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This study investigates people's use of objects and the things they do in their daily lives. This is because interaction with objects can give us valuable insights with regard to behavior. The problem is that in an environment where multiple users interact with the same object, it is difficult to obtain data relating to each individual. To this end, we propose a model that extracts individual data...
In a ubiquitous computing environment, small computers attached to physical objects are required to send sensor data to many other nodes on a narrowband wireless network to provide various types of context-aware services. To reduce the cost of sending sensor data, this paper proposes a notation to indicate a pair of objects to share data with each other, based on the 'contact' relation between objects...
Recently, several studies have been made on techniques for the inference of contexts in indoor environments using sensor nodes attached to various objects. In existing systems, a sensor data server accumulates all data received from sensor nodes to infer contexts. However, when the number of nodes increases, the volume of the data concentrated on the server increases, and the calculation cost at the...
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