code: def janoschek(x, a, beta, k, delta):
      """http://www.pisces-conservation.com/growthhelp/janoschek.htm
  
      Parameters
      ----------
      x : int
      a : float
      beta : float
      k : float
      delta : float
  
      Returns
      -------
      float
          a - (a - beta) * np.exp(-k*x**delta)
      """
      return a - (a - beta) * np.exp(-k * x**delta)
  
file_path: nni/nni/algorithms/hpo/curvefitting_assessor/curvefunctions.py
imports: import numpy
label_desc: Use image node_id 12 for calling a global function with example usage: janoschek(x, a, beta, k, delta) and returns: unknown