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2.1.2 comments Katerina

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katerinatzo 2021-08-09 12:12:50 +03:00
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tables/continuous.tex
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@ -47,6 +47,6 @@
\bottomrule \bottomrule
\end{tabular}% \end{tabular}%
}% }%
\caption{Continuous data observation of (a)~microdata, and corresponding (b)~statistics at multiple timestamps.} \caption{Continuous data observation \kat{continuous data observation sounds like an action.. better say directly microdata and statistics gathered in consequent timestamps?} of (a)~microdata, and (b)~corresponding statistics at multiple timestamps.}
\label{tab:continuous} \label{tab:continuous}
\end{table} \end{table}

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text/preliminaries/data.tex
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@ -34,7 +34,7 @@ Depending on the span of the observation, we distinguish the following categorie
\end{example} \end{example}
\kat{Why isn't here the presentation of sequential and incremental in bullets?} \kat{Why isn't next the presentation of sequential and incremental in bullets, as for the categories before?}
We further define two sub-categories applicable to both finite and infinite data: \emph{sequential} and \emph{incremental} data; these two subcategories are not exhaustive, i.e.,~not all data sets belong to the one or the other category. We further define two sub-categories applicable to both finite and infinite data: \emph{sequential} and \emph{incremental} data; these two subcategories are not exhaustive, i.e.,~not all data sets belong to the one or the other category.
In sequential data, the value of the observed variable changes, depending on its previous value. In sequential data, the value of the observed variable changes, depending on its previous value.
@ -46,11 +46,11 @@ For example, trajectories can be considered as incremental data, when at each ti
\subsection{Data processing and publishing} \subsection{Data processing and publishing}
\label{subsec:data-publishing} \label{subsec:data-publishing}
We categorize data processing and publishing based on the implemented scheme, as: We categorize data processing and publishing based on the implemented scheme \kat{what does the implemented scheme refer to?}, as:
\begin{itemize} \begin{itemize}
\item \emph{Global}---data are collected, processed and privacy-protected, and then published by a central (trusted) entity, e.g.,~\cite{mcsherry2009privacy, blocki2013differentially, johnson2018towards}. \item \emph{Global}---data are collected, processed and privacy-protected, and then published by a central (trusted) entity, as for instance in~\cite{mcsherry2009privacy, blocki2013differentially, johnson2018towards}.
\item \emph{Local}---data are stored, processed and privacy-protected on the side of data generators before sending them to any intermediate or final entity, e.g.,~\cite{andres2013geo, erlingsson2014rappor, katsomallos2017open}. \item \emph{Local}---data are stored, processed and privacy-protected on the side of data generators before sending them to any intermediate or final entity, as for instance in~\cite{andres2013geo, erlingsson2014rappor, katsomallos2017open}.
\end{itemize} \end{itemize}
\begin{figure}[htp] \begin{figure}[htp]
@ -65,10 +65,11 @@ We categorize data processing and publishing based on the implemented scheme, as
\label{fig:privacy-schemes} \label{fig:privacy-schemes}
\end{figure} \end{figure}
In the case of location data privacy, the existing literature is divided in In the case of location data privacy, the existing literature\kat{do not say literature, but sth related to the data processing and publishing} is divided in
\emph{service-} and \emph{data-}centric methods~\cite{chow2011trajectory}. \emph{service-} and \emph{data-}centric methods~\cite{chow2011trajectory}.
The service-centric methods correspond to scenarios where individuals share their privacy-protected location with a service to get some relevant information (local publishing scheme). The service-centric methods correspond to scenarios where individuals share their privacy-protected location with a service to get some relevant information (local publishing scheme).
The data-centric methods relate to the publishing of user-generated data to data consumers (global publishing scheme). The data-centric methods relate to the publishing of user-generated data to data consumers (global publishing scheme).
\kat{I do not get the data-centric methods.. Can't data-centric be also service centric ? E.g., we publish our data to get back some service? Moreover, what is exactly the link between local and global and service and data centric? One to one ?}
There is a long-standing debate whether the local or the global architectural scheme is more efficient with respect to not only privacy, but also organizational, economic, and security factors~\cite{king1983centralized}. There is a long-standing debate whether the local or the global architectural scheme is more efficient with respect to not only privacy, but also organizational, economic, and security factors~\cite{king1983centralized}.
On the one hand, in the global privacy scheme (Figure~\ref{fig:scheme-global}), the dependence on third-party entities poses the risk of arbitrary privacy leakage from a compromised data publisher. On the one hand, in the global privacy scheme (Figure~\ref{fig:scheme-global}), the dependence on third-party entities poses the risk of arbitrary privacy leakage from a compromised data publisher.