Artificial intelligence: a modern approach
Artificial intelligence: a modern approach
The context toolkit: aiding the development of context-enabled applications
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Understanding and Using Context
Personal and Ubiquitous Computing
Use of ontologies in a pervasive computing environment
The Knowledge Engineering Review
Reasoning about Uncertain Contexts in Pervasive Computing Environments
IEEE Pervasive Computing
XCML: A Runtime Representation for the Context Modelling Language
PERCOMW '07 Proceedings of the Fifth IEEE International Conference on Pervasive Computing and Communications Workshops
Data visualisation and data mining technology for supporting care for older people
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility
Dynamic context management for pervasive applications
The Knowledge Engineering Review
An Autonomic Context Management System for Pervasive Computing
PERCOM '08 Proceedings of the 2008 Sixth Annual IEEE International Conference on Pervasive Computing and Communications
Adding High-level Reasoning to Efficient Low-level Context Management: A Hybrid Approach
PERCOM '08 Proceedings of the 2008 Sixth Annual IEEE International Conference on Pervasive Computing and Communications
The PERSONA Framework for Supporting Context-Awareness in Open Distributed Systems
AmI '08 Proceedings of the European Conference on Ambient Intelligence
SAIL: A Sensor Abstraction and Integration Layer for Context Awareness
SEAA '08 Proceedings of the 2008 34th Euromicro Conference Software Engineering and Advanced Applications
Hybrid reasoning in the CARE middleware for context awareness
International Journal of Web Engineering and Technology
Web Semantics: Science, Services and Agents on the World Wide Web
Reducing OWL entailment to description logic satisfiability
Web Semantics: Science, Services and Agents on the World Wide Web
Developing context-aware pervasive computing applications: Models and approach
Pervasive and Mobile Computing
A survey of context modelling and reasoning techniques
Pervasive and Mobile Computing
COSAR: hybrid reasoning for context-aware activity recognition
Personal and Ubiquitous Computing
Combining RDF and part of OWL with rules: semantics, decidability, complexity
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
Simultaneous tracking and activity recognition (STAR) using many anonymous, binary sensors
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Handbook of Ambient Assisted Living: Technology for Healthcare, Rehabilitation and Well-being - Volume 11 of Ambient Intelligence and Smart Environments
COMMODITY12: A smart e-health environment for diabetes management
Journal of Ambient Intelligence and Smart Environments - Design and Deployment of Intelligent Environments
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This paper presents an approach to structuring knowledge and reasoning for high-level interpretation of sensor data in e.g. independent living applications. The main contribution is to use generalized events, described in terms of 'space-time chunks', as a unifying and simplifying structuring principle. We use reasoning with ontologies and rules in combination with a database system, and also incorporate numerical computation. We show that an easy to use modeling formalism is obtained, and that reasoning is feasible at the time of service request, by using R-entailment, which enables efficient exploitation of ontologies and rules in the presence of RDF data. Two applications were built and evaluated using the approach described in this paper, both of which are related to monitoring well-being of elderly people, and both of which use simple, low-cost sensors.