def test_hyperparam_space():
p = Pipeline([
AddFeatures([
SomeStep(hyperparams_space=HyperparameterSpace({"n_components": RandInt(1, 5)})),
SomeStep(hyperparams_space=HyperparameterSpace({"n_components": RandInt(1, 5)}))
]),
ModelStacking([
SomeStep(hyperparams_space=HyperparameterSpace({"n_estimators": RandInt(1, 1000)})),
SomeStep(hyperparams_space=HyperparameterSpace({"n_estimators": RandInt(1, 1000)})),
SomeStep(hyperparams_space=HyperparameterSpace({"max_depth": RandInt(1, 100)})),
SomeStep(hyperparams_space=HyperparameterSpace({"max_depth": RandInt(1, 100)}))
],
joiner=NumpyTranspose(),
judge=SomeStep(hyperparams_space=HyperparameterSpace({"alpha": LogUniform(0.1, 10.0)}))
)
])
rvsed = p.get_hyperparams_space()
p.set_hyperparams(rvsed)
hyperparams = p.get_hyperparams()
assert "AddFeatures" in hyperparams.keys()
assert "SomeStep" in hyperparams["AddFeatures"]
assert "n_components" in hyperparams["AddFeatures"]["SomeStep"]
assert "SomeStep1" in hyperparams["AddFeatures"]
assert "n_components" in hyperparams["AddFeatures"]["SomeStep1"]
assert "SomeStep" in hyperparams["ModelStacking"]
assert "n_estimators" in hyperparams["ModelStacking"]["SomeStep"]
assert "SomeStep1" in hyperparams["ModelStacking"]
assert "max_depth" in hyperparams["ModelStacking"]["SomeStep2"]
def test_hyperparam_space():
p = Pipeline([
AddFeatures([
SomeStep(hyperparams_space=HyperparameterSpace(
{"n_components": RandInt(1, 5)})),
SomeStep(hyperparams_space=HyperparameterSpace(
{"n_components": RandInt(1, 5)}))
]),
ModelStacking([
SomeStep(hyperparams_space=HyperparameterSpace(
{"n_estimators": RandInt(1, 1000)})),
SomeStep(hyperparams_space=HyperparameterSpace(
{"n_estimators": RandInt(1, 1000)})),
SomeStep(hyperparams_space=HyperparameterSpace(
{"max_depth": RandInt(1, 100)})),
SomeStep(hyperparams_space=HyperparameterSpace(
{"max_depth": RandInt(1, 100)}))
],
joiner=NumpyTranspose(),
judge=SomeStep(hyperparams_space=HyperparameterSpace(
{"alpha": LogUniform(0.1, 10.0)})))
])
rvsed = p.get_hyperparams_space()
p.set_hyperparams(rvsed)
hyperparams = p.get_hyperparams()
flat_hyperparams_keys = hyperparams.to_flat_dict().keys()
assert 'AddFeatures' in hyperparams
assert 'SomeStep' in hyperparams["AddFeatures"]
assert "n_components" in hyperparams["AddFeatures"]["SomeStep"]
assert 'SomeStep1' in hyperparams["AddFeatures"]
assert "n_components" in hyperparams["AddFeatures"]["SomeStep1"]
assert 'ModelStacking' in hyperparams
assert 'SomeStep' in hyperparams["ModelStacking"]
assert 'n_estimators' in hyperparams["ModelStacking"]["SomeStep"]
assert 'SomeStep1' in hyperparams["ModelStacking"]
assert 'n_estimators' in hyperparams["ModelStacking"]["SomeStep1"]
assert 'SomeStep2' in hyperparams["ModelStacking"]
assert 'max_depth' in hyperparams["ModelStacking"]["SomeStep2"]
assert 'SomeStep3' in hyperparams["ModelStacking"]
assert 'max_depth' in hyperparams["ModelStacking"]["SomeStep3"]
assert 'AddFeatures__SomeStep1__n_components' in flat_hyperparams_keys
assert 'AddFeatures__SomeStep__n_components' in flat_hyperparams_keys
assert 'ModelStacking__SomeStep__n_estimators' in flat_hyperparams_keys
assert 'ModelStacking__SomeStep1__n_estimators' in flat_hyperparams_keys
assert 'ModelStacking__SomeStep2__max_depth' in flat_hyperparams_keys
assert 'ModelStacking__SomeStep3__max_depth' in flat_hyperparams_keys
def main():
boston = load_boston()
X, y = shuffle(boston.data, boston.target, random_state=13)
X = X.astype(np.float32)
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.25,
shuffle=False)
p = Pipeline([
NumpyShapePrinter(),
AddFeatures([
PCA(n_components=2),
FastICA(n_components=2),
]),
NumpyShapePrinter(),
RidgeModelStacking([
GradientBoostingRegressor(),
GradientBoostingRegressor(n_estimators=500),
GradientBoostingRegressor(max_depth=5),
KMeans(),
]),
NumpyShapePrinter(),
])
print("Fitting on train:")
p = p.fit(X_train, y_train)
print("")
print("Transforming train and test:")
y_train_predicted = p.predict(X_train)
y_test_predicted = p.predict(X_test)
print("")
print("Evaluating transformed train:")
score_train = r2_score(y_train_predicted, y_train)
print('R2 regression score:', score_train)
print("")
print("Evaluating transformed test:")
score_test = r2_score(y_test_predicted, y_test)
print('R2 regression score:', score_test)
assert y_train_predicted.shape == (379, )
assert y_test_predicted.shape == (127, )
assert isinstance(score_train, float)
assert isinstance(score_test, float)
return y_train_predicted, y_test_predicted, score_train, score_test
def train_neuraxle(X_train, X_test, y_train, y_test, mtype, common_name_model,
problemtype, classes, default_featurenames, transform_model,
settings, model_session):
# get train and test data
model_name = common_name_model + '.pickle'
files = list()
if mtype in ['classification', 'c']:
print('neuraxle currently does not support classsification...')
elif mtype in ['regression', 'r']:
p = Pipeline([
NumpyShapePrinter(),
AddFeatures([
PCA(n_components=2),
FastICA(n_components=2),
]),
NumpyShapePrinter(),
RidgeModelStacking([
GradientBoostingRegressor(),
GradientBoostingRegressor(n_estimators=500),
GradientBoostingRegressor(max_depth=5),
KMeans(),
]),
NumpyShapePrinter(),
])
# Fitting and evaluating the pipeline.
# X_train data shape: (batch, different_lengths, n_feature_columns)
# y_train data shape: (batch, different_lengths)
pipeline = p.fit(X_train, y_train)
# export pickle file
print('saving model - %s' % (model_name))
f = open(model_name, 'wb')
pickle.dump(pipeline, f)
f.close()
files.append(model_name)
model_dir = os.getcwd()
return model_name, model_dir, files
def test_tape_callback():
expected_tape = ["1", "2", "3", "a", "b", "4"]
tape = TapeCallbackFunction()
p = Pipeline([
Identity(),
TransformCallbackStep(tape.callback, ["1"]),
TransformCallbackStep(tape.callback, ["2"]),
TransformCallbackStep(tape.callback, ["3"]),
AddFeatures([
TransformCallbackStep(tape.callback, ["a"]),
TransformCallbackStep(tape.callback, ["b"]),
]),
TransformCallbackStep(tape.callback, ["4"]),
Identity()
])
p.fit_transform(np.ones((1, 1)))
assert tape.get_name_tape() == expected_tape
boston = load_boston()
X, y = shuffle(boston.data, boston.target, random_state=13)
X = X.astype(np.float32)
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.25,
shuffle=False)
# Note that the hyperparameter spaces are defined here during the pipeline definition, but it could be already set
# within the classes ar their definition if using custom classes, or also it could be defined after declaring the
# pipeline using a flat dict or a nested dict.
p = Pipeline([
AddFeatures([
SKLearnWrapper(PCA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})),
SKLearnWrapper(FastICA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})),
]),
ModelStacking(
[
SKLearnWrapper(
GradientBoostingRegressor(),
HyperparameterSpace({
"n_estimators": RandInt(50, 600),
"max_depth": RandInt(1, 10),
"learning_rate": LogUniform(0.07, 0.7)
})),
SKLearnWrapper(
GradientBoostingRegressor(),
HyperparameterSpace({
"n_estimators": RandInt(50, 600),
from sklearn.utils import shuffle
from neuraxle.pipeline import Pipeline
from neuraxle.steps.numpy import NumpyShapePrinter
from neuraxle.steps.sklearn import SKLearnWrapper, RidgeModelStacking
from neuraxle.union import AddFeatures
boston = load_boston()
X, y = shuffle(boston.data, boston.target, random_state=13)
X = X.astype(np.float32)
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.25, shuffle=False)
p = Pipeline([
NumpyShapePrinter(),
AddFeatures([
SKLearnWrapper(PCA(n_components=2)),
SKLearnWrapper(FastICA(n_components=2)),
]),
NumpyShapePrinter(),
RidgeModelStacking([
SKLearnWrapper(GradientBoostingRegressor()),
SKLearnWrapper(GradientBoostingRegressor(n_estimators=500)),
SKLearnWrapper(GradientBoostingRegressor(max_depth=5)),
SKLearnWrapper(KMeans()),
]),
NumpyShapePrinter(),
])
print("Fitting on train:")
p = p.fit(X_train, y_train)
print("")
def main():
boston = load_boston()
X, y = shuffle(boston.data, boston.target, random_state=13)
X = X.astype(np.float32)
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.25,
shuffle=False)
# Note that the hyperparameter spaces are defined here during the pipeline definition, but it could be already set
# within the classes ar their definition if using custom classes, or also it could be defined after declaring the
# pipeline using a flat dict or a nested dict.
p = Pipeline([
AddFeatures([
SKLearnWrapper(
PCA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})),
SKLearnWrapper(
FastICA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})),
]),
ModelStacking(
[
SKLearnWrapper(
GradientBoostingRegressor(),
HyperparameterSpace({
"n_estimators": RandInt(50, 600),
"max_depth": RandInt(1, 10),
"learning_rate": LogUniform(0.07, 0.7)
})),
SKLearnWrapper(
KMeans(),
HyperparameterSpace({"n_clusters": RandInt(5, 10)})),
],
joiner=NumpyTranspose(),
judge=SKLearnWrapper(
Ridge(),
HyperparameterSpace({
"alpha": LogUniform(0.7, 1.4),
"fit_intercept": Boolean()
})),
)
])
print("Meta-fitting on train:")
p = p.meta_fit(X_train,
y_train,
metastep=RandomSearch(
n_iter=10,
higher_score_is_better=True,
validation_technique=KFoldCrossValidationWrapper(
scoring_function=r2_score, k_fold=10)))
# Here is an alternative way to do it, more "pipeliney":
# p = RandomSearch(
# p,
# n_iter=15,
# higher_score_is_better=True,
# validation_technique=KFoldCrossValidation(scoring_function=r2_score, k_fold=3)
# ).fit(X_train, y_train)
print("")
print("Transforming train and test:")
y_train_predicted = p.predict(X_train)
y_test_predicted = p.predict(X_test)
print("")
print("Evaluating transformed train:")
score_transform = r2_score(y_train_predicted, y_train)
print('R2 regression score:', score_transform)
print("")
print("Evaluating transformed test:")
score_test = r2_score(y_test_predicted, y_test)
print('R2 regression score:', score_test)
def main():
boston = load_boston()
X, y = shuffle(boston.data, boston.target, random_state=13)
X = X.astype(np.float32)
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.25,
shuffle=False)
pipeline = Pipeline([
AddFeatures([
PCA(n_components=2),
FastICA(n_components=2),
]),
RidgeModelStacking([
GradientBoostingRegressor(),
KMeans(),
]),
])
print("Fitting on train:")
pipeline = pipeline.fit(X_train, y_train)
print("")
print("Transforming train and test:")
y_train_predicted = pipeline.transform(X_train)
y_test_predicted = pipeline.transform(X_test)
print("")
print("Evaluating transformed train:")
score = r2_score(y_train_predicted, y_train)
print('R2 regression score:', score)
print("")
print("Evaluating transformed test:")
score = r2_score(y_test_predicted, y_test)
print('R2 regression score:', score)
print("Deploying the application by routing data to the transform method:")
class CustomJSONDecoderFor2DArray(JSONDataBodyDecoder):
"""This is a custom JSON decoder class that precedes the pipeline's transformation."""
def decode(self, data_inputs):
"""
Transform a JSON list object into an np.array object.
:param data_inputs: json object
:return: np array for data inputs
"""
return np.array(data_inputs)
class CustomJSONEncoderOfOutputs(JSONDataResponseEncoder):
"""This is a custom JSON response encoder class for converting the pipeline's transformation outputs."""
def encode(self, data_inputs) -> dict:
"""
Convert predictions to a dict for creating a JSON Response object.
:param data_inputs:
:return:
"""
return {'predictions': list(data_inputs)}
app = FlaskRestApiWrapper(
json_decoder=CustomJSONDecoderFor2DArray(),
wrapped=pipeline,
json_encoder=CustomJSONEncoderOfOutputs()).get_app()
print("Finally, run the app by uncommenting this next line of code:")
# app.run(debug=False, port=5000)
print("You can now call your pipeline over HTTP with a (JSON) REST API.")
# test_predictictions = requests.post(
# url='http://127.0.0.1:5000/',
# json=X_test.tolist()
# )
# print(test_predictictions)
# print(test_predictictions.content)
assert isinstance(app, Flask)
return app
def main(tmpdir):
boston = load_boston()
X, y = shuffle(boston.data, boston.target, random_state=13)
X = X.astype(np.float32)
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.25, shuffle=False)
# Note that the hyperparameter spaces are defined here during the pipeline definition, but it could be already set
# within the classes ar their definition if using custom classes, or also it could be defined after declaring the
# pipeline using a flat dict or a nested dict.
p = Pipeline([
AddFeatures([
SKLearnWrapper(
PCA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})
),
SKLearnWrapper(
FastICA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})
),
]),
ModelStacking([
SKLearnWrapper(
GradientBoostingRegressor(),
HyperparameterSpace({
"n_estimators": RandInt(50, 300), "max_depth": RandInt(1, 4),
"learning_rate": LogUniform(0.07, 0.7)
})
),
SKLearnWrapper(
KMeans(),
HyperparameterSpace({"n_clusters": RandInt(5, 10)})
),
],
joiner=NumpyTranspose(),
judge=SKLearnWrapper(
Ridge(),
HyperparameterSpace({"alpha": LogUniform(0.7, 1.4), "fit_intercept": Boolean()})
),
)
])
print("Meta-fitting on train:")
auto_ml = AutoML(
p,
validation_splitter=ValidationSplitter(0.20),
refit_trial=True,
n_trials=10,
epochs=1, # 1 epoc here due to using sklearn models that just fit once.
cache_folder_when_no_handle=str(tmpdir),
scoring_callback=ScoringCallback(mean_squared_error, higher_score_is_better=False),
callbacks=[MetricCallback('mse', metric_function=mean_squared_error, higher_score_is_better=False)],
hyperparams_repository=InMemoryHyperparamsRepository(cache_folder=str(tmpdir))
)
random_search = auto_ml.fit(X_train, y_train)
p = random_search.get_best_model()
print("")
print("Transforming train and test:")
y_train_predicted = p.predict(X_train)
y_test_predicted = p.predict(X_test)
print("")
print("Evaluating transformed train:")
score_transform = r2_score(y_train_predicted, y_train)
print('R2 regression score:', score_transform)
print("")
print("Evaluating transformed test:")
score_test = r2_score(y_test_predicted, y_test)
print('R2 regression score:', score_test)
def test_deep_learning_pipeline():
# Given
boston = load_boston()
data_inputs, expected_outputs = shuffle(boston.data,
boston.target,
random_state=13)
expected_outputs = expected_outputs.astype(np.float32)
data_inputs = data_inputs.astype(np.float32)
pipeline = Pipeline([
AddFeatures([
SKLearnWrapper(
PCA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})),
SKLearnWrapper(
FastICA(n_components=2),
HyperparameterSpace({"n_components": RandInt(1, 3)})),
]),
ModelStacking(
[
SKLearnWrapper(
GradientBoostingRegressor(),
HyperparameterSpace({
"n_estimators": RandInt(50, 600),
"max_depth": RandInt(1, 10),
"learning_rate": LogUniform(0.07, 0.7)
})),
SKLearnWrapper(
KMeans(n_clusters=7),
HyperparameterSpace({"n_clusters": RandInt(5, 10)})),
],
joiner=NumpyTranspose(),
judge=SKLearnWrapper(
Ridge(),
HyperparameterSpace({
"alpha": LogUniform(0.7, 1.4),
"fit_intercept": Boolean()
})),
)
])
p = DeepLearningPipeline(
pipeline,
validation_size=VALIDATION_SIZE,
batch_size=BATCH_SIZE,
batch_metrics={'mse': to_numpy_metric_wrapper(mean_squared_error)},
shuffle_in_each_epoch_at_train=True,
n_epochs=N_EPOCHS,
epochs_metrics={'mse': to_numpy_metric_wrapper(mean_squared_error)},
scoring_function=to_numpy_metric_wrapper(mean_squared_error),
)
# When
p, outputs = p.fit_transform(data_inputs, expected_outputs)
# Then
batch_mse_train = p.get_batch_metric_train('mse')
epoch_mse_train = p.get_epoch_metric_train('mse')
batch_mse_validation = p.get_batch_metric_validation('mse')
epoch_mse_validation = p.get_epoch_metric_validation('mse')
assert len(epoch_mse_train) == N_EPOCHS
assert len(epoch_mse_validation) == N_EPOCHS
expected_len_batch_mse_train = math.ceil(
(len(data_inputs) / BATCH_SIZE) * (1 - VALIDATION_SIZE)) * N_EPOCHS
expected_len_batch_mse_validation = math.ceil(
(len(data_inputs) / BATCH_SIZE) * VALIDATION_SIZE) * N_EPOCHS
assert len(batch_mse_train) == expected_len_batch_mse_train
assert len(batch_mse_validation) == expected_len_batch_mse_validation
last_batch_mse_validation = batch_mse_validation[-1]
last_batch_mse_train = batch_mse_train[-1]
last_epoch_mse_train = epoch_mse_train[-1]
last_epoch_mse_validation = epoch_mse_validation[-1]
assert last_batch_mse_train < last_batch_mse_validation
assert last_epoch_mse_train < last_epoch_mse_validation
assert last_batch_mse_train < 1
assert last_epoch_mse_train < 1