Location-Aware Information Delivery with ComMotion
HUC '00 Proceedings of the 2nd international symposium on Handheld and Ubiquitous Computing
Using GPS to learn significant locations and predict movement across multiple users
Personal and Ubiquitous Computing
Extracting places from traces of locations
Proceedings of the 2nd ACM international workshop on Wireless mobile applications and services on WLAN hotspots
Accuracy characterization for metropolitan-scale Wi-Fi localization
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Because I carry my cell phone anyway: functional location-based reminder applications
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Extracting Places and Activities from GPS Traces Using Hierarchical Conditional Random Fields
International Journal of Robotics Research
Micro-Blog: sharing and querying content through mobile phones and social participation
Proceedings of the 6th international conference on Mobile systems, applications, and services
Mining user similarity based on location history
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Identifying Meaningful Places: The Non-parametric Way
Pervasive '08 Proceedings of the 6th International Conference on Pervasive Computing
SoundSense: scalable sound sensing for people-centric applications on mobile phones
Proceedings of the 7th international conference on Mobile systems, applications, and services
A framework of energy efficient mobile sensing for automatic user state recognition
Proceedings of the 7th international conference on Mobile systems, applications, and services
StarTrack: a framework for enabling track-based applications
Proceedings of the 7th international conference on Mobile systems, applications, and services
EnTracked: energy-efficient robust position tracking for mobile devices
Proceedings of the 7th international conference on Mobile systems, applications, and services
Using Context Annotated Mobility Profiles to Recruit Data Collectors in Participatory Sensing
LoCA '09 Proceedings of the 4th International Symposium on Location and Context Awareness
SurroundSense: mobile phone localization via ambience fingerprinting
Proceedings of the 15th annual international conference on Mobile computing and networking
Discovering semantically meaningful places from pervasive RF-beacons
Proceedings of the 11th international conference on Ubiquitous computing
VTrack: accurate, energy-aware road traffic delay estimation using mobile phones
Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems
Discovering significant places from mobile phones: a mass market solution
MELT'09 Proceedings of the 2nd international conference on Mobile entity localization and tracking in GPS-less environments
Energy-accuracy trade-off for continuous mobile device location
Proceedings of the 8th international conference on Mobile systems, applications, and services
Energy-efficient rate-adaptive GPS-based positioning for smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Improving energy efficiency of location sensing on smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Towards mobile phone localization without war-driving
INFOCOM'10 Proceedings of the 29th conference on Information communications
Exploiting multiple radii to learn significant locations
LoCA'05 Proceedings of the First international conference on Location- and Context-Awareness
Learning and recognizing the places we go
UbiComp'05 Proceedings of the 7th international conference on Ubiquitous Computing
Place-Its: a study of location-based reminders on mobile phones
UbiComp'05 Proceedings of the 7th international conference on Ubiquitous Computing
UbiComp'06 Proceedings of the 8th international conference on Ubiquitous Computing
FindingMiMo: tracing a missing mobile phone using daily observations
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
Energy-efficient positioning for smartphones using Cell-ID sequence matching
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
Energy-efficient trajectory tracking for mobile devices
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
Tapping into the Vibe of the city using VibN, a continuous sensing application for smartphones
Proceedings of 1st international symposium on From digital footprints to social and community intelligence
Employing user feedback for semantic location services
Proceedings of the 13th international conference on Ubiquitous computing
MAQS: a personalized mobile sensing system for indoor air quality monitoring
Proceedings of the 13th international conference on Ubiquitous computing
Deliberation for intuition: a framework for energy-efficient trip detection on cellular phones
Proceedings of the 13th international conference on Ubiquitous computing
Location based power analysis to detect malicious code in smartphones
Proceedings of the 1st ACM workshop on Security and privacy in smartphones and mobile devices
Activity-aware heart sensing in mobile healthcare
Proceedings of the First ACM Workshop on Mobile Systems, Applications, and Services for Healthcare
Mobility prediction-based smartphone energy optimization for everyday location monitoring
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
PBN: towards practical activity recognition using smartphone-based body sensor networks
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
Demo: AD-Sense: activity-driven sensing for mobile devices
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
Performance of collaborative GPS localization in pedestrian ad hoc networks
Proceedings of the third ACM international workshop on Mobile Opportunistic Networks
Poster: evaluating energy consumption of sensing algorithms - solely via models?
Proceedings of the 10th international conference on Mobile systems, applications, and services
Capturing transitions between users' semantically meaningful places using mobile devices
Proceedings of the 1st ACM workshop on Mobile systems for computational social science
Challenges for social sensing using WiFi signals
Proceedings of the 1st ACM workshop on Mobile systems for computational social science
A two-layer approach for energy efficiency in mobile location sensing applications
IFIP'12 Proceedings of the 11th international IFIP TC 6 conference on Networking - Volume Part II
Simulating user intervention for interactive semantic place recognition with mobile devices
Proceedings of the 2012 RecSys workshop on Personalizing the local mobile experience
Improving energy efficiency of personal sensing applications with heterogeneous multi-processors
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Detecting pedestrian flocks by fusion of multi-modal sensors in mobile phones
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
ARIEL: automatic wi-fi based room fingerprinting for indoor localization
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Automatically characterizing places with opportunistic crowdsensing using smartphones
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Surrounding context and episode awareness using dynamic Bluetooth data
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Model-based context privacy for personal data streams
Proceedings of the 2012 ACM conference on Computer and communications security
Distributed Active Sensor Scheduling for Target Tracking in Ultrasonic Sensor Networks
Mobile Networks and Applications
A case for automatic sharing over social networks
Proceedings of the First ACM International Workshop on Hot Topics on Interdisciplinary Social Networks Research
Handling user-defined private contexts for location privacy in LBS
Proceedings of the 20th International Conference on Advances in Geographic Information Systems
IODetector: a generic service for indoor outdoor detection
Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems
A context-based energy optimization algorithm for periodic localization in smartphones
Proceedings of the First ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems
Autonomous place naming system using opportunistic crowdsensing and knowledge from crowdsourcing
Proceedings of the 12th international conference on Information processing in sensor networks
Understanding the coverage and scalability of place-centric crowdsensing
Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing
Inferring social contextual behavior from bluetooth traces
Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication
Understanding customer malling behavior in an urban shopping mall using smartphones
Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication
ParkSense: a smartphone based sensing system for on-street parking
Proceedings of the 19th annual international conference on Mobile computing & networking
Proceedings of the 2013 ACM SIGPLAN international conference on Object oriented programming systems languages & applications
Social-Loc: improving indoor localization with social sensing
Proceedings of the 11th ACM Conference on Embedded Networked Sensor Systems
Accelerometer-based transportation mode detection on smartphones
Proceedings of the 11th ACM Conference on Embedded Networked Sensor Systems
Thrifty tracking: online GPS tracking with low data uplink usage
Proceedings of the 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Proceedings of the Second ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems
On the validity of geosocial mobility traces
Proceedings of the Twelfth ACM Workshop on Hot Topics in Networks
Pervasive and Mobile Computing
Pervasive and Mobile Computing
ipShield: a framework for enforcing context-aware privacy
NSDI'14 Proceedings of the 11th USENIX Conference on Networked Systems Design and Implementation
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Continuously understanding a user's location context in colloquial terms and the paths that connect the locations unlocks many opportunities for emerging applications. While extensive research effort has been made on efficiently tracking a user's raw coordinates, few attempts have been made to efficiently provide everyday contextual information about these locations as places and paths. We introduce SensLoc, a practical location service to provide such contextual information, abstracting location as place visits and path travels from sensor signals. SensLoc comprises of a robust place detection algorithm, a sensitive movement detector, and an on-demand path tracker. Based on a user's mobility, SensLoc proactively controls active cycle of a GPS receiver, a WiFi scanner, and an accelerometer. Pilot studies show that SensLoc can correctly detect 94% of the place visits, track 95% of the total travel distance, and still only consume 13% of energy than algorithms that periodically collect coordinates to provide the same information.