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evaluation: Minor corrections

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Manos Katsomallos 2021-10-15 09:00:22 +02:00
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\section{Summary}
\label{sec:eval-sum}
In this chapter we presented the experimental evaluation of the {\thething} privacy mechanisms and the privacy-preserving {\thething} selection mechanism that we developed in Chapter~\ref{ch:lmdk-prv}, on real and synthetic data sets.
The Adaptive mechanism is the most reliable and best performing mechanism, in terms of overall data utility, with minimal tuning across most of the cases.
In this chapter we presented the experimental evaluation of the {\thething} privacy schemes and the privacy-preserving {\thething} selection scheme that we developed in Chapter~\ref{ch:lmdk-prv}, on real and synthetic data sets.
The Adaptive scheme is the most reliable and best performing scheme, in terms of overall data utility, with minimal tuning across most of the cases.
Skip performs optimally in data sets with a smaller target value range, where approximation fits best.
The {\thething} selection mechanism introduces a reasonable data utility decline to all of our mechanisms however, the Adaptive handles it well and bounds the data utility to higher levels compared to user-level protection.
The {\thething} selection module introduces a reasonable data utility decline to all of our schemes however, the Adaptive handles it well and bounds the data utility to higher levels compared to user-level protection.
% \kat{it would be nice to see it clearly on Figure 5.5. (eg, by including another bar that shows adaptive without landmark selection)}
% \mk{Done.}
In terms of temporal correlation, we observe that under moderate and strong temporal correlation, a greater average regular--{\thething} event distance in a {\thething} distribution causes greater overall privacy loss.
Finally, the contribution of the {\thething} privacy on enhancing the data utility, while preserving $\epsilon$-differential privacy, is demonstrated by the fact that the selected Adaptive mechanism provides better data utility than the user-level mechanism.
Finally, the contribution of the {\thething} privacy on enhancing the data utility, while preserving $\epsilon$-differential privacy, is demonstrated by the fact that the selected Adaptive scheme provides better data utility than the user-level privacy protection.