Yang Li, Jason Hong, and James Landay
International Conference on Ubiquitous Computing (Ubicomp)
We present a scenegraph-based schema, the ContextMap, to model context information. Locations with hierarchical relations are the skeleton of the ContextMap where nodes of people, objects and activities can be attached. Context information can be collected by traversing the ContextMap. The ContextMap provides a uniform method to represent physical and social semantics for context-aware computing. In addition, context ambiguity can be modeled as well.