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authorThibaut Horel <thibaut.horel@gmail.com>2015-02-06 18:27:55 -0500
committerThibaut Horel <thibaut.horel@gmail.com>2015-02-06 18:27:55 -0500
commit85d2de4ff3588b8059b2bb45ec9444097b996aa7 (patch)
tree06c50a6d889e68a3d7920130a3441bfb4a15d4bf /paper/sections/intro.tex
parent8d7b0d99cfadc38a15b0f63d28d0edd024e8c5f0 (diff)
downloadcascades-85d2de4ff3588b8059b2bb45ec9444097b996aa7.tar.gz
Typos
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@@ -46,7 +46,7 @@ The contributions of this paper are the following:
\item we formulate the Graph Inference problem in the context of
discrete-time influence cascades as a sparse recovery problem for
a specific type of Generalized Linear Model. This formulation notably
- encompases the well-studied Independent Cascade Model and Voter Model.
+ encompasses the well-studied Independent Cascade Model and Voter Model.
\item we give an algorithm which recovers the graph's edges using $\O(s\log
m)$ cascades. Furthermore, we show that our algorithm is also able to
recover the edge weights (the parameters of the influence model),
@@ -55,7 +55,7 @@ The contributions of this paper are the following:
recover is approximately $s$-sparse by proving guarantees in the
\emph{stable recovery} setting.
\item we provide an almost tight lower bound of $\Omega(s\log \frac{m}{s})$
- observations.
+ observations required for sparse recovery.
\end{itemize}
The organization of the paper is as follows: we conclude the introduction by
@@ -69,7 +69,7 @@ Section~\ref{sec:experiments}.
\paragraph{Related Work}
The study of edge prediction in graphs has been an active field of research for
-over a decade \cite{Nowell08} \cite{Leskovec07} \cite{AdarA05}.
+over a decade \cite{Nowell08, Leskovec07, AdarA05}.
\cite{GomezRodriguez:2010} introduced the {\scshape Netinf} algorithm, which
approximates the likelihood of cascades represented as a continuous process.
The algorithm was improved in later work \cite{gomezbalduzzi:2011}, but is not
@@ -82,7 +82,7 @@ analysis depends on a {\it correlation decay} assumption, which limits the
number of new infections at every step. In this setting, they show a lower
bound of the number of cascades needed for support recovery with constant
probability of the order $\Omega(s \log (m/s))$. They also suggest a {\scshape
-Greedy} algorithm, which achieves an ${\cal O}(s \log m)$ guarantee in the case
+Greedy} algorithm, which achieves a ${\cal O}(s \log m)$ guarantee in the case
of tree graphs. The work of \cite{Abrahao:13} studies the same continuous-model framework as
\cite{GomezRodriguez:2010} and obtains an ${\cal O}(s^9 \log^2 s \log m)$ support
recovery algorithm, without the \emph{correlation decay} assumption.
@@ -99,7 +99,7 @@ m)$, by exploiting similar properties of the convex program's KKT conditions.
In contrast, our work studies discrete-time diffusion processes including the
Independent Cascade model under weaker assumptions. Furthermore, we analyze
both the recovery of the graph's edges and the estimation of the model's
-parameters, and achieve closer to optimal bounds.
+parameters, and achieve close to optimal bounds.
\begin{comment}
Their work has the merit of studying a generalization of the discrete-time independent cascade model to continuous functions. Similarly to \cite{Abrahao:13}, they place themselves in