class_docstr: Get the corresponding center of the positive class
      
class_docstr_tok: ["Get","the","corresponding","center","of","the","positive","class"]
docstr: Return:
  -------
  positive_center_label: list of int
docstr_tok: ["Return",":","--","--","--","-","positive_center_label",":","list","of","int"]
code: def __call__(self, global_label):
      """
      Return:
      -------
      positive_center_label: list of int
      """
      greater_than = global_label >= self.rank_class_start
      smaller_than = global_label < self.rank_class_end
  
      positive_index = greater_than * smaller_than
      positive_center_label = global_label[positive_index]
  
      return positive_center_label
  
file_path: insightface/recognition/partial_fc/mxnet/memory_samplers.py
imports: import numpy
label_desc: Use image node_id 2 for calling the CenterPositiveClassGet obj's underlying member method code with example usage: obj.__call__(global_label) and returns: positive_center_label