Topological Structure of Manufacturing Industry Supply Chain Networks

Algorithm 1

Modified degree-preserving randomizing algorithm for tiered networks.

1 for each tier pair in the network, from to do.

  //

2 foreach link pair between , that is not rewired do.

3  Ramdomly pick two links (a, b) and (c, d) between ;

  / The following condition ensures the uniqueness of.

   the two links selected, in terms of source and.

   destination nodes            /.

4  if then.

5  | Continue to pick another link pair;

  / The following condition prevents creation of.

   multi-links between node pairs       /.

6  if Link (a, d) or link (c, b) already exists then.

7  | Continue to pick another link pair;

8  Remove links (a, b) and (c, d) and create links (a, d) and (c, b);