       000   Mean length of valid paths                             000.0000   000.0000   000.0000   Standard deviation of valid paths                      00.0000    00.0000    00.0000   Shortest valid path                                    000.0000   000.0000   000.0000   Average solution tree size (average number of nodes)   0.0000     0          0  ######   Comparison in performance among the proposed hybrid approach, PSO, and GA for test environment II.                                                           Hybrid     PSO        GA   ------------------------------------------------------ ---------- ---------- ----------   Initial tree size (number of nodes)                    ≤00        00         00   Number of valid paths                                  0000       0000       000   Mean length of valid paths                             000.0000   000.0000   000.0000   Standard deviation of valid paths                      00.0000    00.0000    00.0000   Shortest valid path                                    000.0000   000.0000   000.0000   Average solution tree size (average number of nodes)   0.0000     00         00  ######   Comparison in performance among the proposed hybrid approach, PSO, and GA for test environment III.                                                           Hybrid     PSO        GA   ------------------------------------------------------ ---------- ---------- ----------   Initial tree size (number of nodes)                    ≤00        00         00   Number of valid paths                                  0000       0000       0000   Mean length of valid paths                             000.0000   000.0000   000.0000   Standard deviation of valid paths                      00.0000    00.0000    00.0000   Shortest valid path                                    000.0000   000.0000   000.0000   Average solution tree size (average number of nodes)   0.0000