A User-Centered Location Model
Personal and Ubiquitous Computing
Using GPS to learn significant locations and predict movement across multiple users
Personal and Ubiquitous Computing
Cell-ID Location Technique, Limits and Benefits: An Experimental Study
WMCSA '04 Proceedings of the Sixth IEEE Workshop on Mobile Computing Systems and Applications
Location-based Services: Fundamentals and Operation
Location-based Services: Fundamentals and Operation
Extracting Places and Activities from GPS Traces Using Hierarchical Conditional Random Fields
International Journal of Robotics Research
A diary study of mobile information needs
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the 6th ACM conference on Embedded network sensor systems
Understanding the intent behind mobile information needs
Proceedings of the 14th international conference on Intelligent user interfaces
Identifying Meaningful Places: The Non-parametric Way
Pervasive '08 Proceedings of the 6th International Conference on Pervasive Computing
BeTelGeuse: A Platform for Gathering and Processing Situational Data
IEEE Pervasive Computing
EnTracked: energy-efficient robust position tracking for mobile devices
Proceedings of the 7th international conference on Mobile systems, applications, and services
Remote real-time trajectory simplification
PERCOM '09 Proceedings of the 2009 IEEE International Conference on Pervasive Computing and Communications
Ubiquitous Computing Fundamentals
Ubiquitous Computing Fundamentals
Ubiquitous Computing Fundamentals
Ubiquitous Computing Fundamentals
Energy-efficient rate-adaptive GPS-based positioning for smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
A grid-based algorithm for on-device GSM positioning
Proceedings of the 12th ACM international conference on Ubiquitous computing
Indoor location fingerprinting with heterogeneous clients
Pervasive and Mobile Computing
Energy-efficient trajectory tracking for mobile devices
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
Place lab: device positioning using radio beacons in the wild
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Learning and recognizing the places we go
UbiComp'05 Proceedings of the 7th international conference on Ubiquitous Computing
Practical metropolitan-scale positioning for GSM phones
UbiComp'06 Proceedings of the 8th international conference on Ubiquitous Computing
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Off-the-shelf modern mobile devices come with a number of inbuilt sensors, e.g., GPS, WiFi, GSM, accelerometer, compass, gyroscope, NFC and Bluetooth. Equipped with all these sensors and internet connectivity, modern mobile phones are enabling continuous sensing and increasingly many emergent mobile applications are using sensed context on the phone to understand users' needs and improve usability. However, limited battery power is a big hindrance to the deployment of continuous sensing on mobile devices and without any intelligent sensor management, the battery lasts only few hours. In this research, we emphasize on location-awareness and address the challenges in developing ubiquitous positioning solutions, cross-device indoor localization, position and trajectory tracking and inferring high-level contexts using machine-learning techniques on sensor data in an energy-efficient way.