| //Step 1. Initialization |
| Generalize a population of NP individuals in the search region randomly; |
| Set the numbers of clusters G; Create the external archive EA; initial the current iteration iter = 1; |
| //Step 2. Loop |
| while stopping criteria are not satisfied do |
| Calculate TI according to (26) |
| Decide the number of clusters according to |
| Partition the whole population based on -means clustering |
| For all cluster |
| Compute according to (24) |
| Decide whether some clusters need to be removed according to |
| Select individuals based on non-domination. |
| End for |
| For iter = 1 : TI |
| Update the individuals’ position in each cluster according to (17) |
| Update the external archive and update Num_Update |
| iter = iter + 1; |
| End for |
| Calculate the number of individuals in each cluster needing to be regenerated, according to (27) |
| Generate a certain number of the new individuals in every cluster; |
| End while |
