Difference between revisions of "Open Problems:65"

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In the sketch-based algorithms for connectivity on a graph, the procedure works as follows. Each vertex prepares a $\log^3n$-sized sketch describing its neighborhood, and sends it to a controller. Each node has access to a public shared random source to compute this sketch.  
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In the sketch-based algorithms for connectivity on a graph, the procedure works as follows. Each vertex prepares a $O(\log^3n)$-sized sketch describing its neighborhood, and sends it to a controller. Each node has access to a public shared random source to compute this sketch.  
  
Can we reduce the number of bits required by each node ? To $\log^2 n$ ? To $\log n$ ?
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Can we reduce the number of bits required by each node? Can it be made as small a $O(\log^2 n)$ or $O(\log n)$?

Revision as of 04:18, 4 June 2014

Suggested by Andrew McGregor
Source Bertinoro 2014
Short link https://sublinear.info/65

In the sketch-based algorithms for connectivity on a graph, the procedure works as follows. Each vertex prepares a $O(\log^3n)$-sized sketch describing its neighborhood, and sends it to a controller. Each node has access to a public shared random source to compute this sketch.

Can we reduce the number of bits required by each node? Can it be made as small a $O(\log^2 n)$ or $O(\log n)$?