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In comprehensive transportation network planning, the precondition of network layout is to analyze the regional collecting and distributing transportation nodes. When dividing nodes into levels with importance degree, in addition to the comprehensive social and economic indexes and total volume of transportation, the characteristics of the volume of the different destinations of passengers and cargoes should be considered. Cluster nodes having the same transport attribute, thus constructing the comprehensive transportation network according to the hiberarchy and the demand property of nodes. Considering the transport orientation characteristics, the improved ant colony optimization algorithm is applied to nodes clustering analysis. The flow chart of processing is given with an example, which will lay a foundation for the formation of the comprehensive transportation network. |
