\chapter{Discussion}
    \section{Number of Synergies}
    \label{dis:noSyn}
        As shown in section~\ref{res:noSyn} 2 and 4 Synergies are good values for Autoencoder since the slope of the mean prediction is steeper before than after. Another neuron doesn't improve the result as much as the last.\\
        For PCA and NNMF this value is reached at 3 as \ref{fig:noSyn} shows.