docstr: Initial values
code: def start_params(self):
      """
      Initial values
      """
      # (optional) Use scale for var_e1 and var_e2 starting values
      params = np.r_[
          self.initial_values["var_e1"],
          self.initial_values["var_e2"],
          self.initial_values["var_w1"],
          self.initial_values["var_w2"],
          self.initial_values["delta1"],
          self.initial_values["delta2"],
          self.initial_values["delta3"],
      ]
      return params
  
imports: from collections import OrderedDict
  import matplotlib.pyplot
  import numpy
  import pandas
  import statsmodels.api
  import pymc3
  import theano
  import theano.tensor
label_desc: Use image node_id 3 for calling the MultipleYsModel obj's underlying member method code with example usage: obj.start_params() and returns: params