Robotics-based location sensing using wireless ethernet
Proceedings of the 8th annual international conference on Mobile computing and networking
Practical robust localization over large-scale 802.11 wireless networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Bayesian Filtering for Location Estimation
IEEE Pervasive Computing
Learning and inferring transportation routines
AAAI'04 Proceedings of the 19th national conference on Artifical intelligence
Place lab: device positioning using radio beacons in the wild
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Learning and inferring transportation routines
Artificial Intelligence
Discovering personally meaningful places: An interactive clustering approach
ACM Transactions on Information Systems (TOIS)
Empirical-based analysis of a cooperative location-sensing system
Proceedings of the 1st international conference on Autonomic computing and communication systems
A strongly interacting dynamic particle swarm optimization method
Journal of Artificial Evolution and Applications - Particle Swarms: The Second Decade
Error control in distributed node self-localization
EURASIP Journal on Advances in Signal Processing
Who will be the customer?: a social robot that anticipates people's behavior from their trajectories
UbiComp '08 Proceedings of the 10th international conference on Ubiquitous computing
Scale-dependency in IP-based positioning of network clusters
Journal of Location Based Services - 4th International Conference on LBS and TeleCartography Hong Kong
Online co-localization in indoor wireless networks by dimension reduction
AAAI'07 Proceedings of the 22nd national conference on Artificial intelligence - Volume 2
Transferring localization models across space
AAAI'08 Proceedings of the 23rd national conference on Artificial intelligence - Volume 3
Co-localization from labeled and unlabeled data using graph Laplacian
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
WiFi-SLAM using Gaussian process latent variable models
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
ICRA'09 Proceedings of the 2009 IEEE international conference on Robotics and Automation
Localizing tags using mobile infrastructure
LoCA'07 Proceedings of the 3rd international conference on Location-and context-awareness
Controlling error propagation in mobile-infrastructure based localization
MELT'09 Proceedings of the 2nd international conference on Mobile entity localization and tracking in GPS-less environments
A long-duration study of user-trained 802.11 localization
MELT'09 Proceedings of the 2nd international conference on Mobile entity localization and tracking in GPS-less environments
Real-time GPS based outdoor WiFi localization system with map display
Advances in Engineering Software
Movement detection for power-efficient smartphone WLAN localization
Proceedings of the 13th ACM international conference on Modeling, analysis, and simulation of wireless and mobile systems
On map matching of wireless positioning data: a selective look-ahead approach
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
Discovering routines from large-scale human locations using probabilistic topic models
ACM Transactions on Intelligent Systems and Technology (TIST)
Trace-based mobility modeling for multi-hop wireless networks
Computer Communications
Nomatic: location by, for, and of crowds
LoCA'06 Proceedings of the Second international conference on Location- and Context-Awareness
Adaptive radio maps for pattern-matching localization via inter-beacon co-calibration
Pervasive and Mobile Computing
Practical metropolitan-scale positioning for GSM phones
UbiComp'06 Proceedings of the 8th international conference on Ubiquitous Computing
Outdoor exit detection using combined techniques to increase GPS efficiency
Expert Systems with Applications: An International Journal
AWESOM: automatic discrete partitioning of indoor spaces for wifi fingerprinting
Pervasive'12 Proceedings of the 10th international conference on Pervasive Computing
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Knowledge of the physical locations of mobile devices such as laptops or PDA's is becoming increasingly important with the rise of location-based services such as specialized web search, navigation and social network applications; furthermore, location information is a key foundation for high-level activity inferencing. In this paper we propose a novel technique for accurately estimating the locations of mobile devices and their wearers from wireless signal strengths. Our technique estimates time-varying device locations on a spatial connectivity graph whose outdoor edges correspond to streets and whose indoor edges represent hallways. staircases, elevators. etc. Use of a hierarchical Bayesian framework for learning a signal strength sensor model allows us not only to achieve higher accuracy than existing approaches. but to overcome many of their limitations. In particular, our technique is able to (1) seamlessly integrate new access points into the model, (2) make use of negative information (not detecting an access point), and (3) bootstrap a sensor model from sparse training data. Experiments demonstrate various properties of our system.