def test_auto_dtype(self):
x = np.arange(80).reshape((40, 2))
y = tuple(range(40))
z = list(range(40))
x_rdd = self.sc.parallelize(x, 4)
y_rdd = self.sc.parallelize(y, 4)
z_rdd = self.sc.parallelize(z, 4)
expected = (np.arange(20).reshape(10, 2), tuple(range(10)),
list(range(10)))
rdd = DictRDD([x_rdd, y_rdd, z_rdd])
assert_tuple_equal(rdd.first(), expected)
assert_equal(rdd.dtype, (np.ndarray, tuple, tuple))
assert_true(check_rdd_dtype(rdd, {0: np.ndarray, 1: tuple, 2: tuple}))
rdd = DictRDD([x_rdd, y_rdd, z_rdd], columns=('x', 'y', 'z'))
assert_tuple_equal(rdd.first(), expected)
assert_equal(rdd.dtype, (np.ndarray, tuple, tuple))
assert_true(
check_rdd_dtype(rdd, {
'x': np.ndarray,
'y': tuple,
'z': tuple
}))
def test_same_prediction(self):
X, y, Z = self.make_regression(1, 100000)
local = LinearRegression()
dist = SparkLinearRegression()
y_local = local.fit(X, y).predict(X)
y_dist = dist.fit(Z).predict(Z[:, 'X'])
assert_true(check_rdd_dtype(y_dist, (np.ndarray, )))
assert_array_almost_equal(y_local, y_dist.toarray())
def test_same_output_sparse(self):
X, X_rdd = self.make_dict_dataset()
local = DictVectorizer(sparse=True)
dist = SparkDictVectorizer(sparse=True)
result_local = local.fit_transform(X)
result_dist = dist.fit_transform(X_rdd)
assert_true(check_rdd_dtype(result_dist, (sp.spmatrix, )))
assert_equal(local.vocabulary_, dist.vocabulary_)
assert_array_equal(result_local.toarray(), result_dist.toarray())
def test_same_output_sparse(self):
X, X_rdd = self.make_dict_dataset()
local = DictVectorizer(sparse=True)
dist = SparkDictVectorizer(sparse=True)
result_local = local.fit_transform(X)
result_dist = dist.fit_transform(X_rdd)
assert_true(check_rdd_dtype(result_dist, (sp.spmatrix,)))
assert_equal(local.vocabulary_, dist.vocabulary_)
assert_array_equal(result_local.toarray(), result_dist.toarray())
def test_same_prediction(self):
X, y, Z = self.make_classification(4, 100000, nonnegative=True)
local = MultinomialNB()
dist = SparkMultinomialNB()
y_local = local.fit(X, y).predict(X)
y_dist = dist.fit(Z, classes=np.unique(y)).predict(Z[:, 'X'])
assert_true(check_rdd_dtype(y_dist, (np.ndarray,)))
assert_array_almost_equal(y_local, y_dist.toarray())
def test_same_prediction(self):
X, y, Z = self.make_regression(1, 100000)
local = LinearRegression()
dist = SparkLinearRegression()
y_local = local.fit(X, y).predict(X)
y_dist = dist.fit(Z).predict(Z[:, 'X'])
assert_true(check_rdd_dtype(y_dist, (np.ndarray,)))
assert_array_almost_equal(y_local, y_dist.toarray())
def test_block_rdd_dict(self):
n_partitions = 3
n_samples = 57
dicts = [{'a': i, 'b': float(i)**2} for i in range(n_samples)]
data = self.sc.parallelize(dicts, n_partitions)
block_data_5 = block(data, bsize=5)
blocks = block_data_5.collect()
assert_true(all(len(b) <= 5 for b in blocks))
assert_array_almost_equal(blocks[0][0], np.arange(5))
assert_array_almost_equal(blocks[0][1],
np.arange(5, dtype=np.float)**2)
def test_block_rdd_dict(self):
n_partitions = 3
n_samples = 57
dicts = [{'a': i, 'b': float(i) ** 2} for i in range(n_samples)]
data = self.sc.parallelize(dicts, n_partitions)
block_data_5 = block(data, bsize=5)
blocks = block_data_5.collect()
assert_true(all(len(b) <= 5 for b in blocks))
assert_array_almost_equal(blocks[0][0], np.arange(5))
assert_array_almost_equal(blocks[0][1],
np.arange(5, dtype=np.float) ** 2)
def test_same_transform_result(self):
X, y, Z_rdd = self.make_classification(4, 1000, -1)
X_rdd = Z_rdd[:, 'X']
local = TfidfTransformer()
dist = SparkTfidfTransformer()
Z_local = local.fit_transform(X)
Z_dist = dist.fit_transform(X_rdd)
assert_true(check_rdd_dtype(Z_dist, sp.spmatrix))
assert_array_almost_equal(Z_local.toarray(), Z_dist.toarray())
def test_sparse_matrix(self):
n_partitions = 10
n_samples = 100
sparse_row = sp.csr_matrix([[0, 0, 1, 0, 1]])
data = self.sc.parallelize([sparse_row for i in range(n_samples)],
n_partitions)
blocked_data = block(data)
assert_true(sp.issparse(blocked_data.first()))
expected_block = sp.vstack([sparse_row] * 10)
assert_array_almost_equal(expected_block.toarray(),
blocked_data.first().toarray())
def test_sparse_matrix(self):
n_partitions = 10
n_samples = 100
sparse_row = sp.csr_matrix([[0, 0, 1, 0, 1]])
data = self.sc.parallelize([sparse_row for i in range(n_samples)],
n_partitions)
blocked_data = block(data)
assert_true(sp.issparse(blocked_data.first()))
expected_block = sp.vstack([sparse_row] * 10)
assert_array_almost_equal(expected_block.toarray(),
blocked_data.first().toarray())
def test_array_bsize(self):
n_partitions = 10
n_samples = 107
data = self.sc.parallelize([np.array([1]) for i in range(n_samples)],
n_partitions)
block_data_5 = block(data, bsize=5)
blocks = block_data_5.collect()
assert_true(all(len(b) <= 5 for b in blocks))
block_data_10 = block(data, bsize=10)
blocks = block_data_10.collect()
assert_true(all(len(b) <= 10 for b in blocks))
def test_array_bsize(self):
n_partitions = 10
n_samples = 107
data = self.sc.parallelize([np.array([1]) for i in range(n_samples)],
n_partitions)
block_data_5 = block(data, bsize=5)
blocks = block_data_5.collect()
assert_true(all(len(b) <= 5 for b in blocks))
block_data_10 = block(data, bsize=10)
blocks = block_data_10.collect()
assert_true(all(len(b) <= 10 for b in blocks))
def test_same_transform_result(self):
X, y, Z_rdd = self.make_classification(4, 1000, -1)
X_rdd = Z_rdd[:, 'X']
local = TfidfTransformer()
dist = SparkTfidfTransformer()
Z_local = local.fit_transform(X)
Z_dist = dist.fit_transform(X_rdd)
assert_true(check_rdd_dtype(Z_dist, sp.spmatrix))
assert_array_almost_equal(Z_local.toarray(),
Z_dist.toarray())
def test_transform_with_dtype(self):
data1 = np.arange(400).reshape((100, 4))
data2 = np.arange(200).reshape((100, 2))
rdd1 = self.sc.parallelize(data1, 4)
rdd2 = self.sc.parallelize(data2, 4)
X = DictRDD(rdd1.zip(rdd2), bsize=5)
X2 = X.transform(lambda x: x ** 2, column=0)
assert_equal(X2.dtype, (np.ndarray, np.ndarray))
X2 = X.transform(lambda x: tuple((x ** 2).tolist()), column=0,
dtype=tuple)
assert_equal(X2.dtype, (tuple, np.ndarray))
assert_true(check_rdd_dtype(X2, {0: tuple, 1: np.ndarray}))
X2 = X.transform(lambda x: x ** 2, column=1, dtype=list)
assert_equal(X2.dtype, (np.ndarray, list))
assert_true(check_rdd_dtype(X2, {0: np.ndarray, 1: list}))
X2 = X.transform(lambda a, b: (a ** 2, (b ** 0.5).tolist()),
column=[0, 1], dtype=(np.ndarray, list))
assert_true(check_rdd_dtype(X2, {0: np.ndarray, 1: list}))
X2 = X.transform(lambda b, a: ((b ** 0.5).tolist(), a ** 2),
column=[1, 0], dtype=(list, np.ndarray))
assert_equal(X2.dtype, (np.ndarray, list))
assert_true(check_rdd_dtype(X2, {0: np.ndarray, 1: list}))
def test_transform_with_dtype(self):
data1 = np.arange(400).reshape((100, 4))
data2 = np.arange(200).reshape((100, 2))
rdd1 = self.sc.parallelize(data1, 4)
rdd2 = self.sc.parallelize(data2, 4)
X = DictRDD(rdd1.zip(rdd2), bsize=5)
X2 = X.transform(lambda x: x**2, column=0)
assert_equal(X2.dtype, (np.ndarray, np.ndarray))
X2 = X.transform(lambda x: tuple((x**2).tolist()),
column=0,
dtype=tuple)
assert_equal(X2.dtype, (tuple, np.ndarray))
assert_true(check_rdd_dtype(X2, {0: tuple, 1: np.ndarray}))
X2 = X.transform(lambda x: x**2, column=1, dtype=list)
assert_equal(X2.dtype, (np.ndarray, list))
assert_true(check_rdd_dtype(X2, {0: np.ndarray, 1: list}))
X2 = X.transform(lambda a, b: (a**2, (b**0.5).tolist()),
column=[0, 1],
dtype=(np.ndarray, list))
assert_true(check_rdd_dtype(X2, {0: np.ndarray, 1: list}))
X2 = X.transform(lambda b, a: ((b**0.5).tolist(), a**2),
column=[1, 0],
dtype=(list, np.ndarray))
assert_equal(X2.dtype, (np.ndarray, list))
assert_true(check_rdd_dtype(X2, {0: np.ndarray, 1: list}))
def test_same_prediction(self):
X, y, Z = self.make_classification(2, 80000)
local = SGDClassifier(average=True)
dist = SparkSGDClassifier(average=True)
local.fit(X, y)
dist.fit(Z, classes=np.unique(y))
y_local = local.predict(X)
y_dist = np.concatenate(dist.predict(Z[:, 'X']).collect())
mismatch = y_local.shape[0] - np.count_nonzero(y_dist == y_local)
mismatch_percent = float(mismatch) * 100 / y_local.shape[0]
assert_true(mismatch_percent <= 1)
def test_blocks_size(self):
n_partitions = 10
n_samples = 1000
data = [np.array([1, 2]) for i in range(n_samples)]
rdd = self.sc.parallelize(data, n_partitions)
shapes = ArrayRDD(rdd).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 100))
shapes = ArrayRDD(rdd, 5).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 5))
shapes = ArrayRDD(rdd, 50).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 50))
shapes = ArrayRDD(rdd, 250).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 100))
shapes = ArrayRDD(rdd, 66).map(lambda x: x.shape[0]).collect()
assert_true(all(np.in1d(shapes, [66, 34])))
def test_same_prediction(self):
X, y, Z = self.make_classification(2, 80000)
local = SGDClassifier(average=True)
dist = SparkSGDClassifier(average=True)
local.fit(X, y)
dist.fit(Z, classes=np.unique(y))
y_local = local.predict(X)
y_dist = dist.predict(Z[:, 'X'])
mismatch = y_local.shape[0] - np.count_nonzero(y_dist.toarray() == y_local)
mismatch_percent = float(mismatch) * 100 / y_local.shape[0]
assert_true(mismatch_percent <= 1)
assert_true(check_rdd_dtype(y_dist, (np.ndarray,)))
def test_blocks_size(self):
n_partitions = 10
n_samples = 1000
data = [np.array([1, 2]) for i in range(n_samples)]
rdd = self.sc.parallelize(data, n_partitions)
shapes = ArrayRDD(rdd).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 100))
shapes = ArrayRDD(rdd, 5).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 5))
shapes = ArrayRDD(rdd, 50).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 50))
shapes = ArrayRDD(rdd, 250).map(lambda x: x.shape[0]).collect()
assert_true(all(np.array(shapes) == 100))
shapes = ArrayRDD(rdd, 66).map(lambda x: x.shape[0]).collect()
assert_true(all(np.in1d(shapes, [66, 34])))
def test_same_prediction(self):
X, y, Z = self.make_classification(2, 80000)
local = SGDClassifier(average=True)
dist = SparkSGDClassifier(average=True)
local.fit(X, y)
dist.fit(Z, classes=np.unique(y))
y_local = local.predict(X)
y_dist = dist.predict(Z[:, 'X'])
mismatch = y_local.shape[0] - np.count_nonzero(
y_dist.toarray() == y_local)
mismatch_percent = float(mismatch) * 100 / y_local.shape[0]
assert_true(mismatch_percent <= 1)
assert_true(check_rdd_dtype(y_dist, (np.ndarray, )))
def test_same_fit_transforms(self):
X, X_rdd = self.make_dense_rdd((1e3, 12))
n_components = 4
random_state = 42
tol = 1e-7
local = TruncatedSVD(n_components, n_iter=5, tol=tol,
random_state=random_state)
dist = SparkTruncatedSVD(n_components, n_iter=50, tol=tol,
random_state=random_state)
Z_local = local.fit_transform(X)
Z_dist = dist.fit_transform(X_rdd)
Z_collected = Z_dist.toarray()
assert_true(check_rdd_dtype(Z_dist, (np.ndarray,)))
tol = 1e-1
assert_array_equal(Z_local.shape, Z_collected.shape)
assert(np.allclose(+Z_collected[:, 0], Z_local[:, 0], atol=tol) |
np.allclose(-Z_collected[:, 0], Z_local[:, 0], atol=tol))
def test_auto_dtype(self):
x = np.arange(80).reshape((40, 2))
y = tuple(range(40))
z = list(range(40))
x_rdd = self.sc.parallelize(x, 4)
y_rdd = self.sc.parallelize(y, 4)
z_rdd = self.sc.parallelize(z, 4)
expected = (np.arange(20).reshape(10, 2), tuple(range(10)),
list(range(10)))
rdd = DictRDD([x_rdd, y_rdd, z_rdd])
assert_tuple_equal(rdd.first(), expected)
assert_equal(rdd.dtype, (np.ndarray, tuple, tuple))
assert_true(check_rdd_dtype(rdd, {0: np.ndarray, 1: tuple, 2: tuple}))
rdd = DictRDD([x_rdd, y_rdd, z_rdd], columns=('x', 'y', 'z'))
assert_tuple_equal(rdd.first(), expected)
assert_equal(rdd.dtype, (np.ndarray, tuple, tuple))
assert_true(check_rdd_dtype(rdd, {'x': np.ndarray, 'y': tuple,
'z': tuple}))
def test_same_transform_with_treshold(self):
local = VarianceThreshold(.03)
dist = SparkVarianceThreshold(.03)
X_dense, X_dense_rdd = self.make_dense_rdd()
X_sparse, X_sparse_rdd = self.make_sparse_rdd()
Z_rdd = DictRDD([X_sparse_rdd, X_dense_rdd], columns=('X', 'Y'))
result_local = local.fit_transform(X_dense)
result_dist = dist.fit_transform(X_dense_rdd)
assert_true(check_rdd_dtype(result_dist, (np.ndarray,)))
assert_array_almost_equal(result_local, result_dist.toarray())
result_local = local.fit_transform(X_sparse)
result_dist = dist.fit_transform(X_sparse_rdd)
assert_true(check_rdd_dtype(result_dist, (sp.spmatrix,)))
assert_array_almost_equal(result_local.toarray(),
result_dist.toarray())
result_dist = dist.fit_transform(Z_rdd)[:, 'X']
assert_true(check_rdd_dtype(result_dist, (sp.spmatrix,)))
assert_array_almost_equal(result_local.toarray(),
result_dist.toarray())
def test_same_transform_with_treshold(self):
local = VarianceThreshold(.03)
dist = SparkVarianceThreshold(.03)
X_dense, X_dense_rdd = self.make_dense_rdd()
X_sparse, X_sparse_rdd = self.make_sparse_rdd()
Z_rdd = DictRDD([X_sparse_rdd, X_dense_rdd], columns=('X', 'Y'))
result_local = local.fit_transform(X_dense)
result_dist = dist.fit_transform(X_dense_rdd)
assert_true(check_rdd_dtype(result_dist, (np.ndarray, )))
assert_array_almost_equal(result_local, result_dist.toarray())
result_local = local.fit_transform(X_sparse)
result_dist = dist.fit_transform(X_sparse_rdd)
assert_true(check_rdd_dtype(result_dist, (sp.spmatrix, )))
assert_array_almost_equal(result_local.toarray(),
result_dist.toarray())
result_dist = dist.fit_transform(Z_rdd)[:, 'X']
assert_true(check_rdd_dtype(result_dist, (sp.spmatrix, )))
assert_array_almost_equal(result_local.toarray(),
result_dist.toarray())