def test_simple_n_minus_one_cv(self):
data = get_mv_pattern(3)
data.init_origids('samples')
self.failUnless( data.nsamples == 120 )
self.failUnless( data.nfeatures == 2 )
self.failUnless(
(data.sa.targets == \
[0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0] * 6).all())
self.failUnless(
(data.sa.chunks == \
[k for k in range(1, 7) for i in range(20)]).all())
assert_equal(len(np.unique(data.sa.origids)), data.nsamples)
transerror = TransferError(sample_clf_nl)
cv = CrossValidatedTransferError(
transerror,
NFoldSplitter(cvtype=1),
enable_ca=['confusion', 'training_confusion',
'samples_error'])
results = cv(data)
self.failUnless((results.samples < 0.2).all() and (results.samples >= 0.0).all())
# TODO: test accessibility of {training_,}confusion{,s} of
# CrossValidatedTransferError
self.failUnless(isinstance(cv.ca.samples_error, dict))
self.failUnless(len(cv.ca.samples_error) == data.nsamples)
# one value for each origid
assert_array_equal(sorted(cv.ca.samples_error.keys()),
sorted(data.sa.origids))
for k, v in cv.ca.samples_error.iteritems():
self.failUnless(len(v) == 1)
def test_simple_n_minus_one_cv(self):
data = get_mv_pattern(3)
data.init_origids('samples')
self.failUnless(data.nsamples == 120)
self.failUnless(data.nfeatures == 2)
self.failUnless(
(data.sa.targets == \
[0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0] * 6).all())
self.failUnless(
(data.sa.chunks == \
[k for k in range(1, 7) for i in range(20)]).all())
assert_equal(len(np.unique(data.sa.origids)), data.nsamples)
transerror = TransferError(sample_clf_nl)
cv = CrossValidatedTransferError(
transerror,
NFoldSplitter(cvtype=1),
enable_ca=['confusion', 'training_confusion', 'samples_error'])
results = cv(data)
self.failUnless((results.samples < 0.2).all()
and (results.samples >= 0.0).all())
# TODO: test accessibility of {training_,}confusion{,s} of
# CrossValidatedTransferError
self.failUnless(isinstance(cv.ca.samples_error, dict))
self.failUnless(len(cv.ca.samples_error) == data.nsamples)
# one value for each origid
assert_array_equal(sorted(cv.ca.samples_error.keys()),
sorted(data.sa.origids))
for k, v in cv.ca.samples_error.iteritems():
self.failUnless(len(v) == 1)
def test_harvesting(self):
# get a dataset with a very high SNR
data = get_mv_pattern(10)
# do crossval with default errorfx and 'mean' combiner
transerror = TransferError(clfswh['linear'][0])
cv = CrossValidatedTransferError(
transerror,
NFoldSplitter(cvtype=1),
harvest_attribs=['transerror.clf.ca.training_time'])
result = cv(data)
ok_(cv.ca.harvested.has_key('transerror.clf.ca.training_time'))
assert_equal(len(cv.ca.harvested['transerror.clf.ca.training_time']),
len(data.UC))
def test_harvesting(self):
# get a dataset with a very high SNR
data = get_mv_pattern(10)
# do crossval with default errorfx and 'mean' combiner
transerror = TransferError(clfswh['linear'][0])
cv = CrossValidatedTransferError(
transerror,
NFoldSplitter(cvtype=1),
harvest_attribs=['transerror.clf.ca.training_time'])
result = cv(data)
ok_(cv.ca.harvested.has_key('transerror.clf.ca.training_time'))
assert_equal(len(cv.ca.harvested['transerror.clf.ca.training_time']),
len(data.UC))
def test_simple_n_minus_one_cv(self):
data = get_mv_pattern(3)
data.init_origids('samples')
self.failUnless( data.nsamples == 120 )
self.failUnless( data.nfeatures == 2 )
self.failUnless(
(data.sa.targets == \
[0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0] * 6).all())
self.failUnless(
(data.sa.chunks == \
[k for k in range(1, 7) for i in range(20)]).all())
assert_equal(len(np.unique(data.sa.origids)), data.nsamples)
cv = CrossValidation(sample_clf_nl, NFoldPartitioner(),
enable_ca=['stats', 'training_stats'])
# 'samples_error'])
results = cv(data)
self.failUnless((results.samples < 0.2).all() and (results.samples >= 0.0).all())
def test_noise_classification(self):
# get a dataset with a very high SNR
data = get_mv_pattern(10)
# do crossval with default errorfx and 'mean' combiner
transerror = TransferError(sample_clf_nl)
cv = CrossValidatedTransferError(transerror, NFoldSplitter(cvtype=1))
# must return a scalar value
result = cv(data)
# must be perfect
self.failUnless((result.samples < 0.05).all())
# do crossval with permuted regressors
cv = CrossValidatedTransferError(transerror,
NFoldSplitter(cvtype=1, permute=True, nrunspersplit=10) )
results = cv(data)
# must be at chance level
pmean = np.array(results).mean()
self.failUnless( pmean < 0.58 and pmean > 0.42 )
def test_noise_classification(self):
# get a dataset with a very high SNR
data = get_mv_pattern(10)
# do crossval with default errorfx and 'mean' combiner
cv = CrossValidation(sample_clf_nl, NFoldPartitioner())
# must return a scalar value
result = cv(data)
# must be perfect
self.failUnless((result.samples < 0.05).all())
# do crossval with permuted regressors
cv = CrossValidation(sample_clf_nl,
ChainNode([NFoldPartitioner(),
AttributePermutator('targets', count=10)],
space='partitions'))
results = cv(data)
# must be at chance level
pmean = np.array(results).mean()
self.failUnless( pmean < 0.58 and pmean > 0.42 )
def test_noise_classification(self):
# get a dataset with a very high SNR
data = get_mv_pattern(10)
# do crossval with default errorfx and 'mean' combiner
transerror = TransferError(sample_clf_nl)
cv = CrossValidatedTransferError(transerror, NFoldSplitter(cvtype=1))
# must return a scalar value
result = cv(data)
# must be perfect
self.failUnless((result.samples < 0.05).all())
# do crossval with permuted regressors
cv = CrossValidatedTransferError(
transerror,
NFoldSplitter(cvtype=1, permute_attr='targets', nrunspersplit=10))
results = cv(data)
# must be at chance level
pmean = np.array(results).mean()
self.failUnless(pmean < 0.58 and pmean > 0.42)
