code: def rmse(y_pred, y_true):
      return np.sqrt(mse(y_pred, y_true))
  
file_path: DALEX/python/dalex/dalex/model_explanations/_model_performance/utils.py
imports: import numpy
  import pandas
label_desc: Use image node_id 4 for calling a global function with example usage: rmse(y_pred, y_true) and returns: np