class_docstr: The main class for modelTuner
  
  Attributes:
      method: the optimization method. Currently only 'gradient_descent'
              is supported.
      loss:   the optimization loss function. Currently only 'mse' (one-day
              ahead prediction) is supported.
code: def cutoff(self, a):
      if a < 0.7:
          return 0.7
  
      if a >= 1:
          return 0.99999
  
      return a
  
file_path: pydlm/pydlm/tuner/dlmTuner.py
imports: from copy import deepcopy
  from numpy import array
  import logging
label_desc: Use image node_id 5 for calling the modelTuner obj's underlying member method code with example usage: obj.cutoff(a) and returns: a, int, int