PHOTONAI WIZARD

Design your pipeline

Analysis Name

Specify a name for this analysis.

Project Description

Please provide a short description of your project.

Project Folder

Please give a local directory for your photon analysis

Design Choices

You optimize for mean_absolute_error using random_grid_search.

Optimizer	random_grid_search	n_configurations: 30
Inner Cross Validation Strategy	KFold	n_splits: 3 \|shuffle: True
Outer Cross Validation Strategy	KFold	n_splits: 5 \|shuffle: True
Metrics	mean_squared_error
	mean_absolute_error
	explained_variance
Best Config Metric	mean_absolute_error

Transformers

Your pipeline contains 2 transformer elements specifying 4 hyperparameters.

SimpleImputer	missing_values	np.nan
	strategy	mean
	fill_value	0
PCA	n_components	0.8

Estimators

You choose between 4 learning algorithms with a total of 16 hyperparameters.

RandomForestRegressor	n_estimators	50
	criterion	mse
	max_depth	None
	min_samples_split	2
	min_samples_leaf	1
GaussianProcessRegressor	optimizer	fmin_l_bfgs_b
	n_restarts_optimizer	0
	alpha	1e-10
AdaBoostRegressor	n_estimators	50
	learning_rate	1
	loss	linear
SVR	C	1
	gamma	scale
	max_iter	1000000.0
	kernel	linear
	epsilon	0.1

                        
                            
# Specify how results are going to be saved
# Define hyperpipe
hyperpipe = Hyperpipe('None',
                      project_folder = './results',
                      optimizer="random_grid_search",
                      optimizer_params={'n_configurations': 30},
                      metrics=['mean_squared_error', 'mean_absolute_error', 'explained_variance'],
                      best_config_metric="mean_absolute_error",
                      outer_cv = KFold(n_splits=5,shuffle=True),
                      inner_cv = KFold(n_splits=3, shuffle=True))
        
# Add transformer elements
hyperpipe += PipelineElement("SimpleImputer", hyperparameters={}, 
                             test_disabled=False, missing_values=np.nan, strategy='mean', fill_value=0)
hyperpipe += PipelineElement("PCA", hyperparameters={}, 
                             test_disabled=False, n_components=0.8)
# Add estimator
estimator_switch = Switch('EstimatorSwitch')
estimator_switch += PipelineElement("RandomForestRegressor", hyperparameters={}, n_estimators=50, criterion='mse', max_depth=None, min_samples_split=2, min_samples_leaf=1)
estimator_switch += PipelineElement("GaussianProcessRegressor", hyperparameters={}, optimizer='fmin_l_bfgs_b', n_restarts_optimizer=0, alpha=1e-10)
estimator_switch += PipelineElement("AdaBoostRegressor", hyperparameters={}, n_estimators=50, learning_rate=1, loss='linear')
estimator_switch += PipelineElement("SVR", hyperparameters={}, C=1, gamma='scale', max_iter=1000000.0, kernel='linear', epsilon=0.1)
hyperpipe += estimator_switch

PHOTONAI Wizard