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#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import unittest
import array as pyarray
from numpy import arange, array, array_equal, inf, ones, tile, zeros
from pyspark.serializers import PickleSerializer
from pyspark.ml.linalg import DenseMatrix, DenseVector, MatrixUDT, SparseMatrix, SparseVector, \
Vector, VectorUDT, Vectors
from pyspark.testing.mllibutils import MLlibTestCase
from pyspark.sql import Row
class VectorTests(MLlibTestCase):
def _test_serialize(self, v):
ser = PickleSerializer()
self.assertEqual(v, ser.loads(ser.dumps(v)))
jvec = self.sc._jvm.org.apache.spark.ml.python.MLSerDe.loads(bytearray(ser.dumps(v)))
nv = ser.loads(bytes(self.sc._jvm.org.apache.spark.ml.python.MLSerDe.dumps(jvec)))
self.assertEqual(v, nv)
vs = [v] * 100
jvecs = self.sc._jvm.org.apache.spark.ml.python.MLSerDe.loads(bytearray(ser.dumps(vs)))
nvs = ser.loads(bytes(self.sc._jvm.org.apache.spark.ml.python.MLSerDe.dumps(jvecs)))
self.assertEqual(vs, nvs)
def test_serialize(self):
self._test_serialize(DenseVector(range(10)))
self._test_serialize(DenseVector(array([1., 2., 3., 4.])))
self._test_serialize(DenseVector(pyarray.array('d', range(10))))
self._test_serialize(SparseVector(4, {1: 1, 3: 2}))
self._test_serialize(SparseVector(3, {}))
self._test_serialize(DenseMatrix(2, 3, range(6)))
sm1 = SparseMatrix(
3, 4, [0, 2, 2, 4, 4], [1, 2, 1, 2], [1.0, 2.0, 4.0, 5.0])
self._test_serialize(sm1)
def test_dot(self):
sv = SparseVector(4, {1: 1, 3: 2})
dv = DenseVector(array([1., 2., 3., 4.]))
lst = DenseVector([1, 2, 3, 4])
mat = array([[1., 2., 3., 4.],
[1., 2., 3., 4.],
[1., 2., 3., 4.],
[1., 2., 3., 4.]])
arr = pyarray.array('d', [0, 1, 2, 3])
self.assertEqual(10.0, sv.dot(dv))
self.assertTrue(array_equal(array([3., 6., 9., 12.]), sv.dot(mat)))
self.assertEqual(30.0, dv.dot(dv))
self.assertTrue(array_equal(array([10., 20., 30., 40.]), dv.dot(mat)))
self.assertEqual(30.0, lst.dot(dv))
self.assertTrue(array_equal(array([10., 20., 30., 40.]), lst.dot(mat)))
self.assertEqual(7.0, sv.dot(arr))
def test_squared_distance(self):
def squared_distance(a, b):
73 ↛ 76line 73 didn't jump to line 76, because the condition on line 73 was never false if isinstance(a, Vector):
return a.squared_distance(b)
else:
return b.squared_distance(a)
sv = SparseVector(4, {1: 1, 3: 2})
dv = DenseVector(array([1., 2., 3., 4.]))
lst = DenseVector([4, 3, 2, 1])
lst1 = [4, 3, 2, 1]
arr = pyarray.array('d', [0, 2, 1, 3])
narr = array([0, 2, 1, 3])
self.assertEqual(15.0, squared_distance(sv, dv))
self.assertEqual(25.0, squared_distance(sv, lst))
self.assertEqual(20.0, squared_distance(dv, lst))
self.assertEqual(15.0, squared_distance(dv, sv))
self.assertEqual(25.0, squared_distance(lst, sv))
self.assertEqual(20.0, squared_distance(lst, dv))
self.assertEqual(0.0, squared_distance(sv, sv))
self.assertEqual(0.0, squared_distance(dv, dv))
self.assertEqual(0.0, squared_distance(lst, lst))
self.assertEqual(25.0, squared_distance(sv, lst1))
self.assertEqual(3.0, squared_distance(sv, arr))
self.assertEqual(3.0, squared_distance(sv, narr))
def test_hash(self):
v1 = DenseVector([0.0, 1.0, 0.0, 5.5])
v2 = SparseVector(4, [(1, 1.0), (3, 5.5)])
v3 = DenseVector([0.0, 1.0, 0.0, 5.5])
v4 = SparseVector(4, [(1, 1.0), (3, 2.5)])
self.assertEqual(hash(v1), hash(v2))
self.assertEqual(hash(v1), hash(v3))
self.assertEqual(hash(v2), hash(v3))
self.assertFalse(hash(v1) == hash(v4))
self.assertFalse(hash(v2) == hash(v4))
def test_eq(self):
v1 = DenseVector([0.0, 1.0, 0.0, 5.5])
v2 = SparseVector(4, [(1, 1.0), (3, 5.5)])
v3 = DenseVector([0.0, 1.0, 0.0, 5.5])
v4 = SparseVector(6, [(1, 1.0), (3, 5.5)])
v5 = DenseVector([0.0, 1.0, 0.0, 2.5])
v6 = SparseVector(4, [(1, 1.0), (3, 2.5)])
dm1 = DenseMatrix(2, 2, [2, 0, 0, 0])
sm1 = SparseMatrix(2, 2, [0, 2, 3], [0], [2])
self.assertEqual(v1, v2)
self.assertEqual(v1, v3)
self.assertFalse(v2 == v4)
self.assertFalse(v1 == v5)
self.assertFalse(v1 == v6)
# this is done as Dense and Sparse matrices can be semantically
# equal while still implementing a different __eq__ method
self.assertEqual(dm1, sm1)
self.assertEqual(sm1, dm1)
def test_equals(self):
indices = [1, 2, 4]
values = [1., 3., 2.]
self.assertTrue(Vectors._equals(indices, values, list(range(5)), [0., 1., 3., 0., 2.]))
self.assertFalse(Vectors._equals(indices, values, list(range(5)), [0., 3., 1., 0., 2.]))
self.assertFalse(Vectors._equals(indices, values, list(range(5)), [0., 3., 0., 2.]))
self.assertFalse(Vectors._equals(indices, values, list(range(5)), [0., 1., 3., 2., 2.]))
def test_conversion(self):
# numpy arrays should be automatically upcast to float64
# tests for fix of [SPARK-5089]
v = array([1, 2, 3, 4], dtype='float64')
dv = DenseVector(v)
self.assertTrue(dv.array.dtype == 'float64')
v = array([1, 2, 3, 4], dtype='float32')
dv = DenseVector(v)
self.assertTrue(dv.array.dtype == 'float64')
def test_sparse_vector_indexing(self):
sv = SparseVector(5, {1: 1, 3: 2})
self.assertEqual(sv[0], 0.)
self.assertEqual(sv[3], 2.)
self.assertEqual(sv[1], 1.)
self.assertEqual(sv[2], 0.)
self.assertEqual(sv[4], 0.)
self.assertEqual(sv[-1], 0.)
self.assertEqual(sv[-2], 2.)
self.assertEqual(sv[-3], 0.)
self.assertEqual(sv[-5], 0.)
for ind in [5, -6]:
self.assertRaises(IndexError, sv.__getitem__, ind)
for ind in [7.8, '1']:
self.assertRaises(TypeError, sv.__getitem__, ind)
zeros = SparseVector(4, {})
self.assertEqual(zeros[0], 0.0)
self.assertEqual(zeros[3], 0.0)
for ind in [4, -5]:
self.assertRaises(IndexError, zeros.__getitem__, ind)
empty = SparseVector(0, {})
for ind in [-1, 0, 1]:
self.assertRaises(IndexError, empty.__getitem__, ind)
def test_sparse_vector_iteration(self):
self.assertListEqual(list(SparseVector(3, [], [])), [0.0, 0.0, 0.0])
self.assertListEqual(list(SparseVector(5, [0, 3], [1.0, 2.0])), [1.0, 0.0, 0.0, 2.0, 0.0])
def test_matrix_indexing(self):
mat = DenseMatrix(3, 2, [0, 1, 4, 6, 8, 10])
expected = [[0, 6], [1, 8], [4, 10]]
for i in range(3):
for j in range(2):
self.assertEqual(mat[i, j], expected[i][j])
for i, j in [(-1, 0), (4, 1), (3, 4)]:
self.assertRaises(IndexError, mat.__getitem__, (i, j))
def test_repr_dense_matrix(self):
mat = DenseMatrix(3, 2, [0, 1, 4, 6, 8, 10])
self.assertTrue(
repr(mat),
'DenseMatrix(3, 2, [0.0, 1.0, 4.0, 6.0, 8.0, 10.0], False)')
mat = DenseMatrix(3, 2, [0, 1, 4, 6, 8, 10], True)
self.assertTrue(
repr(mat),
'DenseMatrix(3, 2, [0.0, 1.0, 4.0, 6.0, 8.0, 10.0], False)')
mat = DenseMatrix(6, 3, zeros(18))
self.assertTrue(
repr(mat),
'DenseMatrix(6, 3, [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, ..., \
0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], False)')
def test_repr_sparse_matrix(self):
sm1t = SparseMatrix(
3, 4, [0, 2, 3, 5], [0, 1, 2, 0, 2], [3.0, 2.0, 4.0, 9.0, 8.0],
isTransposed=True)
self.assertTrue(
repr(sm1t),
'SparseMatrix(3, 4, [0, 2, 3, 5], [0, 1, 2, 0, 2], [3.0, 2.0, 4.0, 9.0, 8.0], True)')
indices = tile(arange(6), 3)
values = ones(18)
sm = SparseMatrix(6, 3, [0, 6, 12, 18], indices, values)
self.assertTrue(
repr(sm), "SparseMatrix(6, 3, [0, 6, 12, 18], \
[0, 1, 2, 3, 4, 5, 0, 1, ..., 4, 5, 0, 1, 2, 3, 4, 5], \
[1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, ..., \
1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0], False)")
self.assertTrue(
str(sm),
"6 X 3 CSCMatrix\n\
(0,0) 1.0\n(1,0) 1.0\n(2,0) 1.0\n(3,0) 1.0\n(4,0) 1.0\n(5,0) 1.0\n\
(0,1) 1.0\n(1,1) 1.0\n(2,1) 1.0\n(3,1) 1.0\n(4,1) 1.0\n(5,1) 1.0\n\
(0,2) 1.0\n(1,2) 1.0\n(2,2) 1.0\n(3,2) 1.0\n..\n..")
sm = SparseMatrix(1, 18, zeros(19), [], [])
self.assertTrue(
repr(sm),
'SparseMatrix(1, 18, \
[0, 0, 0, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0], [], [], False)')
def test_sparse_matrix(self):
# Test sparse matrix creation.
sm1 = SparseMatrix(
3, 4, [0, 2, 2, 4, 4], [1, 2, 1, 2], [1.0, 2.0, 4.0, 5.0])
self.assertEqual(sm1.numRows, 3)
self.assertEqual(sm1.numCols, 4)
self.assertEqual(sm1.colPtrs.tolist(), [0, 2, 2, 4, 4])
self.assertEqual(sm1.rowIndices.tolist(), [1, 2, 1, 2])
self.assertEqual(sm1.values.tolist(), [1.0, 2.0, 4.0, 5.0])
self.assertTrue(
repr(sm1),
'SparseMatrix(3, 4, [0, 2, 2, 4, 4], [1, 2, 1, 2], [1.0, 2.0, 4.0, 5.0], False)')
# Test indexing
expected = [
[0, 0, 0, 0],
[1, 0, 4, 0],
[2, 0, 5, 0]]
for i in range(3):
for j in range(4):
self.assertEqual(expected[i][j], sm1[i, j])
self.assertTrue(array_equal(sm1.toArray(), expected))
for i, j in [(-1, 1), (4, 3), (3, 5)]:
self.assertRaises(IndexError, sm1.__getitem__, (i, j))
# Test conversion to dense and sparse.
smnew = sm1.toDense().toSparse()
self.assertEqual(sm1.numRows, smnew.numRows)
self.assertEqual(sm1.numCols, smnew.numCols)
self.assertTrue(array_equal(sm1.colPtrs, smnew.colPtrs))
self.assertTrue(array_equal(sm1.rowIndices, smnew.rowIndices))
self.assertTrue(array_equal(sm1.values, smnew.values))
sm1t = SparseMatrix(
3, 4, [0, 2, 3, 5], [0, 1, 2, 0, 2], [3.0, 2.0, 4.0, 9.0, 8.0],
isTransposed=True)
self.assertEqual(sm1t.numRows, 3)
self.assertEqual(sm1t.numCols, 4)
self.assertEqual(sm1t.colPtrs.tolist(), [0, 2, 3, 5])
self.assertEqual(sm1t.rowIndices.tolist(), [0, 1, 2, 0, 2])
self.assertEqual(sm1t.values.tolist(), [3.0, 2.0, 4.0, 9.0, 8.0])
expected = [
[3, 2, 0, 0],
[0, 0, 4, 0],
[9, 0, 8, 0]]
for i in range(3):
for j in range(4):
self.assertEqual(expected[i][j], sm1t[i, j])
self.assertTrue(array_equal(sm1t.toArray(), expected))
def test_dense_matrix_is_transposed(self):
mat1 = DenseMatrix(3, 2, [0, 4, 1, 6, 3, 9], isTransposed=True)
mat = DenseMatrix(3, 2, [0, 1, 3, 4, 6, 9])
self.assertEqual(mat1, mat)
expected = [[0, 4], [1, 6], [3, 9]]
for i in range(3):
for j in range(2):
self.assertEqual(mat1[i, j], expected[i][j])
self.assertTrue(array_equal(mat1.toArray(), expected))
sm = mat1.toSparse()
self.assertTrue(array_equal(sm.rowIndices, [1, 2, 0, 1, 2]))
self.assertTrue(array_equal(sm.colPtrs, [0, 2, 5]))
self.assertTrue(array_equal(sm.values, [1, 3, 4, 6, 9]))
def test_norms(self):
a = DenseVector([0, 2, 3, -1])
self.assertAlmostEqual(a.norm(2), 3.742, 3)
self.assertTrue(a.norm(1), 6)
self.assertTrue(a.norm(inf), 3)
a = SparseVector(4, [0, 2], [3, -4])
self.assertAlmostEqual(a.norm(2), 5)
self.assertTrue(a.norm(1), 7)
self.assertTrue(a.norm(inf), 4)
tmp = SparseVector(4, [0, 2], [3, 0])
self.assertEqual(tmp.numNonzeros(), 1)
class VectorUDTTests(MLlibTestCase):
dv0 = DenseVector([])
dv1 = DenseVector([1.0, 2.0])
sv0 = SparseVector(2, [], [])
sv1 = SparseVector(2, [1], [2.0])
udt = VectorUDT()
def test_json_schema(self):
self.assertEqual(VectorUDT.fromJson(self.udt.jsonValue()), self.udt)
def test_serialization(self):
for v in [self.dv0, self.dv1, self.sv0, self.sv1]:
self.assertEqual(v, self.udt.deserialize(self.udt.serialize(v)))
def test_infer_schema(self):
rdd = self.sc.parallelize([Row(label=1.0, features=self.dv1),
Row(label=0.0, features=self.sv1)])
df = rdd.toDF()
schema = df.schema
field = [f for f in schema.fields if f.name == "features"][0]
self.assertEqual(field.dataType, self.udt)
vectors = df.rdd.map(lambda p: p.features).collect()
self.assertEqual(len(vectors), 2)
for v in vectors:
if isinstance(v, SparseVector):
self.assertEqual(v, self.sv1)
343 ↛ 346line 343 didn't jump to line 346, because the condition on line 343 was never false elif isinstance(v, DenseVector):
self.assertEqual(v, self.dv1)
else:
raise TypeError("expecting a vector but got %r of type %r" % (v, type(v)))
class MatrixUDTTests(MLlibTestCase):
dm1 = DenseMatrix(3, 2, [0, 1, 4, 5, 9, 10])
dm2 = DenseMatrix(3, 2, [0, 1, 4, 5, 9, 10], isTransposed=True)
sm1 = SparseMatrix(1, 1, [0, 1], [0], [2.0])
sm2 = SparseMatrix(2, 1, [0, 0, 1], [0], [5.0], isTransposed=True)
udt = MatrixUDT()
def test_json_schema(self):
self.assertEqual(MatrixUDT.fromJson(self.udt.jsonValue()), self.udt)
def test_serialization(self):
for m in [self.dm1, self.dm2, self.sm1, self.sm2]:
self.assertEqual(m, self.udt.deserialize(self.udt.serialize(m)))
def test_infer_schema(self):
rdd = self.sc.parallelize([("dense", self.dm1), ("sparse", self.sm1)])
df = rdd.toDF()
schema = df.schema
self.assertTrue(schema.fields[1].dataType, self.udt)
matrices = df.rdd.map(lambda x: x._2).collect()
self.assertEqual(len(matrices), 2)
for m in matrices:
if isinstance(m, DenseMatrix):
self.assertTrue(m, self.dm1)
374 ↛ 377line 374 didn't jump to line 377, because the condition on line 374 was never false elif isinstance(m, SparseMatrix):
self.assertTrue(m, self.sm1)
else:
raise ValueError("Expected a matrix but got type %r" % type(m))
if __name__ == "__main__":
from pyspark.ml.tests.test_linalg import * # noqa: F401
try:
import xmlrunner # type: ignore[import]
testRunner = xmlrunner.XMLTestRunner(output='target/test-reports', verbosity=2)
except ImportError:
testRunner = None
unittest.main(testRunner=testRunner, verbosity=2)
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