Rapid algorithm for identifying backbones in the two-dimensional percolation model

Physics – Condensed Matter – Disordered Systems and Neural Networks

Scientific paper

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5 pages with 5 eps figures. RevTeX 3.1. Clarify the origin of the hull-generating algorithm

Scientific paper

10.1142/S0129183103005509

We present a rapid algorithm for identifying the current-carrying backbone in the percolation model. It applies to general two-dimensional graphs with open boundary conditions. Complemented by the modified Hoshen-Kopelman cluster labeling algorithm, our algorithm identifies dangling parts using their local properties. For planar graphs, it finds the backbone almost four times as fast as Tarjan's depth-first-search algorithm, and uses the memory of the same size as the modified Hoshen-Kopelman algorithm. Comparison with other algorithms for backbone identification is addressed.

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