Optimal Algorithms for Finding Connected Components of an Unknown Graph

作者: Weiping Shi , Douglas B. West

DOI: 10.1007/BFB0030827

关键词: k-edge-connected graphModular decompositionStrongly connected componentCombinatoricsConnected componentMathematicsDiscrete mathematicsKosaraju's algorithmVertex (geometry)Tarjan's strongly connected components algorithmIn-place algorithm

摘要: We want to find the connected components of an unknown graph G with a known vertex set V. learn about by sending oracle query S⊂V, and tells us vertices S. use minimum number queries, adaptively, components. The problem is also as interconnect diagnosis wiring networks in VLSI. has n k components, but not part input. present deterministic algorithm using O(min{k,log n}) queries randomized expected O(min{k, log k+log queries. prove matching lower bounds.

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