Title
Inferring High-Level Behavior from Low-Level Sensors
Abstract
We present a method of learning a Bayesian model of a traveler moving through an urban environment. This technique is novel in that it simultaneously learns a unified model of the traveler's current mode of transportation as well as his most likely route, in an unsupervised manner. The model is implemented using particle filters and learned using Expectation-Maximization. The training data is drawn from a GPS sensor stream that was collected by the authors over a period of three months. We demonstrate that by adding more external knowledge about bus routes and bus stops, accuracy is improved.
Year
DOI
Venue
2003
10.1007/978-3-540-39653-6_6
LECTURE NOTES IN COMPUTER SCIENCE
Keywords
Field
DocType
bayesian model,expectation maximization
Mobile computing,Importance sampling,Bayesian inference,Simulation,Expectation–maximization algorithm,Computer science,Particle filter,Real-time computing,Global Positioning System,Assisted GPS,Level sensor,Distributed computing
Conference
Volume
ISSN
Citations 
2864
0302-9743
251
PageRank 
References 
Authors
53.71
10
4
Search Limit
100251
Name
Order
Citations
PageRank
Donald J. Patterson11765219.99
Lin Liao21649209.71
Dieter Fox3123061289.74
Henry A. Kautz492711010.27