Symmetric connection problems and their solution by bidirectional search: International Journal of Computer Mathematics: Vol 37, No 3-4

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Abstract

A special search problem, the symmetric connection problem arising in passenger information systems, is defined formally. Bidirectional search is a natural solution strategy for this probiem. A modified ordered search algorithm SCO^∗ is discussed. This algorithm is admissible if the heuristic estimate used is an oplimistic one.

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Symmetric connection problems and their solution by bidirectional search

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