code: def norm_thresholding(x0, value):
      s = append_dims(
          x0.pow(2).flatten(1).mean(1).sqrt().clamp(min=value), x0.ndim
      )
      return x0 * (value / s)
  
imports: import torch
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: norm_thresholding(x0, value) and returns: unknown