PROBLEM TO BE SOLVED: To provide a method and a program capable of evaluating a network.SOLUTION: In a network, branches are connected with each other at nodes P0-P8 to form a plurality of transport paths extending from an entry to an exit. A plurality of transport paths (f1-f6) extending from an entry to an exit are searched for as paths through which an electric current flows from the entry to the exit, provided that each branch in the transport paths are assumed to be a resistor, an electric potential difference is given between the entry and the exit, the electric potential of each node is calculated, and the electric current flows from a node with a high potential toward a node with a low potential. Network characteristics are evaluated based on the plurality of transport paths obtained.SELECTED DRAWING: Figure 4
