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A simple algorithm for graph reconstruction

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Résumé

How efficiently can we find an unknown graph using distance queries between its vertices? We assume that the unknown graph is connected, unweighted, and has bounded degree. The goal is to find every edge in the graph. This problem admits a reconstruction algorithm based on multi-phase Voronoi-cell decomposition and using (Figure presented.) distance queries. In our work, we analyze a simple reconstruction algorithm. We show that, on random (Figure presented.) -regular graphs, our algorithm uses (Figure presented.) distance queries. As by-products, with high probability, we can reconstruct those graphs using (Figure presented.) queries to an all-distances oracle or (Figure presented.) queries to a betweenness oracle, and we bound the metric dimension of those graphs by (Figure presented.). Our reconstruction algorithm has a very simple structure, and is highly parallelizable. On general graphs of bounded degree, our reconstruction algorithm has subquadratic query complexity.

langue originaleAnglais
Pages (de - à)512-532
Nombre de pages21
journalRandom Structures and Algorithms
Volume63
Numéro de publication2
Les DOIs
étatPublié - 1 sept. 2023

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