code: def swarm(self, idx_individual):
      # 聚群行为
      idx_individual_in_vision = self.find_individual_in_vision(
          idx_individual
      )
      num_idx_individual_in_vision = len(idx_individual_in_vision)
      if num_idx_individual_in_vision > 0:
          individual_in_vision = self.X[idx_individual_in_vision, :]
          center_individual_in_vision = individual_in_vision.mean(
              axis=0
          )
          center_y_in_vision = self.func(center_individual_in_vision)
          if (
              center_y_in_vision * num_idx_individual_in_vision
              < self.delta * self.Y[idx_individual]
          ):
              self.move_to_target(
                  idx_individual, center_individual_in_vision
              )
              return None
      self.prey(idx_individual)
  
file_path: scikit-opt/sko/AFSA.py
imports: import numpy
  from scipy import spatial
label_desc: Use image node_id 6 for calling the AFSA obj's underlying member method code with example usage: obj.swarm(idx_individual) and returns: None