edgerepresent.csv ---> CSV格式文件，数据文件：用于表示FSCN，以边的信息表示无向简单图（FSCN）
FSCN： LIU Q, WANG K, LI Y, et al. A novel function-structure concept network construction and analysis method for a smart product design system [J]. Advanced Engineering Informatics, 2022, 51: 101502. https://doi.org/10.1016/j.aei.2021.101502
NodeExtract_RandomWalk.py ---> using CSV file to generate Network file
Degree_distribution.py ---> analyze the degree distribution of nodes of the Network (power-law distribution)
Num_Steps.py ---> Given a node, analyze the number of nodes at different path distances from the specified node. (the shortest path)
nodespathlenthsum02.xlsx ---> The statistical results of nodes according to the shortest path