the definition of context experienced an evolution in the research area of context-aware computing, but still suffers from either generality or incompleteness. Furthermore, many definitions are driven by the ease of i...
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ISBN:
(纸本)9783540742548
the definition of context experienced an evolution in the research area of context-aware computing, but still suffers from either generality or incompleteness. Furthermore, many definitions are driven by the ease of implementation. this paper introduces two extensions to available context definitions that provide a natural understanding of this concept to users of context-aware applications and facilitates the engineering of this concept for software developers of such applications.
context-aware systems are software systems which adapt their behaviour according to the context of use. the requirements engineering phase is recognized as a primordial step to develop robust implementations of contex...
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ISBN:
(纸本)9783540742548
context-aware systems are software systems which adapt their behaviour according to the context of use. the requirements engineering phase is recognized as a primordial step to develop robust implementations of context-aware systems since it establishes a comprehensive understanding of the problem space. this paper proposes the context-Oriented Domain Analysis (CODA) model which is a specialized approach for analyzing, structuring, and formalizing the software requirements of context-aware systems.
One of the foundations of cooperative work is the exchange of data and especially data that is bound to a file. the usage of tools like e-mail to exchange documents makes it difficult to keep the existing context and ...
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ISBN:
(纸本)9783540742548
One of the foundations of cooperative work is the exchange of data and especially data that is bound to a file. the usage of tools like e-mail to exchange documents makes it difficult to keep the existing context and metadata linked to the document. A general light-weighted approach and system-architecture will be presented that prevents the loss of document-meta-information and organizes a distributed document-context as an abstract layer that summarizes and structures available metadata. to a coherent unit.
context plays a crucial role when measuring the similarity of two concepts. Nonetheless, the modelling of context has been mostly neglected in existing similarity measurement theories. In this paper, we explore the in...
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ISBN:
(纸本)9783540742548
context plays a crucial role when measuring the similarity of two concepts. Nonetheless, the modelling of context has been mostly neglected in existing similarity measurement theories. In this paper, we explore the influence of context in existing similarity measurement approaches for the geospatial domain, focussing on whether and how these approaches account for it. Based on these observations, the processing of context during similarity measurement is analysed, and general implementation issues, especially ease of integration into existing, reasoning systems and computability, are discussed. the results of the different analyses are then combined into a generic set of characteristics of context for similarity measurement, with regard to the geospatial domain.
Autonomic computing is a very ambitious domain dealing with issues such as system self-management, proactive services and adaptation to unpredicted situations. the development of ubiquitous computing have shown also t...
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ISBN:
(纸本)9783540742548
Autonomic computing is a very ambitious domain dealing with issues such as system self-management, proactive services and adaptation to unpredicted situations. the development of ubiquitous computing have shown also the importance of adapting the services to their context. In general, a service cannot adapt autonomously to its context beyond the limits fixed a priori by its developer. In order to overcome this limitation, we propose a dynamically updatable service-context model (knowledge representation) that enables an adaptation platform to diagnose the service adequacy to context and automatically search for solutions in order to correct the inadequacy.
In e-commerce applications, no systematic research has been provided to evaluate if the use of a detailed and rich contextual representation improves the user modeling predictive performances. An underestimated issue ...
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ISBN:
(纸本)9783540742548
In e-commerce applications, no systematic research has been provided to evaluate if the use of a detailed and rich contextual representation improves the user modeling predictive performances. An underestimated issue is also evaluating if context could be inferred by existing customer data off-line, in spite of getting the customer involved on-line in the gathering process. In this paper, we address those problems, defining context as "the intent of" a customer purchase. To this aim, we collected data containing rich contextual information, hierarchically structured, by developing a special-purpose browser. the experimental results show that the finer the granularity of contextual information the better is the modeling of customers' behavior. Representing the context in a hierarchical structure is a necessary condition, for inferring the context off-line, but it's not a sufficient one.
Ambient intelligent systems are context aware by perceiving and reasoning about their environment, they perceive the needs of their users and proactively respond to these needs by being context sensitive. Users do not...
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ISBN:
(纸本)9783540742548
Ambient intelligent systems are context aware by perceiving and reasoning about their environment, they perceive the needs of their users and proactively respond to these needs by being context sensitive. Users do not interact withthese systems by traditional means only, but also through behavioural interfaces. this combination of mixed initiative systems and unconventional interfaces puts strong requirements on the explanatory capabilities of any system. the work presented here focuses on explaining the behaviour of an ambient intelligent systems to its users. It demonstrates how explanations can be combined withcontext to deal withthe different types of explanations that are required for a meaningful interaction of a system and its users.
contextual Graphs are a context-based formalism used in various real-world applications. they allow a uniform representation of elements of reasoning and of contexts for describing different human tasks such as diagno...
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ISBN:
(纸本)9783540742548
contextual Graphs are a context-based formalism used in various real-world applications. they allow a uniform representation of elements of reasoning and of contexts for describing different human tasks such as diagnosis and interpretation. the representation of reasoning by contextual Graphs supposes an efficient representation of the knowledge associated with a reasoning. Extending the previous view of (1) context relative to a focus, and (2) context as composed of external knowledge and contextual knowledge, in this paper we go a step further by proposing a description of the focus in terms of the instantiation of the contextual elements, which are drawn from domain knowledge. We present the results of this study in a real-world application that we are working on currently, namely the self-evaluation of drivers' behaviors in a situation presented within a large spectrum of contexts.
the paper presents an approach for automatically extracting views from a relational database schema, based on the knowledge of the application domain. In order to achieve such result, the possible contexts emerging fr...
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ISBN:
(纸本)9783540742548
the paper presents an approach for automatically extracting views from a relational database schema, based on the knowledge of the application domain. In order to achieve such result, the possible contexts emerging from the application domain are identified and, starting from the representation of the characterizing dimensions, a sequence of operations is applied to the schema to derive the portion of interest or, as we say, to tailor the schema with respect to each possible context. We introduce the tailoring operators as well as the method to compose partial views to obtain the final ones;a running example is used to lead the reader through the steps of the proposed methodology.
this paper is testing a DUAL-based model of memory. the model assumes decentralized representation of episodes as a coalition of agents and analogical transfer processes as the basis for memory reconstruction of our p...
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ISBN:
(纸本)9783540742548
this paper is testing a DUAL-based model of memory. the model assumes decentralized representation of episodes as a coalition of agents and analogical transfer processes as the basis for memory reconstruction of our past. It is a model of active reconstruction thereby allowing memory insertions and blending of episodes. the experiment explores the role of the degree of internal connectivity of the coalition representing the episode on the outcome of the reconstruction process. It demonstrates that the more the links between the elements of the episode are, the higher the number of details we recall, and the lesser the intruded elements and the context influence.
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