Add missing citations and fix bugs

1 files changed, 10 insertions, 0 deletions

diff --git a/finale/sections/intro.tex b/finale/sections/intro.tex
index 56f31b7..f1f1859 100644
--- a/finale/sections/intro.tex
+++ b/finale/sections/intro.tex
@@ -1,3 +1,12 @@
+Graphs have been extensively studied for their propagative abilities:
+connectivity, routing, gossip algorithms, etc.  A diffusion process taking
+place over a graph provides valuable information about the presence and weights
+of its edges. \emph{Cascades} are a specific type of diffusion processes in
+which a particular infectious behavior spreads over the nodes of the graph.  By
+only observing the ``infection times'' of the nodes in the graph, one might
+hope to recover the underlying graph and the parameters of the cascade model.
+This problem is known in the literature as the \emph{Network Inference problem}.
+
 \begin{itemize}
     \item graph inference: what is the proble? what is an observation,
         contagion model
@@ -8,4 +17,5 @@
                 speedup over passive
         \end{itemize}
 \end{itemize}
+
 \input{sections/related.tex}