Add abbreviation attribute to construction machine learning models.

cml/ports/ml_adapter.py

@@ -66,6 +66,7 @@ class ConstructionClusteringMLModel(MachineLearningModel):
     def __init__(self, model):
         self.__model = model
         self._cluster = 2
+        self.abbreviation = self.__model.__class__.__name__[0:3]
 
     def get_labels(self):
         return self.__model.__getattribute__(
@@ -100,6 +101,7 @@ class ReconstructionConceptualMLModel(MachineLearningModel):
     def __init__(self, model):
         self.__model = model
         self.accuracy = None
+        self.subject = model.__class__.__name__
 
     def train(self, data, *args, **kwargs):
         # TODO (dmt): Improve signature of this function!
@@ -117,6 +119,7 @@ class ReconstructionProceduralMLModel(MachineLearningModel):
         self.__model = model
         self.mean_error = None
         self.max_error = None
+        self.subject = model.__class__.__name__
 
     def train(self, data, *args, **kwargs):
         # TODO (dmt): Provide a better way dealing with