fixed failing tests for py311 (#456)

* fixed errors with tf and pytorch version updates

Signed-off-by: Amit Sharma <amit_sharma@live.com>

* updated params error

Signed-off-by: Amit Sharma <amit_sharma@live.com>

* updated isort for xgboost files

Signed-off-by: Amit Sharma <amit_sharma@live.com>

* fixed flake8 errors

Signed-off-by: Amit Sharma <amit_sharma@live.com>

---------

Signed-off-by: Amit Sharma <amit_sharma@live.com>

Author: amit-sharma

dice_ml/explainer_interfaces/dice_pytorch.py

@@ -150,7 +150,7 @@ def predict_fn(self, input_instance):
 
     def predict_fn_for_sparsity(self, input_instance):
         """prediction function for sparsity correction"""
-        input_instance = self.model.transformer.transform(input_instance).to_numpy()[0]
+        input_instance = self.model.transformer.transform(input_instance).to_numpy(dtype=np.float64)[0]
         return self.predict_fn(torch.tensor(input_instance).float())
 
     def do_cf_initializations(self, total_CFs, algorithm, features_to_vary):
@@ -418,7 +418,7 @@ def find_counterfactuals(self, query_instance, desired_class, optimizer, learnin
                              init_near_query_instance, tie_random, stopping_threshold, posthoc_sparsity_param,
                              posthoc_sparsity_algorithm, limit_steps_ls):
         """Finds counterfactuals by gradient-descent."""
-        query_instance = self.model.transformer.transform(query_instance).to_numpy()[0]
+        query_instance = self.model.transformer.transform(query_instance).to_numpy(dtype=np.float64)[0]
         self.x1 = torch.tensor(query_instance)
 
         # find the predicted value of query_instance

dice_ml/explainer_interfaces/dice_xgboost.py

@@ -1,5 +1,6 @@
 from dice_ml.explainer_interfaces.explainer_base import ExplainerBase
 
+
 class DiceXGBoost(ExplainerBase):
     def __init__(self, data_interface, model_interface):
         """Initialize with data and model interfaces"""

dice_ml/model_interfaces/xgboost_model.py

@@ -1,9 +1,11 @@
 import xgboost as xgb
-from dice_ml.model_interfaces.base_model import BaseModel
+
 from dice_ml.constants import ModelTypes
+from dice_ml.model_interfaces.base_model import BaseModel
+
 
 class XGBoostModel(BaseModel):
-    
+
     def __init__(self, model=None, model_path='', backend='', func=None, kw_args=None):
         super().__init__(model=model, model_path=model_path, backend='xgboost', func=func, kw_args=kw_args)
         if model is None and model_path:
@@ -27,4 +29,4 @@ def get_output(self, input_instance, model_score=True):
             return self.model.predict(input_instance)
 
     def get_gradient(self):
-        raise NotImplementedError("XGBoost does not support gradient calculation in this context")
+        raise NotImplementedError("XGBoost does not support gradient calculation in this context")

dice_ml/utils/sample_trained_models/adult.h5

@@ -30,7 +30,8 @@ def _initiate_exp_object(self, pyt_exp_object, sample_adultincome_query):
         # query_instance = self.exp.data_interface.prepare_query_instance(
         #     query_instance=sample_adultincome_query, encoding='one-hot')
         # self.query_instance = query_instance.iloc[0].values
-        self.query_instance = self.exp.data_interface.get_ohe_min_max_normalized_data(sample_adultincome_query).iloc[0].values
+        self.query_instance = self.exp.data_interface.get_ohe_min_max_normalized_data(
+                sample_adultincome_query).iloc[0].to_numpy(dtype=np.float64)
 
         self.exp.initialize_CFs(self.query_instance, init_near_query_instance=True)  # initialize CFs
         self.exp.target_cf_class = torch.tensor(1).float()  # set desired class to 1

tests/test_dice_interface/test_dice_pytorch.py

@@ -261,9 +261,6 @@ def test_desired_class(
         ans = exp.generate_counterfactuals(query_instances=sample_custom_query_2,
                                            features_to_vary='all',
                                            total_CFs=2, desired_class=desired_class,
-                                           proximity_weight=0.2, sparsity_weight=0.2,
-                                           diversity_weight=5.0,
-                                           categorical_penalty=0.1,
                                            permitted_range=None)
         if method != 'kdtree':
             assert all(ans.cf_examples_list[0].final_cfs_df[exp.data_interface.outcome_name].values == [desired_class] * 2)
@@ -277,9 +274,6 @@ def test_desired_class(
         ans = new_exp.generate_counterfactuals(query_instances=sample_custom_query_2,
                                                features_to_vary='all',
                                                total_CFs=2, desired_class=desired_class,
-                                               proximity_weight=0.2, sparsity_weight=0.2,
-                                               diversity_weight=5.0,
-                                               categorical_penalty=0.1,
                                                permitted_range=None)
         if method != 'kdtree':
             assert all(ans.cf_examples_list[0].final_cfs_df[new_exp.data_interface.outcome_name].values == [desired_class] * 2)