Before revision:  Meanwhile, the defenders aim to reach and capture the evader without any communication between them. The problem formulation uses the actor-critic approach for the defender.
After revision:  Meanwhile, the defenders aim to reach and capture the evader . The inverse solution for pursuers to try and capture has been extensively studied in the literature. However, the problem of evaders escaping from the region is still an open issue. The SR2L employs an actor-critic approach for the defender.