code: def forward(self, x):
      out = self.linear(x)
      return out
  
imports: from abc import abstractmethod
  import numpy
  from sklearn.base import BaseEstimator, ClassifierMixin
  from sklearn.utils.validation import check_X_y, assert_all_finite, check_array, check_is_fitted
  from sklearn.utils.multiclass import type_of_target
label_desc: Use image node_id 2 for calling the _LR obj's underlying member method code with example usage: obj.forward(x) and returns: out