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Title:Statistical verification and differential privacy in cyber-physical systems
Author(s):Wang, Yu
Director of Research:Dullerud, Geir E.
Doctoral Committee Chair(s):Dullerud, Geir E.
Doctoral Committee Member(s):Mitra, Sayan; West, Matthew; Egerstedt, Magnus; Viswanathan, Mahesh
Department / Program:Mechanical Sci & Engineering
Discipline:Mechanical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Model Reduction
Markov Chains
Temporal Logic
Multi-Agent Systems
Laplace Mechanisms
Abstract:This thesis studies the statistical verification and differential privacy in Cyber-Physical Systems. The first part focuses on the statistical verification of stochastic hybrid system, a class of formal models for Cyber-Physical Systems. Model reduction techniques are performed on both Discrete-Time and Continuous-Time Stochastic Hybrid Systems to reduce them to Discrete-Time Markov Chains and Continuous-Time Markov Chains, respectively; and statistical verification algorithms are proposed to verify Linear Inequality LTL and Metric Interval Temporal Logic on these discrete probabilistic models. In addition, the advantage of stratified sampling in verifying Probabilistic Computation Tree Logic on Labeled Discrete-Time Markov Chains is studied; this method can potentially be extended to other statistical verification algorithms to reduce computational costs. The second part focuses on the Differential Privacy in multi-agent systems that involve share information sharing to achieve overall control goals. A general formulation of the systems and a notion of Differential Privacy are proposed, and a trade-off between the Differential Privacy and the tracking performance of the systems is demonstrated. In addition, it is proved that there is a trade-off between Differential Privacy and the entropy of the unbiased estimator of the private data, and an optimal algorithm to achieve the best trade-off is given.
Issue Date:2018-08-21
Rights Information:Copyright 2018 Yu Wang
Date Available in IDEALS:2019-02-06
Date Deposited:2018-12

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