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- W2963973905 abstract "We consider the classical push broadcast process on a large class of sparse random multigraphs that includes random power law graphs and multigraphs. Our analysis shows that for every $varepsilon>0$, with high probability (w.h.p.) $O(log n)$ rounds are sufficient to inform all but an $varepsilon$-fraction of the vertices (with high probability here denotes with probability $1-o(1)$). It is not hard to see that, e.g., for random power law graphs, the push process needs w.h.p. $n^{Omega(1)}$ rounds to inform all vertices. Fountoulakis, Panagiotou, and Sauerwald proved that for random graphs that have power law degree sequences with $beta>3$, the push-pull protocol needs w.h.p. $Omega(log n)$ rounds to inform all but $varepsilon n$ vertices. Our result demonstrates that for such random graphs, the pull mechanism does not (asymptotically) improve the running time. This is surprising as it is known that on random power law graphs with $2<beta<3$, push-pull is exponentially faster than push." @default.
- W2963973905 created "2019-07-30" @default.
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- W2963973905 date "2017-01-01" @default.
- W2963973905 modified "2023-10-18" @default.
- W2963973905 title "Push is Fast on Sparse Random Graphs" @default.
- W2963973905 doi "https://doi.org/10.1137/140984063" @default.
- W2963973905 hasPublicationYear "2017" @default.
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