A system-wide anonymity metric
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In this thesis we present a critical analysis of the system-wide anonymity metric by Edman et al. , which is based on the permanent value of a doubly-stochastic matrix. From the view of intuitive understanding, we show that a metric that looks no further than the permanent, a composite value, is at best a rough indicator of anonymity, We find the range where its inaccuracy is acute, and propose a better anonymity indicator. Also, we show that this metric fails to possess desirable generalization properties by constructing an information-preserving embedding of a smaller class of attacks into the wider class for which this metric was proposed. Finally, we show a new general, accurate anonymity metric that does not exhibit these shortcomings.
Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Electrical Engineering and Computer Science.