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A PROGRAMMING MODEL FOR CONTEXT-AWARE APPLICATIONS IN DIGITAL ECOSYSTEMS
Abstract
Ecosystems are open adaptive systems with self-organizing properties; they are based on local interaction of the composing elements and generating a general end-result. Digital ecosystems incorporate these features in context-aware applications that work together for the efficient solving of complex dynamic problems. This article considers the digital ecosystems as being open-system of applications with a certain degree of context-awareness. It also presents Econtxt a programming model for the context used by context-aware applications running in digital ecosystems, and proposes an implementation of proposed model. A wide range of approaches of the context have been presented in the specialized literature, the model of context presented in this article is an objectual model, context data is represented in the form of a stream; the streams can connect in various filtering and processing schemes, finally a number of reactive variables are modified in the application. An implementation of proposed context model is presented and analysed in final part of the article.
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