2.1.2comments Katerina

text/preliminaries/data.tex

@@ -80,19 +80,20 @@ Nonetheless, data distortion at an early stage might prove detrimental to the ov
 The so far consensus is that there is no overall optimal solution among the two designs.
 Most service-providing companies prefer the global scheme, mainly for reasons of better management and control over the data, while several privacy advocates support the local privacy scheme that offers users full control over what and how data are published.
 Although there have been attempts to bridge the gap between them, e.g.,~\cite{bittau2017prochlo}, the global scheme is considerably better explored and implemented~\cite{satyanarayanan2017emergence}.
-For this reason, most of the works in our work span this context.
+For this reason, most of the works in our work span this context. 
+\kat{this last sentence is out of context for the thesis dissertation. Please, explain why you said all that, but w.r.t. the  thesis.}
 
-We distinguish between two publishing modes for private data: \emph{snapshot} and \emph{continuous}.
+We distinguish between two publishing modes for private data: \emph{snapshot} and \emph{continuous}. \kat{I do not like that you present some of the categories as bullets and others as plain text. Be consistent in one format.}
 In snapshot publishing (also appearing as \emph{one-shot} or \emph{one-off} publishing), the system processes and releases a data set at a specific point in time and thereafter is not concerned anymore with the specific data set.
 For example, in Figure~\ref{fig:mode-snapshot} (ignore the privacy-preserving step for the moment) individuals send their data to an LBS provider, considering a specific time point.
 In continuous data publishing the system computes, and publishes augmented or updated versions of one data set in different time points, and without a predefined duration.
-In the context of privacy-preserving data publishing, privacy preservation is tightly coupled with the data processing and publishing stages.
+In the context of privacy-preserving data publishing, privacy preservation is tightly coupled with the data processing and publishing stages. \kat{This can be the introductory sentence of the sub-section, but does not fit here.}
 
-As already discussed in Section~\ref{ch:intro}, in this work we are studying the continuous data publishing mode, and thus we do not include works considering the snapshot paradigm.
-We make this deliberate choice as privacy-preserving continuous data publishing is a more complex problem, receiving more and more attention from the scientific community in the recent years, as shown by the increasing number of publications in this area.
+As already discussed in Section~\ref{ch:intro}, in this thesis we are studying the continuous data publishing mode, and thus we do not include works considering the snapshot paradigm.
+We have made this choice because privacy-preserving continuous data publishing is a more complex problem, receiving more and more attention from the scientific community in the recent years, as shown by the increasing number of publications in this area.\kat{this was a good argumentation but for the survey, not for the thesis..}
 Moreover, the use cases of continuous data publishing abound, with the proliferation of the Internet, sensors, and connected devices, which produce and send to servers huge amounts of continuous personal data in astounding speed.
 
-We identify two main data processing and publishing modes:
+We identify two main data processing and publishing modes: \kat{but so far you have already presented other categories for processing and publishing; why do you say here two main modes?}
 
 \begin{itemize}
   \item \emph{Batch}---data are considered in groups in specific time intervals.