update for lasso model

alphamind/model/linearmodel.py

@@ -122,7 +122,7 @@ class LassoRegression(ModelBase):
 
     @classmethod
     def load(cls, model_desc: dict):
-        obj_layout = cls()
+        obj_layout = cls(alpha=0.)
         obj_layout.features = model_desc['features']
         obj_layout.trained_time = model_desc['trained_time']
 

alphamind/model/loader.py

@@ -8,6 +8,7 @@ Created on 2017-9-5
 from alphamind.model.modelbase import ModelBase
 from alphamind.model.linearmodel import ConstLinearModel
 from alphamind.model.linearmodel import LinearRegression
+from alphamind.model.linearmodel import LassoRegression
 
 
 def load_model(model_desc: dict) -> ModelBase:
@@ -19,5 +20,7 @@ def load_model(model_desc: dict) -> ModelBase:
         return ConstLinearModel.load(model_desc)
     elif 'LinearRegression' in model_name_parts:
         return LinearRegression.load(model_desc)
+    elif 'LassoRegression' in model_name_parts:
+        return LassoRegression.load(model_desc)
     else:
         raise ValueError('{0} is not currently supported in model loader.'.format(model_name))