Revert "Update summit/strategies/base.py (#257)"

This reverts commit 820d9c6.

summit/strategies/base.py

@@ -96,7 +96,7 @@ def transform_inputs_outputs(self, ds: DataSet, **kwargs):
         self.input_means, self.input_stds = {}, {}
         self.output_means, self.output_stds = {}, {}
         self.encoders = {}
-for variable in self.transform_domain.input_variables:
+        for variable in self.domain.input_variables:
             if (
                 isinstance(variable, CategoricalVariable)
                 and categorical_method == "descriptors"
@@ -262,7 +262,7 @@ def un_transform(self, ds, **kwargs):
 
         # Determine input and output columns in dataset
         new_ds = ds.copy()
-for i, variable in enumerate(self.transform_domain.input_variables):
+        for i, variable in enumerate(self.domain.input_variables):
             # Categorical variables with descriptors
             if (
                 isinstance(variable, CategoricalVariable)
@@ -1200,4 +1200,4 @@ def _design_distances(design_point, candidate_matrix):
     squared = np.power(diff, 2)
     summed = np.sum(squared, axis=1)
     root_square = np.sqrt(summed)
-    return root_square
+    return root_square