Maintaining knowledge about temporal intervals
Communications of the ACM
The Aware Home: A Living Laboratory for Ubiquitous Computing Research
CoBuild '99 Proceedings of the Second International Workshop on Cooperative Buildings, Integrating Information, Organization, and Architecture
A context-aware experience sampling tool
CHI '03 Extended Abstracts on Human Factors in Computing Systems
Inferring Activities from Interactions with Objects
IEEE Pervasive Computing
Bazaar: a conceptual framework for physical space applications
UCS'04 Proceedings of the Second international conference on Ubiquitous Computing Systems
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The system framework, Tag and Think, proposed here enables us to introduce ubiquitous environments easily and simply by attaching sensor nodes to physical objects without any information about the objects. In the framework, we present a method that uses real-world knowledge constructed from a person's common knowledge to infer types of physical indoor objects and their states automatically from sensor data produced by the sensor nodes.