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Title:Resource efficient information integration in cyber-physical systems
Author(s):Su, Lu
Director of Research:Abdelzaher, Tarek F.
Doctoral Committee Chair(s):Abdelzaher, Tarek F.
Doctoral Committee Member(s):Han, Jiawei; Nahrstedt, Klara; Liu, Xue
Department / Program:Computer Science
Discipline:Computer Science
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Cyber-Physical Systems
Wireless Sensor Networks
Information Integration
Data Aggregation
Decision Aggregation
Quality of Information
System Resources
Abstract:The proliferation of increasingly capable and affordable sensing devices that pervade every corner of the world has given rise to the fast development and wide deployment of Cyber-Physical Systems (CPS). Hosting a whole spectrum of civilian and military applications, cyber-physical systems have fundamentally changed people's ways of everyday living, working, and interactions with the physical world in general. Despite their tremendous benefits, cyber-physical systems pose great new research challenges, of which, this thesis targets on one important facet, that is, to understand and optimize the tradeoff between the quality of information (QoI) provided by the sensor nodes and the consumption of system resources. On one hand, individual sensors are not reliable, due to various possible reasons including incomplete observations, environment and circuit board noise, poor sensor quality, lack of sensor calibration, or even intent to deceive. To address this sensor reliability problem, one common approach is to integrate information from multiple sensors that observe the same events, as this will likely cancel out the errors of individual sensors and improve the quality of information. On the other hand, cyber-physical systems usually have limited resources (e.g., energy, bandwidth, storage, time, space, money, devices or even the human labor). Therefore, it is usually prohibitive to collect data from a large number of sensors due to the potential excessive resource consumption. Targeting on the above challenge, in this thesis we present a suite of resource-efficient information integration tools that can intelligently integrate information from distributed sensors so that the highest quality of information can be achieved, under the constraint of system resources. The proposed information integration toolkit bears superior generalizability and flexibility, and thus can be applied to a full spectrum of application domains.
Issue Date:2014-01-16
Rights Information:Copyright 2013 Lu Su
Date Available in IDEALS:2014-01-16
Date Deposited:2013-12

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