A system architecture for context-aware mobile computing
A system architecture for context-aware mobile computing
Rapid prototyping of mobile context-aware applications: the Cyberguide case study
MobiCom '96 Proceedings of the 2nd annual international conference on Mobile computing and networking
ISWC '97 Proceedings of the 1st IEEE International Symposium on Wearable Computers
A Wearable Haptic Navigation Guidance System
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
The People Sensor: A Mobility Aid for the Visually Impaired
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Extracting Context from Environmental Audio
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Visual Contextual Awareness in Wearable Computing
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Adding Generic Contextual Capabilities to Wearable Computers
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Active badges and personal interactive computing objects
IEEE Transactions on Consumer Electronics
Multi-sensor context-awareness in mobile devices and smart artifacts
Mobile Networks and Applications
Personal and Ubiquitous Computing
First Person Indoor/Outdoor Augmented Reality Application: ARQuake
Personal and Ubiquitous Computing
Collaborative Context Recognition for Handheld Devices
PERCOM '03 Proceedings of the First IEEE International Conference on Pervasive Computing and Communications
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
AGILE: adaptive indexing for context-aware information filters
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
An Experimental Investigation into Wayfinding Directions for Visually Impaired People
Personal and Ubiquitous Computing
SATIRE: a software architecture for smart AtTIRE
Proceedings of the 4th international conference on Mobile systems, applications and services
MOCA: a low-power, low-cost motion capture system based on integrated accelerometers
Advances in Multimedia
Towards implicit interaction by using wearable interaction device sensors for more than one task
Mobility '06 Proceedings of the 3rd international conference on Mobile technology, applications & systems
LaureaPOP indoor navigation service for the visually impaired in a WLAN environment
EHAC'07 Proceedings of the 6th WSEAS International Conference on Electronics, Hardware, Wireless and Optical Communications
LaureaPOP indoor navigation service for the visually impaired in a WLAN environment
EHAC'07 Proceedings of the 6th WSEAS International Conference on Electronics, Hardware, Wireless and Optical Communications
Interfacing human and computer with wireless body area sensor networks: the WiMoCA solution
Multimedia Tools and Applications
Personal and Ubiquitous Computing
Cost-effective wearable sensor to detect EMF
CHI '09 Extended Abstracts on Human Factors in Computing Systems
Context-Aware Activity Recognition through a Combination of Ontological and Statistical Reasoning
UIC '09 Proceedings of the 6th International Conference on Ubiquitous Intelligence and Computing
Preprocessing techniques for context recognition from accelerometer data
Personal and Ubiquitous Computing
COSAR: hybrid reasoning for context-aware activity recognition
Personal and Ubiquitous Computing
OWL 2 modeling and reasoning with complex human activities
Pervasive and Mobile Computing
Handheld augmented reality indoor navigation with activity-based instructions
Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services
An approach to data fusion for context awareness
CONTEXT'05 Proceedings of the 5th international conference on Modeling and Using Context
UCS'04 Proceedings of the Second international conference on Ubiquitous Computing Systems
Analysis of a kalman approach for a pedestrian positioning system in indoor environments
Euro-Par'07 Proceedings of the 13th international Euro-Par conference on Parallel Processing
A survey on smartphone-based systems for opportunistic user context recognition
ACM Computing Surveys (CSUR)
Walk detection and step counting on unconstrained smartphones
Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing
LocateMe: Magnetic-fields-based indoor localization using smartphones
ACM Transactions on Intelligent Systems and Technology (TIST) - Survey papers, special sections on the semantic adaptive social web, intelligent systems for health informatics, regular papers
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We apply machine-learning techniques to the task of context-awareness, or inferring aspects of the user's state given a stream of inputs from sensors worn by the person. We focus on the task of indoor navigation, and show that by integrating information from accelerometers, magnetometers, temperature and light sensors, we can collect enough information to infer the user's location. However, our navigation algorithm performs very poorly, with almost 50% error, if we use only the raw sensor signals. Instead, we introduce a ``data cooking'' module that computes appropriate high-level features from the raw sensor data. By introducing these high-level features, we are able to reduce the error rate to 2% in our example environment.