code: def logx_linear(x, a, b):
      """logx linear
  
      Parameters
      ----------
      x : int
      a : float
      b : float
  
      Returns
      -------
      float
          a * np.log(x) + b
      """
      x = np.log(x)
      return a * x + b
  
file_path: nni/nni/algorithms/hpo/curvefitting_assessor/curvefunctions.py
imports: import numpy
label_desc: Use image node_id 4 for calling a global function with example usage: logx_linear(x, a, b) and returns: unknown