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\section{User Interaction with the System}
The system has one main way to be used as defined in \autoref{tab:MainUseCase}.
\begin{figure}
\centering
\includegraphics[width=1\textwidth]{./figures/bpmn_configuration_process_with_continious_recommendation.pdf}
\caption{A bpmn diagram of the configuration process.}
\label{fig:ConfigurationProcess}
\end{figure}
\begin{table}
\begin{center}
\begin{tabularx}{\columnwidth}{l|X}
\multicolumn{2}{c}{Main System Usage} \\
\hline
Preconditions &
\begin{itemize}
\item The configurator is opened with the same session on each of the group member's machines
\item The configuration is in an unfinished state (this state is a consensus state)
\end{itemize} \\
\hline
Postcondition &
\begin{itemize}
\item All users have entered their preferences for each attribute explicitly.
\item The system gives a recommendation based on all preferences and the unfinished configuration state
\end{itemize} \\
\hline
Basic Flow &
\begin{enumerate}
\item A user indicates a preference for an attribute
\item The system generates a recommendation (based on preferences and configuration status)
\item If not all users have given their preferences go to step 1.
\end{enumerate} \\
\hline
\end{tabularx}
\caption{A description of the main way users will interact with the system}
\label{tab:MainUseCase}
\end{center}
\end{table}
\FloatBarrier
\section{Solution Objectives}
Given an unfinished configuration and preferences of all group members rate a finished configuration on how well "similar" it reflects the configuration and preferences.
Use this to choose the best finished configuration out of a list to recommend.
\subsection{Generating a Recommendation}
Hereby the idea is there is a database of complete configurations (possibly historic from other groups or automatically generated or both).
Now the recommendation procedure looks as follows:
\begin{enumerate}
\item Assign a score to each stored configuration according to $$score_{group}(\overline{configurationState},\ \overline{preferences}, \ configurationInStore)$$
\item Chose the configuration with the highest score as recommendation.
\end{enumerate}
\section{Benefits}
The benefits of this approach are, that the need for a group to communicate is reduced. Each user gives their own preferences and the group will get a recommendation based on that. This allows to reduce problems with communication of preferences and eliminates misunderstandings.