agent collaborate in a goal-related activity sphere and adapt heterogeneous artifacts within the sphere in order to support the user to fulfill tasks. All components...
This paper proposes a semantic pattern-based context-aware (SPBCA) middleware for ubiquitous computing environments. It introduces two concepts, the ontology and the proactive conversion, to solve the heterogeneity issues existing in the interaction process in the ubiquitous computing environments. Furthermore, it can support user-centric context awareness not only by automatic reactive information...
This article describes our approach towards the specification and realization of interoperability within Next Generation Ambient Intelligent Environments (NGAIE). These are populated with numerous devices and multiple occupants or users exhibit increasingly intelligent behaviour, provide optimized resource usage and support consistent functionality and human-centric operation. In NGAIEs users will...
Context awareness is one of the most fundamental issues in pervasive computing. In this paper, an ontology based context model is proposed, which defines "high-level" context ontology to provide basic concepts for sharing and managing context information. Our context model takes QoS and Security supporting into account. In addition, a context aware architecture based on semantic web service...
Automatic service composition typically consists of logical composition to produce an abstract workflow, followed by physical composition to transform it into a concrete workflow satisfying composition properties, such as Quality of service (QoS), preferences, and logic constraints. The composition properties have not been considered together up to now and, because they are abstract during the logical...
Next generation networks, as well as the future Internet, aim to provide context-sensitive business services that adapt to changing user needs, business goals, and environmental conditions. This paper describes the composition of an autonomic element, as a fundamental part of an autonomic architecture, which uses information models and semantics to link the business services with the services provided...
Classical tracking methods are often insufficient when dealing with complex scenarios. In order to solve tracking errors, innovative techniques based on the use of information about the context of the scene have been proposed. Context information ranges from precise measures computed on the pixels of the object neighborhood to high level representations of the entities and the activities of the scene...
This article describes the authors' experiences with a pragmatic, ontology-based approach to data portability and knowledge sharing, as used in the first Mission Execution Crew Assistant (MECA) proof-of-concept demonstrator software.
An information system distinguishes itself from other software as it is developed to facilitate the operation of an organization, hence it reflects its strategies, plans, organizations, processes, marketing etc. We believe that the requirement in the form of domain knowledge acquired in the early stage of system development can be organized and modeled in Enterprise Architecture. However research...
This paper presents an agent-based approach for realizing a new generation of intelligent environments referred to as adaptive ambient ecologies. These are highly distributed systems, which require new ways of communication and collaboration in order to support the realization of people's tasks. We use three types of agents for the main functions of planning, adaptation and interaction. The knowledge...
Semantic mapping between global and source ontology is required for resolving semantic heterogeneity among sources in scalable data integration system. Previously developed techniques (element and structural level) cannot map semantically a source ontology to the global ontology. The paper proposes a semantic based mapping technique. It utilizes OntoWordNet ontology for discovering all valid semantic...
Context awareness in Web services is gaining momentum. Since it is not a trivial task, it suffers from lack of a general solution. In this paper, we introduce a novel approach for context-aware semantic Web services which is applicable for any environment. It is established based on composition of context provider Web services and other context-aware semantic Web services. In addition, an extended...
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