class_docstr: Calculating Average Precision 
class_docstr_tok: ["Calculating","Average","Precision"]
code: def reset(self):
      self.gt_map_cls = {}  # {scan_id: [(classname, bbox)]}
      self.pred_map_cls = {}  # {scan_id: [(classname, bbox, score)]}
      self.scan_cnt = 0
  
file_path: ARKitScenes/threedod/benchmark_scripts/utils/eval_utils.py
imports: import numpy
  import time
  from .box_utils import box3d_iou
label_desc: Use image node_id 4 for calling the APCalculator obj's underlying member method code with example usage: obj.reset() without return types