30 lines
2.4 KiB
TeX
30 lines
2.4 KiB
TeX
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\chapter{Related work}
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\label{ch:related}
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Depending on the intended use, owners may share their data either as a whole (Microdata -- Section~\ref{sec:microdata}), or as computed statistics thereof (Statistical Data -- Section~\ref{sec:statistical}).
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This is the basic division line that we set in this section.
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Table~\ref{tab:related} summarizes all the works reviewed in this thesis, and provides a guide for the interested reader on some of the listed variables.
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We proceed by identifying some common variables in the works of both categories, which are listed in Table~\ref{tab:related}.
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There are three main columns, concerning the:
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\begin{itemize}
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\item \textbf{Data} --- The first part of Table~\ref{tab:related} considers the nature of the input/output data of the algorithms in its first column.
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We identify here the considered kind of data from the set of categories defined in Section~\ref{subsec:data-categories}, i.e.,~stream, sequential, or time series.
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Particularly, we outline the cases where spatial data are explicitly considered; nevertheless, all other algorithms could be equally applied on location data as well.
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The second column of the Data part is about the model (batch or stream) of the privacy preserving process and the aggregation process, where applicable.
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The third column displays the publishing scheme, as one of the defined schemes in Section~\ref{subsec:data-publishing} one shot, continuous, sequential, or incremental.
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\item \textbf{Protection} --- The second part of Table~\ref{tab:related} contains four columns, namely the attack scenario, the base protection method, the acquired protection level, and the distortion applied.
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The different attack scenarios are described in Section~\ref{subsec:privacy-attacks}, whereas the base protection methods along with the applied distortion method are in Section~\ref{subsec:privacy-seminal}.
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The possible protection levels are: event, user, and w-event (see Section~\ref{subsec:privacy-levels}).
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\item \textbf{Correlations} --- The final part of Table~\ref{tab:related} is dedicated to correlations, which is an attack model not taken into consideration by all the works.
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Still, the continuous publication of data inevitably creates correlations even when they are not evident in a standalone data set.
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The different kinds of correlations can be found in Section~\ref{subsec:privacy-attacks}.
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\end{itemize}
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\input{graphics/table-related}
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\input{microdata}
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\input{statistical}
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\input{discussion}
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