Record Details

Community sense and response systems / Matthew N. Faulkner ; Andreas Krause, K. Mani Chandy, and Thomas H. Heaton, advisors ; Andreas Krause, committee chair
Faulkner, Matthew Nicholas, author
Krause, R. Andreas (Rainer Andreas), advisor
Chandy, K. Mani, advisor
Heaton, Thomas H., advisor
Krause, R. Andreas (Rainer Andreas), committee chair
California Institute of Technology.
Pasadena, California : California Institute of Technology, [2014]
xi, 119 leaves : illustrations (some color) ; 28 cm
[CIT theses] ; 2014
The proliferation of smartphones and other internet-enabled, sensor-equipped consumer devices enables us to sense and act upon the physical environment in unprecedented ways. This thesis considers Community Sense-and-Response (CSR) systems, a new class of web application for acting on sensory data gathered from participants' personal smart devices. The thesis describes how rare events can be reliably detected using a decentralized anomaly detection architecture that performs client-side anomaly detection and server-side event detection. After analyzing this decentralized anomaly detection approach, the thesis describes how weak but spatially structured events can be detected, despite significant noise, when the events have a sparse representation in an alternative basis. Finally, the thesis describes how the statistical models needed for client-side anomaly detection may be learned efficiently, using limited space, via coresets. The Caltech Community Seismic Network (CSN) is a prototypical example of a CSR system that harnesses accelerometers in volunteers' smartphones and consumer electronics. Using CSN, this thesis presents the systems and algorithmic techniques to design, build and evaluate a scalable network for real-time awareness of spatial phenomena such as dangerous earthquakes
Advisor and committee chair names found in the thesis' metadata record in the digital repository
Dissertation note:
Thesis (Ph.D.) -- California Institute of Technology, 2014
Bibliography, etc. note:
Includes bibliographical references
Record appears in:

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 Record created 2015-09-18, last modified 2016-11-02

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