code: def absolute_percentage_error(
      data: Dict[str, np.ndarray], forecast_type: str
  ) -> np.ndarray:
      return absolute_error(data, forecast_type) / absolute_label(data)
  
file_path: gluonts/src/gluonts/ev/stats.py
imports: from typing import Dict
  import numpy
label_desc: Use image node_id 8 for calling a global function with example usage: absolute_percentage_error(data, forecast_type) and returns: unknown