no code implementations • 8 May 2016 • Akshay Gadde, Eyal En Gad, Salman Avestimehr, Antonio Ortega
Our main result is to show that, under certain conditions, sampling the labels of a vanishingly small fraction of nodes (a number sub-linear in $n$) is sufficient for exact community detection even when $D(a, b)<1$.
no code implementations • 18 May 2016 • Eyal En Gad, Akshay Gadde, A. Salman Avestimehr, Antonio Ortega
A new sampling algorithm is proposed, which sequentially selects the graph nodes to be sampled, based on an aggressive search for the boundary of the signal over the graph.