def bootstrap(dataset: Dataset, combined_data: CombinedData):
calculations = {}
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
for y in ys:
# for now
assert (len(ys) == 1)
# Main effects
for x in xs:
cat = [k for k, v in x.metadata[categories].items()]
for c in cat:
cat_data = dataset.select(
y.metadata[name], where=[f"{x.metadata[name]} == '{c}'"])
stat = bs.bootstrap(cat_data.to_numpy(),
stat_func=bs_stats.median)
calculations[c] = stat
# import pdb; pdb.set_trace()
# store all the medians & confidence intervals
# return all the medians & CIs
# data.append(cat_data)
return calculations
def greater_than_5_frequency(dataset: Dataset, var_data: CombinedData, alpha):
xs = var_data.get_explanatory_variables()
ys = var_data.get_explained_variables()
if len(xs) == 1:
if len(ys) == 1:
x = xs[0]
y = ys[0]
if x.is_categorical() and y.is_categorical():
# Get the count for each category
x_cat = [k for k,v in x.metadata[categories].items()]
y_cat = [k for k,v in y.metadata[categories].items()]
for xc in x_cat:
for yc in y_cat:
data = dataset.select(y.metadata[name], where=[f"{x.metadata[name]} == '{xc}'", f"{y.metadata[name]} == '{yc}'"])
# Check that the count is at least five for each of the (x,y) group pairs
if (len(data) < 5):
return False
return True
else:
return False
else:
raise ValueError(f"Currently, chi square requires/only supports 1 explained variable, instead received: {len(ys)} -- {ys}")
else:
x0 = xs[0]
x1 = xs[1]
if x0.is_categorical() and x1.is_categorical():
# Get the count for each category
x0_cat = [k for k,v in x0.metadata[categories].items()]
x1_cat = [k for k,v in x1.metadata[categories].items()]
for x0c in x0_cat:
for x1c in x1_cat:
data = dataset.select(x1.metadata[name], where=[f"{x.metadata[name]} == '{xc}'", f"{x1.metadata[name]} == '{x1c}'"])
# Check that the count is at least five for each of the (x,x1) group pairs
if (len(data) < 5):
return False
return True
else:
return False
def chi_square(dataset: Dataset, combined_data: CombinedData):
# Compute the contingency table
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
if len(xs) == 1:
if len(ys) == 1:
x = xs[0]
y = ys[0]
# Get the count for each category
x_cat = [k for k, v in x.metadata[categories].items()]
y_cat = [k for k, v in y.metadata[categories].items()]
contingency_table = []
contingency_table_key = [
] # labels for the order in which data is stored in data array (define above)
for xc in x_cat:
table_row = []
table_row_key = []
for yc in y_cat:
data = dataset.select(y.metadata[name],
where=[
f"{x.metadata[name]} == '{xc}'",
f"{y.metadata[name]} == '{yc}'"
])
table_row.append(len(data))
x_y_key = str(
x.metadata[name]) + ':' + str(xc) + ' by ' + str(
y.metadata[name]) + ':' + str(yc)
table_row_key.append(x_y_key)
assert (len(table_row_key) == len(table_row))
assert (len(table_row) == len(y_cat))
contingency_table.append(table_row)
contingency_table_key.append(table_row_key)
else:
raise ValueError(
f"Currently, chi square requires/only supports 1 explained variable, instead received: {len(ys)} -- {ys}"
)
else:
raise ValueError(
f"Currently, chi square requires/only supports 1 explanatory variable, instead received: {len(xs)} -- {xs}"
)
# chi2, p, dof, ex = chi2_contingency(obs, correction=False)
chi2, p, dof, ex = stats.chi2_contingency(contingency_table,
correction=False)
return ChisquareResult(chi2, p, dof, ex)
def wilcoxon_signed_rank(dataset: Dataset, combined_data: CombinedData):
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
x = xs[0]
y = ys[0]
cat = [k for k, v in x.metadata[categories].items()]
data = []
for c in cat:
cat_data = dataset.select(y.metadata[name],
where=[f"{x.metadata[name]} == '{c}'"])
data.append(cat_data)
return stats.wilcoxon(data[0], data[1])
def friedman(dataset: Dataset, combined_data: CombinedData):
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
assert (len(ys) == 1)
y = ys[0]
data = []
for x in xs:
cat = [k for k, v in x.metadata[categories].items()]
for c in cat:
cat_data = dataset.select(y.metadata[name],
where=[f"{x.metadata[name]} == '{c}'"])
data.append(cat_data)
return stats.friedmanchisquare(*data)
def pointbiserial(dataset: Dataset, combined_data: CombinedData):
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
assert (len(xs) == 1)
assert (len(ys) == 1)
x = xs[0]
y = ys[0]
cat = [k for k, v in x.metadata[categories].items()]
data = []
for c in cat:
cat_data = dataset.select(y.metadata[name],
where=[f"{x.metadata[name]} == '{c}'"])
data.append(cat_data)
return stats.pointbiserialr(data[0], data[1])
def kruskall_wallis(dataset: Dataset, combined_data: CombinedData):
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
assert (len(ys) == 1)
y = ys[0]
data = []
for x in xs:
if x.metadata[categories] is None:
import pdb
pdb.set_trace()
cat = [k for k, v in x.metadata[categories].items()]
for c in cat:
cat_data = dataset.select(y.metadata[name],
where=[f"{x.metadata[name]} == '{c}'"])
data.append(cat_data)
return stats.kruskal(*data)
def fishers_exact(dataset: Dataset, combined_data: CombinedData):
assert (len(combined_data.vars) == 2)
# Compute the contingency table
xs = combined_data.get_explanatory_variables()
ys = combined_data.get_explained_variables()
assert (len(xs) == 1)
assert (len(ys) == 1)
x = xs[0]
y = ys[0]
# Get the count for each category
x_cat = [k for k, v in x.metadata[categories].items()]
y_cat = [k for k, v in y.metadata[categories].items()]
contingency_table = []
contingency_table_key = [
] # labels for the order in which data is stored in data array (define above)
for xc in x_cat:
table_row = []
table_row_key = []
for yc in y_cat:
data = dataset.select(y.metadata[name],
where=[
f"{x.metadata[name]} == '{xc}'",
f"{y.metadata[name]} == '{yc}'"
])
table_row.append(len(data))
x_y_key = str(x.metadata[name]) + ':' + str(xc) + ' by ' + str(
y.metadata[name]) + ':' + str(yc)
table_row_key.append(x_y_key)
assert (len(table_row_key) == len(table_row))
assert (len(table_row) == len(y_cat))
contingency_table.append(table_row)
contingency_table_key.append(table_row_key)
odds_ratio, p_value = stats.fisher_exact(contingency_table,
alternative='two-sided')
return FishersResult(odds_ratio, p_value)
def has_equal_variance(dataset: Dataset, var_data: CombinedData, alpha):
xs = var_data.get_explanatory_variables()
ys = var_data.get_explained_variables()
cat_xs = []
cont_ys = []
grouped_data = []
for x in xs:
if x.is_categorical():
cat_xs.append(x)
for y in ys:
if y.is_continuous():
cont_ys.append(y)
eq_var = (None, None)
if cat_xs and cont_ys:
for y in ys:
for x in xs:
cat = [k for k,v in x.metadata[categories].items()]
for c in cat:
data = dataset.select(y.metadata[name], where=[f"{x.metadata[name]} == '{c}'"])
grouped_data.append(data)
if isinstance(var_data, BivariateData):
# Equal variance
eq_var = compute_eq_variance(grouped_data)
# elif isinstance(var_data, MultivariateData):
# var_data.properties[eq_variance + '::' + x.metadata[name] + ':' + y.metadata[name]] = compute_eq_variance(grouped_data)
else:
raise ValueError(f"var_data_data object is neither BivariateData nor MultivariateData: {type(var_data)}")
if eq_var[0] is None and eq_var[1] is None:
import pdb; pdb.set_trace()
# raise Exception("did not compute variance, this is a bug")
return False
return (eq_var[1] > alpha)
def load_data_from_url(url: str, name: str):
return Dataset.load(url, name)
def load_data(source_name: str, vars: list, pid: str):
return Dataset(source_name, vars, pid)
def get_data(dataset: Dataset, var: VarData):
return dataset.select(var.metadata[name], where=f"{var.metadata[query]}")
def evaluate(dataset: Dataset,
expr: Node,
assumptions: Dict[str, str],
design: Dict[str, str] = None):
if isinstance(expr, Variable):
# dataframe = dataset[expr.name] # I don't know if we want this. We may want to just store query (in metadata?) and
# then use query to get raw data later....(for user, not interpreter?)
metadata = dataset.get_variable_data(expr.name) # (dtype, categories)
# if expr.name == 'strategy':
# import pdb; pdb.set_trace()
metadata['var_name'] = expr.name
metadata['query'] = ''
return VarData(metadata)
elif isinstance(expr, Literal):
data = pd.Series(
[expr.value] * len(dataset.data),
index=dataset.data.index) # Series filled with literal value
# metadata = None # metadata=None means literal
metadata = dict() # metadata=None means literal
metadata['var_name'] = '' # because not a var in the dataset
metadata['query'] = ''
metadata['value'] = expr.value
return VarData(data, metadata)
elif isinstance(expr, Equal):
lhs = evaluate(dataset, expr.lhs)
rhs = evaluate(dataset, expr.rhs)
assert isinstance(lhs, VarData)
assert isinstance(rhs, VarData)
dataframe = lhs.dataframe[lhs.dataframe == rhs.dataframe]
metadata = lhs.metadata
if (isinstance(expr.rhs, Literal)):
metadata[
'query'] = f" == \'{rhs.metadata['value']}\'" # override lhs metadata for query
elif (isinstance(expr.rhs, Variable)):
metadata['query'] = f" == {rhs.metadata['var_name']}"
else:
raise ValueError(f"Not implemented for {rhs}")
return VarData(metadata)
elif isinstance(expr, NotEqual):
rhs = evaluate(dataset, expr.rhs)
lhs = evaluate(dataset, expr.lhs)
assert isinstance(rhs, VarData)
assert isinstance(lhs, VarData)
dataframe = lhs.dataframe[lhs.dataframe != rhs.dataframe]
metadata = lhs.metadata
if (isinstance(expr.rhs, Literal)):
metadata['query'] = " != \'\'" # override lhs metadata for query
elif (isinstance(expr.rhs, Variable)):
metadata['query'] = f" != {rhs.metadata['var_name']}"
else:
raise ValueError(f"Not implemented for {rhs}")
return VarData(metadata)
elif isinstance(expr, LessThan):
lhs = evaluate(dataset, expr.lhs)
rhs = evaluate(dataset, expr.rhs)
assert isinstance(lhs, VarData)
assert isinstance(rhs, VarData)
dataframe = None
metadata = rhs.metadata
if (not lhs.metadata):
raise ValueError(
'Malformed Relation. Filter on Variables must have variable as rhs'
)
elif (lhs.metadata['dtype'] is DataType.NOMINAL):
raise ValueError('Cannot compare nominal values with Less Than')
elif (lhs.metadata['dtype'] is DataType.ORDINAL):
# TODO May want to add a case should RHS and LHS both be variables
# assert (rhs.metadata is None)
comparison = rhs.dataframe.iloc[0]
if (isinstance(comparison, str)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] < categories[comparison]
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
elif (np.issubdtype(comparison, np.integer)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] < comparison
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise ValueError(
f"Cannot compare ORDINAL variables to {type(rhs.dataframe.iloc[0])}"
)
elif (lhs.metadata['dtype'] is DataType.INTERVAL
or lhs.metadata['dtype'] is DataType.RATIO):
comparison = rhs.dataframe.iloc[0]
# Get raw Pandas Series indices for desired data
ids = [i for i, x in enumerate(lhs.dataframe) if x < comparison]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise Exception(f"Invalid Less Than Operation:{lhs} < {rhs}")
if (isinstance(expr.rhs, Literal)):
metadata['query'] = " < \'\'" # override lhs metadata for query
elif (isinstance(expr.rhs, Variable)):
metadata['query'] = f" < {rhs.metadata['var_name']}"
else:
raise ValueError(f"Not implemented for {rhs}")
return VarData(metadata)
elif isinstance(expr, LessThanEqual):
lhs = evaluate(dataset, expr.lhs)
rhs = evaluate(dataset, expr.rhs)
assert isinstance(lhs, VarData)
assert isinstance(rhs, VarData)
dataframe = None
metadata = rhs.metadata
if (not lhs.metadata):
raise ValueError(
'Malformed Relation. Filter on Variables must have variable as rhs'
)
elif (lhs.metadata['dtype'] is DataType.NOMINAL):
raise ValueError('Cannot compare nominal values with Less Than')
elif (lhs.metadata['dtype'] is DataType.ORDINAL):
# TODO May want to add a case should RHS and LHS both be variables
# assert (rhs.metadata is None)
comparison = rhs.dataframe.iloc[0]
if (isinstance(comparison, str)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] <= categories[comparison]
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
elif (np.issubdtype(comparison, np.integer)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] <= comparison
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise ValueError(
f"Cannot compare ORDINAL variables to {type(rhs.dataframe.iloc[0])}"
)
elif (lhs.metadata['dtype'] is DataType.INTERVAL
or lhs.metadata['dtype'] is DataType.RATIO):
comparison = rhs.dataframe.iloc[0]
# Get raw Pandas Series indices for desired data
ids = [i for i, x in enumerate(lhs.dataframe) if x <= comparison]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise Exception(
f"Invalid Less Than Equal Operation:{lhs} <= {rhs}")
if (isinstance(expr.rhs, Literal)):
metadata['query'] = " <= \'\'" # override lhs metadata for query
elif (isinstance(expr.rhs, Variable)):
metadata['query'] = f" <= {rhs.metadata['var_name']}"
else:
raise ValueError(f"Not implemented for {rhs}")
return VarData(metadata)
elif isinstance(expr, GreaterThan):
lhs = evaluate(dataset, expr.lhs)
rhs = evaluate(dataset, expr.rhs)
assert isinstance(lhs, VarData)
assert isinstance(rhs, VarData)
dataframe = None
metadata = rhs.metadata
if (not lhs.metadata):
raise ValueError(
'Malformed Relation. Filter on Variables must have variable as rhs'
)
elif (lhs.metadata['dtype'] is DataType.NOMINAL):
raise ValueError('Cannot compare nominal values with Greater Than')
elif (lhs.metadata['dtype'] is DataType.ORDINAL):
# TODO May want to add a case should RHS and LHS both be variables
# assert (rhs.metadata is None)
comparison = rhs.dataframe.iloc[0]
if (isinstance(comparison, str)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] > categories[comparison]
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
elif (np.issubdtype(comparison, np.integer)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] > comparison
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise ValueError(
f"Cannot compare ORDINAL variables to {type(rhs.dataframe.iloc[0])}"
)
elif (lhs.metadata['dtype'] is DataType.INTERVAL
or lhs.metadata['dtype'] is DataType.RATIO):
comparison = rhs.dataframe.iloc[0]
# Get raw Pandas Series indices for desired data
ids = [i for i, x in enumerate(lhs.dataframe) if x > comparison]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise Exception(f"Invalid Greater Than Operation:{lhs} > {rhs}")
if (isinstance(expr.rhs, Literal)):
metadata['query'] = " > \'\'" # override lhs metadata for query
elif (isinstance(expr.rhs, Variable)):
metadata['query'] = f" > {rhs.metadata['var_name']}"
else:
raise ValueError(f"Not implemented for {rhs}")
return VarData(metadata)
elif isinstance(expr, GreaterThanEqual):
lhs = evaluate(dataset, expr.lhs)
rhs = evaluate(dataset, expr.rhs)
assert isinstance(lhs, VarData)
assert isinstance(rhs, VarData)
dataframe = None
metadata = rhs.metadata
if (not lhs.metadata):
raise ValueError(
'Malformed Relation. Filter on Variables must have variable as rhs'
)
elif (lhs.metadata['dtype'] is DataType.NOMINAL):
raise ValueError(
'Cannot compare nominal values with Greater Than Equal')
elif (lhs.metadata['dtype'] is DataType.ORDINAL):
# TODO May want to add a case should RHS and LHS both be variables
# assert (rhs.metadata is None)
comparison = rhs.dataframe.iloc[0]
if (isinstance(comparison, str)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] >= categories[comparison]
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
elif (np.issubdtype(comparison, np.integer)):
categories = lhs.metadata['categories'] # OrderedDict
# Get raw Pandas Series indices for desired data
ids = [
i for i, x in enumerate(lhs.dataframe)
if categories[x] >= comparison
]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise ValueError(
f"Cannot compare ORDINAL variables to {type(rhs.dataframe.iloc[0])}"
)
elif (lhs.metadata['dtype'] is DataType.INTERVAL
or lhs.metadata['dtype'] is DataType.RATIO):
comparison = rhs.dataframe.iloc[0]
# Get raw Pandas Series indices for desired data
ids = [i for i, x in enumerate(lhs.dataframe) if x >= comparison]
# Get Pandas Series set indices for desired data
p_ids = [lhs.dataframe.index.values[i] for i in ids]
# Create new Pandas Series with only the desired data, using set indices
dataframe = pd.Series(lhs.dataframe, p_ids)
dataframe.index.name = dataset.pid_col_name
else:
raise Exception(
f"Invalid Greater Than Equal Operation:{lhs} >= {rhs}")
if (isinstance(expr.rhs, Literal)):
metadata['query'] = " >= \'\'" # override lhs metadata for query
elif (isinstance(expr.rhs, Variable)):
metadata['query'] = f" >= {rhs.metadata['var_name']}"
else:
raise ValueError(f"Not implemented for {rhs}")
return VarData(metadata)
elif isinstance(expr, Relate):
vars = []
for v in expr.vars:
eval_v = evaluate(dataset, v, design)
if not eval_v:
raise ValueError(
"The variables you are referencing are not defined as variables in your list of variables."
)
assert isinstance(eval_v, VarData)
vars.append(eval_v)
# What kind of study are we analyzing?
study_type = determine_study_type(vars, design)
# Assign roles to variables we are analyzing
vars = assign_roles(vars, study_type, design)
# Compute individual variable properties
# vars = compute_data_properties(dap1ataset, vars)
combined_data = None
# Do we have a Bivariate analysis?
if len(vars) == 2:
combined_data = BivariateData(vars,
study_type,
alpha=float(assumptions['alpha']))
else: # Do we have a Multivariate analysis?
combined_data = MultivariateData(vars,
study_type,
alpha=float(assumptions['alpha']))
# Add paired property
add_paired_property(dataset, combined_data, study_type,
design) # check sample sizes are identical
# Compute between variable level properties
# combined_data = compute_combined_data_properties(dataset, combined_data, study_type, design)
# CEGIS-style synthesis
# Synthesize tests
tests = synthesize_tests(dataset, assumptions, combined_data)
# import pdb; pdb.set_trace()
""""
# verify_properties(properties_and_tests)
# get_tests
# execute_tests
# interpret_tests_results
# print(tests)
for test in tests:
print("\nValid test: %s" % test.name)
print("Properties:")
properties = test.properties()
for prop in properties:
property_identifier = ""
if prop.scope == "test":
property_identifier = test.name + ": " + prop.name
else:
for var_indices in test.properties_for_vars[prop]:
for var_index in var_indices:
property_identifier += f"variable {test.test_vars[var_index].name} "
property_identifier += ": %s" % prop.name
print(property_identifier)
"""
# Execute and store results from each valid test
results = {}
if len(tests) == 0:
tests.append('bootstrap') # Default to bootstrap
for test in tests:
test_result = execute_test(dataset, design, combined_data, test)
results[test] = test_result
if 'bootstrap' in tests:
# import pdb; pdb.set_trace()
pass
# TODO: Calculate effect size for experiments!!
# calculate_effect_size()
# import pdb; pdb.set_trace()
# TODO One-sided test?
if expr.predictions:
# import pdb; pdb.set_trace()
# T-tests: may greater-than test when p/2 < alpha and t > 0, and of a less-than test when p/2 < alpha and t < 0
# --> may want to divide p-value in t-test (before return)
# Add something to the results that they are one-sided vs two-sided tests?
# TODO For f_test/... post hoc comparisons depending on predictions
pass
return ResultData(results)
elif isinstance(expr, Mean):
var = evaluate(dataset, expr.var)
assert isinstance(var, VarData)
# bs.bootstrap(var.dataframe, stat_func=
# bs_stats.mean)
raise Exception('Not implemented Mean')