def setUp(self):
dependent_variable = DatasetVariable(0)
independent_variables = [
DatasetVariable(1),
DatasetVariable(2),
DatasetVariable(3)
]
settings = AbstractSettings({
"differential_evolution.crossover_probability":
1.0,
"differential_evolution.differential_weight":
1.0,
"independent_variable_selection.initial_independent_variables_percentage":
0.25
})
model_population = []
for i in xrange(4):
model = PredictiveModel(settings, ParameterSet({}),
dependent_variable, independent_variables)
independent_variable_selection = IndependentVariableSelection(
settings, dependent_variable, independent_variables)
model_population.append(
OptimizationAlgorithmModelWrapper(
model, independent_variable_selection))
self.model_population = model_population
self.settings = settings
self.potential_independent_variables = independent_variables
self.target_wrapper = model_population[0]
self.de_variable_selection = DEIndependentVariableSelection(
self.settings, self.target_wrapper, self.model_population,
self.potential_independent_variables)
def test_required_parameters(self):
dictionary = {
"param1": {
"type": "range",
"lower_bound": 0.0,
"upper_bound": 1.0,
"value": 0.5
},
"param2": {
"type": "range",
"lower_bound": 0.0,
"upper_bound": 1.0,
"value": 0.5
},
"param3": {
"type": "range",
"lower_bound": 0.0,
"upper_bound": 1.0,
"value": 0.5
}
}
settings = {}
parameter_set = ParameterSet.create_from_dict(dictionary)
dependent_variable = DatasetVariable(0)
independent_variables = [DatasetVariable(1)]
RequiredParametersPredictiveModel(settings, parameter_set,
dependent_variable,
independent_variables)
def test_missing_required_parameters_raises_error(self):
dictionary = {
"param1": {
"type": "range",
"lower_bound": 0.0,
"upper_bound": 1.0,
"value": 0.5
},
"param3": {
"type": "range",
"lower_bound": 0.0,
"upper_bound": 1.0,
"value": 0.5
}
}
settings = {}
parameter_set = ParameterSet.create_from_dict(dictionary)
dependent_variable = DatasetVariable(0)
independent_variables = [DatasetVariable(1)]
with self.assertRaises(AssertionError):
RequiredParametersPredictiveModel(settings, parameter_set,
dependent_variable,
independent_variables)
def setUp(self):
data_matrix = [[1, 2, 3], [2, 3, 4], [5, 6, 7]]
headers = ["column_0", "column_1", "column_2"]
self.header_dataset = Dataset(data_matrix, headers)
self.nonheader_dataset = Dataset(data_matrix)
self.headered_dependent_variable = DatasetVariable("column_0")
self.nonheadered_dependent_variable = DatasetVariable(0)
def test_get_filtered_matrix(self):
variables = [DatasetVariable(0), DatasetVariable("string")]
filtered_matrix = self.dataset.get_filtered_matrix(variables)
self.assertEqual(4, len(filtered_matrix))
for i in xrange(len(filtered_matrix)):
self.assertEqual(2, len(filtered_matrix[i]))
self.assertListEqual([0, "detective"], filtered_matrix[0])
self.assertListEqual([1, "pablo"], filtered_matrix[1])
self.assertListEqual([2, "african"], filtered_matrix[2])
self.assertListEqual([3, "applause"], filtered_matrix[3])
def test_increasing_probability_of_variables(self):
settings = AbstractSettings()
independent_variables = self.header_dataset.get_independent_variables(
self.headered_dependent_variable)
selection = IndependentVariableSelection(
settings, self.headered_dependent_variable, independent_variables)
selection.increase_probability(DatasetVariable("column_1"))
self.assertLess(0.5,
selection.get_probability(DatasetVariable("column_1")))
self.assertGreater(
0.5, selection.get_probability(DatasetVariable("column_2")))
def test_training_decision_tree_on_simple_dataset(self):
settings = AbstractSettings({})
dependent_variable = DatasetVariable(0)
independent_variables = [DatasetVariable(1)]
regression = RandomForestRegression(settings, self.parameter_set, dependent_variable, independent_variables)
data_matrix = [[1,1], [2,2], [3,3], [4,4]]
dataset = Dataset(data_matrix)
trained = regression.train(dataset)
array = trained.predict(dataset)
self.assertEqual(4, len(array))
def test_header_transformation_for_dataset_with_headers(self):
data_matrix = [[1, 2, 3], [4, 5, 6]]
headers = ["h0", "h1", "h2"]
dataset = Dataset(data_matrix, headers)
variable = DatasetVariable(0)
header = self.dataset_transformation.get_transformed_header(
dataset, variable)
self.assertEqual("identitytransformation_h0", header)
variable = DatasetVariable("h2")
header = self.dataset_transformation.get_transformed_header(
dataset, variable)
self.assertEqual("identitytransformation_h2", header)
def test_getting_independent_variables(self):
dependent_variable_index = DatasetVariable(0)
dependent_variable_header = DatasetVariable("number")
independent_variables = self.dataset.get_independent_variables(
dependent_variable_index)
self.assertEqual(2, len(independent_variables))
for variable in independent_variables:
self.assertIn(variable.variable, ["string", "another_string"])
independent_variables = self.dataset.get_independent_variables(
dependent_variable_header)
self.assertEqual(2, len(independent_variables))
for variable in independent_variables:
self.assertIn(variable.variable, ["string", "another_string"])
def setUp(self):
data_matrix = [[1, 2, 3, "a"], [2, 3, 2, "b"], [3, 2, 1, "a"],
[5, 5, 1, "c"], [2, 2, 2, "a"]]
self.dataset = Dataset(data_matrix)
self.settings = AbstractSettings({})
self.parameter_set = ParameterSet({})
self.dependent_variable = DatasetVariable(0)
self.independent_variables = [
DatasetVariable(1),
DatasetVariable(2),
DatasetVariable(3)
]
self.sklearn_model = SklearnModel(self.settings, self.parameter_set,
self.dependent_variable,
self.independent_variables)
def test_header_transformation_for_dataset_without_headers(self):
data_matrix = [[1, 2, 3], [4, 5, 6]]
dataset = Dataset(data_matrix)
variable = DatasetVariable(0)
header = self.dataset_transformation.get_transformed_header(
dataset, variable)
self.assertEqual(None, header)
def test_training_ridge_on_simple_dataset(self):
settings = {}
dependent_variable = DatasetVariable(0)
independent_variables = [DatasetVariable(1)]
regression = LassoRegression(settings, self.parameter_set,
dependent_variable, independent_variables)
data_matrix = [[1, 1], [2, 2], [3, 3], [4, 4]]
dataset = Dataset(data_matrix)
trained = regression.train(dataset)
array = trained.predict(dataset)
self.assertAlmostEqual(1.6, array[0])
self.assertAlmostEqual(2.2, array[1])
self.assertAlmostEqual(2.8, array[2])
self.assertAlmostEqual(3.4, array[3])
def setUp(self):
self.settings = AbstractSettings()
self.initialization = WallaceInitialization(self.settings)
path = os.path.abspath(
os.path.join(os.path.dirname(__file__),
'./sample_regression_data.csv'))
self.dataset = self.initialization.read_filename(path)
self.dependent_variable = DatasetVariable("X1")
def initialize(klass, settings, dependent_variable, dataset_filename):
initialization = WallaceInitialization(settings)
initialization.settings.set("dataset.dataset_filename",
dataset_filename)
dataset = initialization.read_filename(dataset_filename)
if not isinstance(dependent_variable, DatasetVariable):
dependent_variable = DatasetVariable(dependent_variable)
initialization.run_differential_evolution(dataset, dependent_variable)
def test_training_ols_on_simple_dataset(self):
settings = {}
parameter_set = {}
dependent_variable = DatasetVariable(0)
independent_variables = [DatasetVariable(1)]
regression = OLSLinearRegression(settings, parameter_set,
dependent_variable,
independent_variables)
data_matrix = [[1, 1], [2, 2], [3, 3], [4, 4]]
dataset = Dataset(data_matrix)
trained = regression.train(dataset)
array = trained.predict(dataset)
self.assertEqual(1, array[0])
self.assertEqual(2, array[1])
self.assertEqual(3, array[2])
self.assertEqual(4, array[3])
def transform(self, dataset, variables=None):
transformed_columns = []
transformed_headers = []
if variables == None:
variables = [DatasetVariable(i) for i in xrange(dataset.num_cols)]
resulting_datasets = [dataset]
for transformation in self.transformations:
current_dataset = transformation.transform(dataset, variables)
if current_dataset != None:
resulting_datasets.append(current_dataset)
return self.merge_datasets(resulting_datasets)
def setUp(self):
settings = AbstractSettings(
{"optimization_algorithm.population_size": 5})
predictive_model_generator = PredictiveModelGenerator(settings)
predictive_model_generator.add_model_type(FakePredictiveModel)
data_matrix = [[1, 2, 3, 4], [2, 3, 4, 5], [3, 4, 5, 6], [0, 1, 3, 4]]
dataset = Dataset(data_matrix)
dependent_variable = DatasetVariable(0)
optimization_algorithm = OptimizationAlgorithm(
dataset, dependent_variable, settings, predictive_model_generator)
optimization_algorithm.initialize_population()
self.model_population = optimization_algorithm.model_population
def select_independent_variables(self, probabilities=None):
num_variables = self.variable_count_probabilities.choose()
if probabilities == None:
probabilities = self.selection_probabilities
variables = WeightedSelection.sample(probabilities, num_variables)
result = []
for var in variables:
if isinstance(var, DatasetVariable):
result.append(var)
else:
result.append(DatasetVariable(var))
return result
def setUp(self):
dependent_variable = DatasetVariable(0)
independent_variables = [DatasetVariable(1), DatasetVariable(2)]
settings = AbstractSettings({
"differential_evolution.crossover_probability":
1.0,
"differential_evolution.differential_weight":
1.0,
})
model_population = []
for i in xrange(4):
if i == 0:
param1 = 0.2
else:
param1 = 0.3
parameter_values = {
"range_param_0": 0.25 + 0.1 * i,
"range_param_1": param1,
"range_param_2": 0.5,
"category_param_0": "0",
"category_param_1": "0"
}
parameter_set = ParameterSet(parameter_values)
model = FakePredictiveModel(settings, parameter_set,
dependent_variable,
independent_variables)
wrapper = OptimizationAlgorithmModelWrapper(
model, "fake_independent_variable_selection")
model_population.append(wrapper)
self.model_population = model_population
self.validity_check = FakePredictiveModel.validity_check()
self.settings = settings
self.target_wrapper = model_population[0]
self.de_parameter_selection = DEParameterSelection(
settings, self.target_wrapper, model_population,
self.validity_check)
def transform(self, dataset, variables=None):
if variables == None:
variables = [DatasetVariable(i) for i in xrange(dataset.num_cols)]
filtered_matrix = dataset.get_filtered_matrix(variables)
filtered_data_types = dataset.get_filtered_data_types(variables)
num_cols = len(filtered_matrix[0])
transformed_columns = []
for j in xrange(num_cols):
if filtered_data_types[j].data_type in self.valid_data_types():
self.transform_and_append_column(j, filtered_matrix,
transformed_columns)
if len(transformed_columns) > 0:
data_matrix = self.rotate_matrix(transformed_columns)
headers = self.get_transformed_headers(dataset, variables)
return Dataset(data_matrix, headers)
def setUp(self):
data_matrix = [[1, 2, 3, 4], [2, 3, 4, 5], [3, 4, 5, 6], [0, 1, 3, 4]]
dataset = Dataset(data_matrix)
dependent_variable = DatasetVariable(0)
settings = AbstractSettings({
"differential_evolution.crossover_probability":
1.0,
"differential_evolution.differential_weight":
1.0,
"optimization_algorithm.population_size":
5,
"independent_variable_selection.initial_independent_variables_percentage":
1.0
})
predictive_model_generator = PredictiveModelGenerator(settings)
predictive_model_generator.add_model_type(FakePredictiveModel)
self.optimization_algorithm = OptimizationAlgorithm(
dataset, dependent_variable, settings, predictive_model_generator)
