notation table and OMP algo

reports/bolsonaro.tex

@@ -28,6 +28,7 @@
 \maketitle
 
 \section{Introduction}
+introduire le pb et les motivation ...
 \subsection{Notation}
 
 Let $ X \in \mathbb{R}^{n \times d}$ be the matrix data and $Y \in \mathbb{R}^{n}$ be the labels vector associated to the matrix $X$, where for each $i$, $\textbf{x}_i \in \cal{X} \subseteq \mathbb{R}^d$ and $y_i \in {\cal Y} \subseteq \mathbb{R}$. \\