59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
![]() |
import pytest
|
||
|
import numpy as np
|
||
|
from numpy.testing import assert_allclose
|
||
|
|
||
|
from sklearn.ensemble._hist_gradient_boosting._bitset import (
|
||
|
set_bitset_memoryview,
|
||
|
in_bitset_memoryview,
|
||
|
set_raw_bitset_from_binned_bitset
|
||
|
)
|
||
|
from sklearn.ensemble._hist_gradient_boosting.common import X_DTYPE
|
||
|
|
||
|
|
||
|
@pytest.mark.parametrize("values_to_insert, expected_bitset", [
|
||
|
([0, 4, 33], np.array([2**0 + 2**4, 2**1, 0], dtype=np.uint32)),
|
||
|
([31, 32, 33, 79], np.array([2**31, 2**0 + 2**1, 2**15], dtype=np.uint32))
|
||
|
])
|
||
|
def test_set_get_bitset(values_to_insert, expected_bitset):
|
||
|
n_32bits_ints = 3
|
||
|
bitset = np.zeros(n_32bits_ints, dtype=np.uint32)
|
||
|
for value in values_to_insert:
|
||
|
set_bitset_memoryview(bitset, value)
|
||
|
assert_allclose(expected_bitset, bitset)
|
||
|
for value in range(32 * n_32bits_ints):
|
||
|
if value in values_to_insert:
|
||
|
assert in_bitset_memoryview(bitset, value)
|
||
|
else:
|
||
|
assert not in_bitset_memoryview(bitset, value)
|
||
|
|
||
|
|
||
|
@pytest.mark.parametrize(
|
||
|
"raw_categories, binned_cat_to_insert, expected_raw_bitset", [
|
||
|
([3, 4, 5, 10, 31, 32, 43],
|
||
|
[0, 2, 4, 5, 6],
|
||
|
[2**3 + 2**5 + 2**31, 2**0 + 2**11]),
|
||
|
|
||
|
([3, 33, 50, 52],
|
||
|
[1, 3],
|
||
|
[0, 2**1 + 2**20]),
|
||
|
]
|
||
|
)
|
||
|
def test_raw_bitset_from_binned_bitset(raw_categories, binned_cat_to_insert,
|
||
|
expected_raw_bitset):
|
||
|
binned_bitset = np.zeros(2, dtype=np.uint32)
|
||
|
raw_bitset = np.zeros(2, dtype=np.uint32)
|
||
|
raw_categories = np.asarray(raw_categories, dtype=X_DTYPE)
|
||
|
|
||
|
for val in binned_cat_to_insert:
|
||
|
set_bitset_memoryview(binned_bitset, val)
|
||
|
|
||
|
set_raw_bitset_from_binned_bitset(raw_bitset, binned_bitset,
|
||
|
raw_categories)
|
||
|
|
||
|
assert_allclose(expected_raw_bitset, raw_bitset)
|
||
|
for binned_cat_val, raw_cat_val in enumerate(raw_categories):
|
||
|
if binned_cat_val in binned_cat_to_insert:
|
||
|
assert in_bitset_memoryview(raw_bitset, raw_cat_val)
|
||
|
else:
|
||
|
assert not in_bitset_memoryview(raw_bitset, raw_cat_val)
|