Kali2Much

Abstract

Context management is one of the keys to creating context-aware systems for ubiquitous computing. Contextual informations comes from a large variety of sources and mostly in raw format without any interpretation which could be meaningless. Nowadays context management systems, as context information providers, build contextual semantic models with collected raw informations as their main task. There are different technologies for context modeling, such as Object-Role Modeling and Ontology modeling. Each technology has its own advantages and limitations. However, until now, there is no general standardized context model. Furthermore, a context management system for ubiquitous environment should be able to dynamically change the executing environment the same way other context-aware ubiquitous applications do. Therefore, we have designed Kali2Much Context Middleware, which offers a context management service based on an adaptation-driven architecture. It handles distributed context collection, context notifications and context source searching. Kali2Much is aimed to provide a service allowing its consumers to describe semantically what they need as context informations.