Sublinear Fully Distributed Partition with Applications
Résumé
We present new efficient deterministic and randomized distributed algorithms for decomposing a graph with $n$ nodes into a disjoint set of connected clusters with radius at most $k-1$ and having $O(n^{1+1/k})$ intercluster edges. We show how to implement our algorithms in the distributed $\mathcal{CONGEST}$ model of computation, i.e., limited message size, which improves the time complexity of previous algorithms~\cite{MS00,Awe85,Peleg00b} from $O(n)$ to $O(n^{1-1/k})$. We apply our algorithms for constructing low stretch graph spanners and network synchronizers in sublinear deterministic time in the $\mathcal{CONGEST}$ model.