def test_binary_classification_predict_proba_on_predictor_instance():
np.random.seed(0)
df_titanic_train, df_titanic_test = utils.get_titanic_binary_classification_dataset()
ml_predictor = utils.train_basic_binary_classifier(df_titanic_train)
#
predictions = ml_predictor.predict_proba(df_titanic_test)
predictions = [pred[1] for pred in predictions]
test_score = utils.calculate_brier_score_loss(df_titanic_test.survived, predictions)
# Make sure our score is good, but not unreasonably good
print(test_score)
assert -0.16 < test_score < -0.135
def test_user_input_func_classification():
np.random.seed(0)
df_titanic_train, df_titanic_test = utils.get_titanic_binary_classification_dataset(
)
def age_bucketing(data):
def define_buckets(age):
if age <= 17:
return 'youth'
elif age <= 40:
return 'adult'
elif age <= 60:
return 'adult2'
else:
return 'over_60'
if isinstance(data, dict):
data['age_bucket'] = define_buckets(data['age'])
else:
data['age_bucket'] = data.age.apply(define_buckets)
return data
column_descriptions = {
'survived': 'output',
'sex': 'categorical',
'embarked': 'categorical',
'pclass': 'categorical',
'age_bucket': 'categorical'
}
ml_predictor = Predictor(type_of_estimator='classifier',
column_descriptions=column_descriptions)
ml_predictor.train(df_titanic_train, user_input_func=age_bucketing)
file_name = ml_predictor.save(str(random.random()))
saved_ml_pipeline = load_ml_model(file_name)
os.remove(file_name)
try:
keras_file_name = file_name[:-5] + '_keras_deep_learning_model.h5'
os.remove(keras_file_name)
except:
pass
df_titanic_test_dictionaries = df_titanic_test.to_dict('records')
# 1. make sure the accuracy is the same
predictions = []
for row in df_titanic_test_dictionaries:
predictions.append(saved_ml_pipeline.predict_proba(row)[1])
print('predictions')
print(predictions)
first_score = utils.calculate_brier_score_loss(df_titanic_test.survived,
predictions)
print('first_score')
print(first_score)
# Make sure our score is good, but not unreasonably good
assert -0.16 < first_score < -0.135
# 2. make sure the speed is reasonable (do it a few extra times)
data_length = len(df_titanic_test_dictionaries)
start_time = datetime.datetime.now()
for idx in range(1000):
row_num = idx % data_length
saved_ml_pipeline.predict(df_titanic_test_dictionaries[row_num])
end_time = datetime.datetime.now()
duration = end_time - start_time
print('duration.total_seconds()')
print(duration.total_seconds())
# It's very difficult to set a benchmark for speed that will work across all machines.
# On my 2013 bottom of the line 15" MacBook Pro,
# this runs in about 0.8 seconds for 1000 predictions
# That's about 1 millisecond per prediction
# Assuming we might be running on a test box that's pretty weak, multiply by 3
# Also make sure we're not running unreasonably quickly
assert 0.05 < duration.total_seconds() < 15
# 3. make sure we're not modifying the dictionaries (the score is the same after
# running a few experiments as it is the first time)
predictions = []
for row in df_titanic_test_dictionaries:
predictions.append(saved_ml_pipeline.predict_proba(row)[1])
print('predictions')
print(predictions)
print('df_titanic_test_dictionaries')
print(df_titanic_test_dictionaries)
second_score = utils.calculate_brier_score_loss(df_titanic_test.survived,
predictions)
print('second_score')
print(second_score)
# Make sure our score is good, but not unreasonably good
assert -0.16 < second_score < -0.135
def test_feature_learning_getting_single_predictions_classification(model_name=None):
np.random.seed(0)
df_titanic_train, df_titanic_test = utils.get_titanic_binary_classification_dataset()
column_descriptions = {
'survived': 'output',
'sex': 'categorical',
'embarked': 'categorical',
'pclass': 'categorical'
}
ml_predictor = Predictor(
type_of_estimator='classifier', column_descriptions=column_descriptions)
# NOTE: this is bad practice to pass in our same training set as our fl_data set,
# but we don't have enough data to do it any other way
df_titanic_train, fl_data = train_test_split(df_titanic_train, test_size=0.2)
ml_predictor.train(
df_titanic_train, model_names=model_name, feature_learning=True, fl_data=fl_data)
file_name = ml_predictor.save(str(random.random()))
saved_ml_pipeline = load_ml_model(file_name)
os.remove(file_name)
try:
keras_file_name = file_name[:-5] + '_keras_deep_learning_model.h5'
os.remove(keras_file_name)
except:
pass
df_titanic_test_dictionaries = df_titanic_test.to_dict('records')
# 1. make sure the accuracy is the same
predictions = []
for row in df_titanic_test_dictionaries:
predictions.append(saved_ml_pipeline.predict_proba(row)[1])
print('predictions')
print(predictions)
first_score = utils.calculate_brier_score_loss(df_titanic_test.survived, predictions)
print('first_score')
print(first_score)
# Make sure our score is good, but not unreasonably good
lower_bound = -0.16
if model_name == 'DeepLearningClassifier':
lower_bound = -0.187
assert lower_bound < first_score < -0.133
# 2. make sure the speed is reasonable (do it a few extra times)
data_length = len(df_titanic_test_dictionaries)
start_time = datetime.datetime.now()
for idx in range(1000):
row_num = idx % data_length
saved_ml_pipeline.predict(df_titanic_test_dictionaries[row_num])
end_time = datetime.datetime.now()
duration = end_time - start_time
print('duration.total_seconds()')
print(duration.total_seconds())
# It's very difficult to set a benchmark for speed that will work across all machines.
# On my 2013 bottom of the line 15" MacBook Pro,
# this runs in about 0.8 seconds for 1000 predictions
# That's about 1 millisecond per prediction
# Assuming we might be running on a test box that's pretty weak, multiply by 3
# Also make sure we're not running unreasonably quickly
assert 0.2 < duration.total_seconds() < 15
# 3. make sure we're not modifying the dictionaries
# (the score is the same after running a few experiments as it is the first time)
predictions = []
for row in df_titanic_test_dictionaries:
predictions.append(saved_ml_pipeline.predict_proba(row)[1])
print('predictions')
print(predictions)
print('df_titanic_test_dictionaries')
print(df_titanic_test_dictionaries)
second_score = utils.calculate_brier_score_loss(df_titanic_test.survived, predictions)
print('second_score')
print(second_score)
# Make sure our score is good, but not unreasonably good
assert lower_bound < second_score < -0.133
def getting_single_predictions_classifier_test():
np.random.seed(0)
df_titanic_train, df_titanic_test = utils.get_titanic_binary_classification_dataset(
)
column_descriptions = {
'survived': 'output',
'sex': 'categorical',
'embarked': 'categorical',
'pclass': 'categorical',
'age_bucket': 'categorical'
}
ensemble_config = [{
'model_name': 'LGBMClassifier'
}, {
'model_name': 'RandomForestClassifier'
}]
ml_predictor = Predictor(type_of_estimator='classifier',
column_descriptions=column_descriptions)
ml_predictor.train(df_titanic_train, ensemble_config=ensemble_config)
file_name = ml_predictor.save(str(random.random()))
saved_ml_pipeline = load_ml_model(file_name)
os.remove(file_name)
try:
keras_file_name = file_name[:-5] + '_keras_deep_learning_model.h5'
os.remove(keras_file_name)
except:
pass
df_titanic_test_dictionaries = df_titanic_test.to_dict('records')
# 1. make sure the accuracy is the same
predictions = []
for row in df_titanic_test_dictionaries:
predictions.append(saved_ml_pipeline.predict_proba(row)[1])
print('predictions')
print(predictions)
first_score = utils.calculate_brier_score_loss(df_titanic_test.survived,
predictions)
print('first_score')
print(first_score)
# Make sure our score is good, but not unreasonably good
lower_bound = -0.16
assert -0.15 < first_score < -0.135
# 2. make sure the speed is reasonable (do it a few extra times)
data_length = len(df_titanic_test_dictionaries)
start_time = datetime.datetime.now()
for idx in range(1000):
row_num = idx % data_length
saved_ml_pipeline.predict(df_titanic_test_dictionaries[row_num])
end_time = datetime.datetime.now()
duration = end_time - start_time
print('duration.total_seconds()')
print(duration.total_seconds())
# It's very difficult to set a benchmark for speed that will work across all machines.
# On my 2013 bottom of the line 15" MacBook Pro, this runs in about 0.8 seconds for 1000 predictions
# That's about 1 millisecond per prediction
# Assuming we might be running on a test box that's pretty weak, multiply by 3
# Also make sure we're not running unreasonably quickly
assert 0.2 < duration.total_seconds() < 60
# 3. make sure we're not modifying the dictionaries (the score is the same after running a few experiments as it is the first time)
predictions = []
for row in df_titanic_test_dictionaries:
predictions.append(saved_ml_pipeline.predict_proba(row)[1])
print('predictions')
print(predictions)
print('df_titanic_test_dictionaries')
print(df_titanic_test_dictionaries)
second_score = utils.calculate_brier_score_loss(df_titanic_test.survived,
predictions)
print('second_score')
print(second_score)
# Make sure our score is good, but not unreasonably good
assert -0.15 < second_score < -0.135
