HyungHyo Lee

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The study deals with the most important elements of ubiquitous computing, that is, the toolkit to acquire, express and safely use the context information. To do so, we introduce CAST (context-awareness simulation toolkit) and show how it works. CAST generates users and devices in a virtual home domain, designates their relation and creates virtual context(More)
Current event processing systems simply define an event as a message about a status-change of data or information. As a result, the event models with domain-specific structure and attributes are not neutral to application domains. It is difficult for event models developed for a specific domain to be applied to other domains and event processing system. In(More)