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wea_ondara
2021-02-14 19:31:38 +01:00
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@@ -203,7 +203,28 @@ MathOverflow shows a constant regression before the change, however, average sen
% senitments stable/constant prior to the change
% falling after the change
\section{electronics.stackexchange.com}
On electronics.stackexchange.com the average sentiment and votes decrease continuously prior to the change. At the change date, the regression makes a little jump upward but the trend from before the change continues afterward. Similarly to SuperUser, the average sentiment recovers at about 12 months after the change is introduced and future data will be necessary to determine if the recovery is persistent. The number of 1st questions rises continuously prior to the change and decreases thereafter. The number of follow-up questions falls slightly prior to the change and stabilizes afterward.
\begin{figure}[H]
\begin{subfigure}[t]{0.5\textwidth}
\includegraphics[scale=0.37]{../electronics.stackexchange.com/output/its/average_sentiments-i1.png}
\caption{An interrupted time series analysis of the sentiments of answer to questions created by new contributors on electronics.stackexchange.com}
\label{ele_its}
\end{subfigure}
\begin{subfigure}[t]{0.5\textwidth}
\includegraphics[scale=0.37]{../electronics.stackexchange.com/output/votesits/average_votes-i1.png}
\caption{An interrupted time series analysis of the vote score of questions created by new contributors on electronics.stackexchange.com}
\label{ele_votesits}
\end{subfigure}\\
\begin{subfigure}[c]{0.5\textwidth}
\includegraphics[scale=0.37]{../electronics.stackexchange.com/output/questionits/average_questions-i1.png}
\caption{An interrupted time series analysis of the number of questions created by new contributors on electronics.stackexchange.com}
\label{ele_questionsits}
\end{subfigure}
\end{figure}
% sentiments were falling continuously before and after the change
% recovery started after 12 month after the change
% more data in the future will be required to determine if upward trend in the end continues
\section{SuperUser.com}
SuperUser shows only sightly decreasing average sentiment and vote score up to the change. At the change time the regressions take a dip down and the regression shows a downward trend after the change. Indeed the average sentiments and vote score dipped considerably when the change is introduced. The average sentiment recovers about 13 months later, while the vote score does not recover as well. The number of 1st questions decreases prior to the change and then goes through the roof indicating a huge wave of new users. This drastic influx of new users may explain the crash of the average sentiment and vote score that occurs at the same time. Data available in the future will show if the recovery is persistent.
@@ -224,34 +245,19 @@ SuperUser shows only sightly decreasing average sentiment and vote score up to t
\label{super_questionsits}
\end{subfigure}
\end{figure}
%sentiments fairly stable until the change date
%after change sentiments took a samll dive
% sentiments fairly stable until the change date
% after change sentiments took a samll dive
% recovery after after 13 months to not quite the previous levels
\section{electronics.stackexchange.com}
On electronics.stackexchange.com the average sentiment and votes decrease continuously prior to the change. At the change date, the regression makes a little jump upward but the trend from before the change continues afterward. Similarly to SuperUser, the average sentiment recovers at about 12 months after the change is introduced and future data will be necessary to determine if the recovery is persistent. The number of 1st questions rises continuously prior to the change and decreases thereafter. The number of follow-up questions falls slightly prior to the change and stabilizes afterward.
\begin{figure}[H]
\begin{subfigure}[t]{0.5\textwidth}
\includegraphics[scale=0.37]{../electronics.stackexchange.com/output/its/average_sentiments-i1.png}
\caption{An interrupted time series analysis of the sentiments of answer to questions created by new contributors on electronics.stackexchange.com}
\label{ele_its}
\end{subfigure}
\begin{subfigure}[t]{0.5\textwidth}
\includegraphics[scale=0.37]{../electronics.stackexchange.com/output/votesits/average_votes-i1.png}
\caption{An interrupted time series analysis of the vote score of questions created by new contributors on electronics.stackexchange.com}
\label{ele_votesits}
\end{subfigure}\\
\begin{subfigure}[c]{0.5\textwidth}
\includegraphics[scale=0.37]{../electronics.stackexchange.com/output/questionits/average_questions-i1.png}
\caption{An interrupted time series analysis of the number of questions created by new contributors on electronics.stackexchange.com}
\label{ele_questionsits}
\end{subfigure}
\end{figure}
%sentiments were falling continuously before and after the change
% recovery started after 12 month after the change
% more data in the future will be required to determine if upward trend in the end continues
The 4 previously mentioned communities do not profit from the change. Although some communities improve in one statistic, they do not improve accross the field as shown in the other 6 communities. The 1st question statistic decreases in all 4 communities. With the exception of math.stackexchange.com, all of these communities do not improve in the followup question statistic. In all communities the vote score is on a (worse) downward trend after the change. Also, the sentiment values are decreasing after the change.
When looking at the results of SuperUser, the community stands out and shows interesting results. After about 6 mouths after the change the community the number of 1st questions triple. This level of new questions continues for 7 before the the number go down towards the previous levels. In the same time frame the vote score and sentiment take a significant dive. After that the sentiment returns almost to the previous level while the vote score only increases mildly. However, this sudden increase in 1st questions and therefore users is not related to the change this thesis investivates.
%summary not working
% number of 1st questions does not increase after the change
% followup questions do improve in math.se, in others constant more or less
% vote scores are on a downward trend took
% sentiment scores started decreasing more rapid
% superuser oddball