def setup_method(self, method):
np.random.seed(12345)
N = 32
self.U = cp.ones((N, N, N))
self.U[:, 0:(old_div(N, 2)), :] = -1
self.V = 1e-1 * cp.asarray(np.random.randn(N, N, N))
self.D = self.U + self.V
def test_02(self):
lmbda = 1e-1
opt = tvl2.TVL2Deconv.Options(
{'Verbose': False, 'gEvalY': False, 'MaxMainIter': 250})
b = tvl2.TVL2Deconv(cp.ones((1)), self.D, lmbda, opt)
X = b.solve()
assert cp.abs(b.itstat[-1].ObjFun - 45.45958573088) < 1e-3
assert sm.mse(self.U, X) < 1e-3
def test_02(self):
lmbda = 3
try:
b = tvl2.TVL2Deconv(cp.ones((1, )), self.D, lmbda)
b.solve()
except Exception as e:
print(e)
assert 0
def test_02(self):
lmbda = 1e-1
opt = tvl2.TVL2Deconv.Options(
{'Verbose': False, 'gEvalY': False, 'MaxMainIter': 250})
b = tvl2.TVL2Deconv(cp.ones((1)), self.D, lmbda, opt, axes=(0, 1, 2))
X = b.solve()
assert cp.abs(b.itstat[-1].ObjFun - 567.72425227) < 1e-3
assert sm.mse(self.U, X) < 1e-3
def ones(shape, dtype=numpy.float32, stream=None):
"""Creates a zero-filled cupy.ndarray object.
This function is equivalent to ``full(shape, 1, dtype, stream)``.
"""
warnings.warn("chainer.cuda.ones is deprecated. Use cupy.ones instead.", DeprecationWarning)
check_cuda_available()
assert stream is None
return cupy.ones(shape, dtype=dtype)
def test_07(self):
lmbda = 3
dt = cp.float64
opt = tvl2.TVL2Deconv.Options(
{'Verbose': False, 'MaxMainIter': 20, 'AutoRho':
{'Enabled': True}, 'DataType': dt})
b = tvl2.TVL2Deconv(cp.ones((1, )), self.D, lmbda, opt=opt)
b.solve()
assert b.X.dtype == dt
assert b.Y.dtype == dt
assert b.U.dtype == dt
def test_scan(self, dtype):
element_num = 10000
if dtype in {cupy.int8, cupy.uint8}:
element_num = 100
a = cupy.ones((element_num,), dtype=dtype)
prefix_sum = cupy.core.core.scan(a)
expect = cupy.arange(start=1, stop=element_num + 1).astype(dtype)
testing.assert_array_equal(prefix_sum, expect)
def test_15(self):
N = 16
Nd = 5
M = 4
D = cp.random.randn(Nd, Nd, M)
s = cp.random.randn(N, N)
w = cp.ones(s.shape)
lmbda = 1e-1
try:
b = cbpdn.ConvBPDNMask(D, s, lmbda, w)
b.solve()
b.reconstruct()
except Exception as e:
print(e)
assert 0
def test_scan_out(self, dtype):
element_num = 10000
if dtype in {cupy.int8, cupy.uint8, cupy.float16}:
element_num = 100
a = cupy.ones((element_num,), dtype=dtype)
b = cupy.zeros_like(a)
cupy.core.core.scan(a, b)
expect = cupy.arange(start=1, stop=element_num + 1).astype(dtype)
testing.assert_array_equal(b, expect)
cupy.core.core.scan(a, a)
testing.assert_array_equal(a, expect)
def test_30(self):
N = 16
Nd = 5
M = 4
D = cp.random.randn(Nd, Nd, M)
s = cp.random.randn(N, N)
w = cp.ones(s.shape)
dt = cp.float32
opt = cbpdn.ConvBPDN.Options(
{'Verbose': False, 'MaxMainIter': 20, 'AutoRho': {'Enabled': True},
'DataType': dt})
lmbda = 1e-1
b = cbpdn.AddMaskSim(cbpdn.ConvBPDN, D, s, w, lmbda, opt=opt)
b.solve()
assert b.cbpdn.X.dtype == dt
assert b.cbpdn.Y.dtype == dt
assert b.cbpdn.U.dtype == dt
def ones_like(array, stream=None):
"""Creates a one-filled cupy.ndarray object like the given array.
Args:
array (cupy.ndarray or numpy.ndarray): Base array.
stream (cupy.cuda.Stream): CUDA stream.
Returns:
cupy.ndarray: One-filled array.
"""
warnings.warn("chainer.cuda.ones_like is deprecated. Use cupy.ones_like instead.", DeprecationWarning)
check_cuda_available()
assert stream is None
if isinstance(array, cupy.ndarray):
return cupy.ones_like(array)
return cupy.ones(array.shape, dtype=array.dtype)
def test_backward_case2(self):
"""Backward if non-zero gradient is on a face."""
vertices = [
[0.8, 0.8, 1.],
[-0.5, -0.8, 1.],
[0.8, -0.8, 1.]]
faces = [[0, 1, 2]]
pyi = 40
pxi = 50
grad_ref = [
[0.98646867, 1.04628897, 0.],
[-1.03415668, - 0.10403691, 0.],
[3.00094461, - 1.55173182, 0.],
]
renderer = neural_renderer.Renderer()
renderer.image_size = 64
renderer.anti_aliasing = False
renderer.perspective = False
renderer.light_intensity_ambient = 1.0
renderer.light_intensity_directional = 0.0
vertices = cp.array(vertices, 'float32')
faces = cp.array(faces, 'int32')
textures = cp.ones((faces.shape[0], 4, 4, 4, 3), 'float32')
grad_ref = cp.array(grad_ref, 'float32')
vertices, faces, textures, grad_ref = utils.to_minibatch((vertices, faces, textures, grad_ref))
vertices = chainer.Variable(vertices)
images = renderer.render(vertices, faces, textures)
images = cf.mean(images, axis=1)
loss = cf.sum(cf.absolute(images[:, pyi, pxi]))
loss.backward()
grad_ref = cp.array(grad_ref, 'float32')
chainer.testing.assert_allclose(vertices.grad, grad_ref, rtol=1e-2)
def test_backward_case1(self):
"""Backward if non-zero gradient is out of a face."""
vertices = [
[0.8, 0.8, 1.],
[0.0, -0.5, 1.],
[0.2, -0.4, 1.]]
faces = [[0, 1, 2]]
pxi = 35
pyi = 25
grad_ref = [
[1.6725862, -0.26021874, 0.],
[1.41986704, -1.64284933, 0.],
[0., 0., 0.],
]
renderer = neural_renderer.Renderer()
renderer.image_size = 64
renderer.anti_aliasing = False
renderer.perspective = False
renderer.light_intensity_ambient = 1.0
renderer.light_intensity_directional = 0.0
vertices = cp.array(vertices, 'float32')
faces = cp.array(faces, 'int32')
textures = cp.ones((faces.shape[0], 4, 4, 4, 3), 'float32')
grad_ref = cp.array(grad_ref, 'float32')
vertices, faces, textures, grad_ref = utils.to_minibatch((vertices, faces, textures, grad_ref))
vertices = chainer.Variable(vertices)
images = renderer.render(vertices, faces, textures)
images = cf.mean(images, axis=1)
loss = cf.sum(cf.absolute(images[:, pyi, pxi] - 1))
loss.backward()
chainer.testing.assert_allclose(vertices.grad, grad_ref, rtol=1e-2)
def fit2dh(A, deg, hgt, hgt_min, hgt_max, gpu=False):
"""
Estimate best fit 2d ramp and topography-correlated component simultaneously.
Inputs:
A : Input ndarray (can include nan)
deg : degree of polynomial for fitting ramp
- 1 -> a+bx+cy (ramp, default)
- bl -> a+bx+cy+dxy (biliner)
- 2 -> a+bx+cy+dxy+ex**2_fy**2 (2d polynomial)
- [] -> a (must be used with hgt)
hgt : Input hgt to estimate coefficient of topo-corr component
If blank, don*t estimate topo-corr component.
hgt_min : Minimum hgt to take into account in hgt-linear
hgt_max : Maximum hgt to take into account in hgt-linear
gpu : GPU flag
Returns:
Afit : Best fit solution with the same demention as A
m : Set of parameters of best fit plain (a,b,c...)
Note: GPU option seems slow and may return error when the size is large.
Not recommended.
"""
if gpu:
import cupy as xp
A = xp.asarray(A)
hgt = xp.asarray(hgt)
hgt_min = xp.asarray(hgt_min)
hgt_max = xp.asarray(hgt_max)
else:
xp = np
### Make design matrix G
length, width = A.shape
if not deg:
G = xp.ones((length * width))
else:
Xgrid, Ygrid = xp.meshgrid(xp.arange(width), xp.arange(length))
Xgrid1 = Xgrid.ravel()
Ygrid1 = Ygrid.ravel()
if str(deg) == "1":
G = xp.stack((Xgrid1, Ygrid1)).T
elif str(deg) == "bl":
G = xp.stack((Xgrid1, Ygrid1, Xgrid1 * Ygrid1)).T
elif str(deg) == "2":
G = xp.stack(
(Xgrid1, Ygrid1, Xgrid1 * Ygrid1, Xgrid1**2, Ygrid1**2)).T
else:
print('\nERROR: Not proper deg ({}) is used\n'.format(deg),
file=sys.stderr)
return False
del Xgrid, Ygrid, Xgrid1, Ygrid1
G = xp.hstack([xp.ones((length * width, 1)), G])
if len(hgt) > 0:
_hgt = hgt.copy() ## Not to overwrite hgt in main
_hgt[xp.isnan(_hgt)] = 0
_hgt[_hgt < hgt_min] = 0
_hgt[_hgt > hgt_max] = 0
G2 = xp.vstack((G.T, hgt.ravel())).T ## for Afit
G = xp.vstack((G.T, _hgt.ravel())).T
del _hgt
else:
G2 = G
G = G.astype(xp.int32)
### Invert
mask = xp.isnan(A.ravel())
m = xp.linalg.lstsq(G[~mask, :], A.ravel()[~mask], rcond=None)[0]
Afit = ((xp.matmul(G2, m)).reshape((length, width))).astype(xp.float32)
if gpu:
Afit = xp.asnumpy(Afit)
m = xp.asnumpy(m)
del A, hgt, hgt_min, hgt_max, length, width, G, G2, mask
return Afit, m
def __init__(
self,
dim_x,
dim_z,
dim_u=0,
points=1,
dtype=cp.float32,
):
self.points = points
if dim_x < 1:
raise ValueError("dim_x must be 1 or greater")
if dim_z < 1:
raise ValueError("dim_z must be 1 or greater")
if dim_u < 0:
raise ValueError("dim_u must be 0 or greater")
self.dim_x = dim_x
self.dim_z = dim_z
self.dim_u = dim_u
# Create data arrays
self.x = cp.zeros((
self.points,
dim_x,
1,
), dtype=dtype) # state
self.P = cp.repeat(
cp.identity(dim_x, dtype=dtype)[cp.newaxis, :, :],
self.points,
axis=0,
) # uncertainty covariance
self.Q = cp.repeat(
cp.identity(dim_x, dtype=dtype)[cp.newaxis, :, :],
self.points,
axis=0,
) # process uncertainty
self.B = None # control transition matrix
self.F = cp.repeat(
cp.identity(dim_x, dtype=dtype)[cp.newaxis, :, :],
self.points,
axis=0,
) # state transition matrix
self.H = cp.zeros((
self.points,
dim_z,
dim_z,
), dtype=dtype) # Measurement function
self.R = cp.repeat(
cp.identity(dim_z, dtype=dtype)[cp.newaxis, :, :],
self.points,
axis=0,
) # process uncertainty
self._alpha_sq = cp.ones((
self.points,
1,
1,
), dtype=dtype) # fading memory control
self.z = cp.empty((
self.points,
dim_z,
1,
), dtype=dtype)
# Allocate GPU resources
numSM = _get_numSM()
threads_z_axis = 16
threadsperblock = (self.dim_x, self.dim_x, threads_z_axis)
blockspergrid = (1, 1, numSM * 20)
max_threads_per_block = self.dim_x * self.dim_x * threads_z_axis
# Only need to populate cache once
# At class initialization
_filters_cuda._populate_kernel_cache(
self.x.dtype,
threads_z_axis,
self.dim_x,
self.dim_z,
self.dim_u,
max_threads_per_block,
)
# Retrieve kernel from cache
self.predict_kernel = _filters_cuda._get_backend_kernel(
self.x.dtype,
blockspergrid,
threadsperblock,
"predict",
)
self.update_kernel = _filters_cuda._get_backend_kernel(
self.x.dtype,
blockspergrid,
threadsperblock,
"update",
)
_print_atts(self.predict_kernel)
_print_atts(self.update_kernel)
def test_each_channel_with_asymmetric_kernel():
mask = cp.triu(cp.ones(COLOR_IMAGE.shape[:2], dtype=np.bool_))
mask_each(COLOR_IMAGE, mask)
fileobj.write("IS:{}pm{}\n".format(inception_mean, inception_std))
fileobj.write("FID:{}\n\n".format(fid))
if __name__ == '__main__':
args = parse_args()
if not os.path.exists("scores"):
os.mkdir("scores")
evmodel = Inception()
serializers.load_hdf5('metric/inception_score.model', evmodel)
G, D, data = load_GD(args.G, args.D)
if args.gpu >= 0:
cuda.get_device(args.gpu).use()
evmodel.to_gpu()
G.to_gpu()
D.to_gpu()
G, D = DOT.thermalize_spectral_norm(G, D)
if args.k == None:
k = DOT.eff_k(G, D)
else:
k = args.k * xp.ones([1])
main(args,
G,
D,
data,
evmodel,
k,
transport=args.transport,
N_update=args.N_update,
showing_period=args.showing_period)
def warpAffine_gpu(im, T, out_size, gpuID=0):
H = im.shape[0]
W = im.shape[1]
N = np.prod(out_size)
x_t, y_t = np.meshgrid(np.linspace(-1, 1, out_size[1]),
np.linspace(-1, 1, out_size[0]))
with cupy.cuda.Device(gpuID):
im_gpu = cupy.array(im)
x_t = cupy.array(x_t, cupy.float32)
y_t = cupy.array(y_t, cupy.float32)
source_grid = cupy.vstack(
[x_t.flatten(),
y_t.flatten(),
cupy.ones(np.prod(x_t.shape))])
T_gpu = cupy.array(T, cupy.float32)
target_grid = cupy.dot(T_gpu, source_grid)
x_s = cupy.reshape(target_grid[0, :], (-1))
y_s = cupy.reshape(target_grid[1, :], (-1))
del target_grid, source_grid
x_s = cupy.array((x_s + 1.0) * (W - 1) / 2.0, cupy.float32)
y_s = cupy.array((y_s + 1.0) * (H - 1) / 2.0, cupy.float32)
x0 = cupy.array(cupy.floor(x_s), cupy.int32)
x1 = x0 + 1
y0 = cupy.array(cupy.floor(y_s), cupy.int32)
y1 = y0 + 1
x0 = cupy.clip(x0, a_min=0, a_max=W - 1)
x1 = cupy.clip(x1, a_min=0, a_max=W - 1)
y0 = cupy.clip(y0, a_min=0, a_max=H - 1)
y1 = cupy.clip(y1, a_min=0, a_max=H - 1)
ind_x0y0 = y0 * W + x0
ind_x0y1 = y1 * W + x0
ind_x1y0 = y0 * W + x1
ind_x1y1 = y1 * W + x1
x0_f = cupy.array(x0, cupy.float32)
x1_f = cupy.array(x1, cupy.float32)
y0_f = cupy.array(y0, cupy.float32)
y1_f = cupy.array(y1, cupy.float32)
im_out_gpu = cupy.zeros((N, 1), cupy.float32)
val_orig = cupy.reshape(im_gpu[:, :], (-1))
im_out_gpu = val_orig[ind_x0y0] * (x1_f - x_s) * (y1_f - y_s)\
+ val_orig[ind_x0y1] * (x1_f - x_s) * (y_s - y0_f)\
+ val_orig[ind_x1y0] * (x_s - x0_f) * (y1_f - y_s)\
+ val_orig[ind_x1y1] * (x_s - x0_f) * (y_s - y0_f)
del ind_x0y0, ind_x0y1
im_out_gpu = im_out_gpu.reshape(out_size[0], out_size[1])
im_out = im_out_gpu.get()
return im_out
iter_per_epoch = 100
print("Linear classifier probe: input")
weight_init_std = 0.03
W_lin = weight_init_std * cp.random.randn(3072, 10)
b_lin = cp.zeros(10)
alpha = 0.01
for i in range(100000):
batch_mask = cp.random.choice(train_size, batch_size)
x_batch = x_train[batch_mask]
t_batch = t_train[batch_mask]
# h = cp.dot(x_batch,FA_W1) + FA_b1
# h = cp.tanh(h)
output = softmax(cp.dot(x_batch, W_lin) + b_lin)
delta = (output - t_batch) / batch_size
delta_W_lin = cp.dot(x_batch.T, delta)
delta_b_lin = cp.dot(cp.ones(batch_size), delta)
W_lin -= alpha * delta_W_lin
b_lin -= alpha * delta_b_lin
if i % 100 == 0:
# h = cp.dot(x_test, FA_W1) + FA_b1
# h = cp.tanh(h)
output = softmax(cp.dot(x_test, W_lin) + b_lin)
y = cp.argmax(output, axis=1)
t = cp.argmax(t_test, axis=1)
accuracy = cp.sum(y == t) / 10000
# print(accuracy)
output = softmax(cp.dot(x_train, W_lin) + b_lin)
y = cp.argmax(output, axis=1)
t = cp.argmax(t_train, axis=1)
train_accuracy = cp.sum(y == t) / 50000
def test_image_less_than_mask():
"""Test reconstruction where the image is uniform and less than mask"""
image = cp.ones((5, 5))
mask = cp.ones((5, 5)) * 2
assert_array_almost_equal(reconstruction(image, mask), 1)
def testOrderC(self):
sbuf = cupy.ones([3, 2])
rbuf = cupy.zeros([3, 2])
Sendrecv(sbuf, rbuf)
self.assertTrue((sbuf == rbuf).all())
def confusion_matrix(y_true,
y_pred,
labels=None,
sample_weight=None,
normalize=None,
convert_dtype=False) -> CumlArray:
"""Compute confusion matrix to evaluate the accuracy of a classification.
Parameters
----------
y_true : array-like (device or host) shape = (n_samples,)
or (n_samples, n_outputs)
Ground truth (correct) target values.
y_pred : array-like (device or host) shape = (n_samples,)
or (n_samples, n_outputs)
Estimated target values.
labels : array-like (device or host) shape = (n_classes,), optional
List of labels to index the matrix. This may be used to reorder or
select a subset of labels. If None is given, those that appear at least
once in y_true or y_pred are used in sorted order.
sample_weight : array-like (device or host) shape = (n_samples,), optional
Sample weights.
normalize : string in [‘true’, ‘pred’, ‘all’]
Normalizes confusion matrix over the true (rows), predicted (columns)
conditions or all the population. If None, confusion matrix will not be
normalized.
convert_dtype : bool, optional (default = False)
When set to True, the confusion matrix method will automatically
convert the predictions, ground truth, and labels arrays to np.int32.
Returns
-------
C : array-like (device or host) shape = (n_classes, n_classes)
Confusion matrix.
"""
y_true, n_rows, n_cols, dtype = \
input_to_cuml_array(y_true, check_dtype=[cp.int32, cp.int64],
convert_to_dtype=(cp.int32 if convert_dtype
else None))
y_pred, _, _, _ = \
input_to_cuml_array(y_pred, check_dtype=[cp.int32, cp.int64],
check_rows=n_rows, check_cols=n_cols,
convert_to_dtype=(cp.int32 if convert_dtype
else None))
if labels is None:
labels = sorted_unique_labels(y_true, y_pred)
n_labels = len(labels)
else:
labels, n_labels, _, _ = \
input_to_cupy_array(labels, check_dtype=[cp.int32, cp.int64],
convert_to_dtype=(cp.int32 if convert_dtype
else None), check_cols=1)
if sample_weight is None:
sample_weight = cp.ones(n_rows, dtype=dtype)
else:
sample_weight, _, _, _ = \
input_to_cupy_array(sample_weight,
check_dtype=[cp.float32, cp.float64,
cp.int32, cp.int64],
check_rows=n_rows, check_cols=n_cols)
if normalize not in ['true', 'pred', 'all', None]:
msg = "normalize must be one of " \
f"{{'true', 'pred', 'all', None}}, got {normalize}."
raise ValueError(msg)
with using_output_type("cupy"):
y_true, _ = make_monotonic(y_true, labels, copy=True)
y_pred, _ = make_monotonic(y_pred, labels, copy=True)
# intersect y_pred, y_true with labels, eliminate items not in labels
ind = cp.logical_and(y_pred < n_labels, y_true < n_labels)
y_pred = y_pred[ind]
y_true = y_true[ind]
sample_weight = sample_weight[ind]
cm = cupyx.scipy.sparse.coo_matrix((sample_weight, (y_true, y_pred)),
shape=(n_labels, n_labels),
dtype=np.float64).toarray()
# Choose the accumulator dtype to always have high precision
if sample_weight.dtype.kind in {'i', 'u', 'b'}:
cm = cm.astype(np.int64)
with np.errstate(all='ignore'):
if normalize == 'true':
cm = cp.divide(cm, cm.sum(axis=1, keepdims=True))
elif normalize == 'pred':
cm = cp.divide(cm, cm.sum(axis=0, keepdims=True))
elif normalize == 'all':
cm = cp.divide(cm, cm.sum())
cm = cp.nan_to_num(cm)
return cm
def transform(self, X):
"""
Transform X using one-hot encoding.
Parameters
----------
X : cudf.DataFrame or cupy.ndarray
The data to encode.
Returns
-------
X_out : sparse matrix if sparse=True else a 2-d array
Transformed input.
"""
self._check_is_fitted()
X = self._check_input(X)
cols, rows = list(), list()
col_idx = None
j = 0
try:
for feature in X.columns:
encoder = self._encoders[feature]
col_idx = encoder.transform(X[feature])
idx_to_keep = cp.asarray(col_idx.notnull().to_gpu_array())
col_idx = cp.asarray(col_idx.dropna().to_gpu_array())
# Simple test to auto upscale col_idx type as needed
# First, determine the maximum value we will add assuming
# monotonically increasing up to len(encoder.classes_)
# Ensure we dont go negative by clamping to 0
max_value = int(max(len(encoder.classes_) - 1, 0) + j)
# If we exceed the max value, upconvert
if (max_value > np.iinfo(col_idx.dtype).max):
col_idx = col_idx.astype(np.min_scalar_type(max_value))
logger.debug("Upconverting column: '{}', to dtype: '{}', \
to support up to {} classes".format(
feature, np.min_scalar_type(max_value), max_value))
# increase indices to take previous features into account
col_idx += j
# Filter out rows with null values
row_idx = cp.arange(len(X))[idx_to_keep]
if self.drop_idx_ is not None:
drop_idx = self.drop_idx_[feature] + j
mask = cp.ones(col_idx.shape, dtype=cp.bool)
mask[col_idx == drop_idx] = False
col_idx = col_idx[mask]
row_idx = row_idx[mask]
# account for dropped category in indices
col_idx[col_idx > drop_idx] -= 1
# account for dropped category in current cats number
j -= 1
j += len(encoder.classes_)
cols.append(col_idx)
rows.append(row_idx)
cols = cp.concatenate(cols)
rows = cp.concatenate(rows)
val = cp.ones(rows.shape[0], dtype=self.dtype)
ohe = cupyx.scipy.sparse.coo_matrix((val, (rows, cols)),
shape=(len(X), j),
dtype=self.dtype)
if not self.sparse:
ohe = ohe.toarray()
return ohe
except TypeError as e:
# Append to cols to include the column that threw the error
cols.append(col_idx)
# Build a string showing what the types are
input_types_str = ", ".join([str(x.dtype) for x in cols])
raise TypeError(
"A TypeError occurred while calculating column "
"category indices, most likely due to integer overflow. This "
"can occur when columns have a large difference in the number "
"of categories, resulting in different category code dtypes "
"for different columns."
"Calculated column code dtypes: {}.\n"
"Internal Error: {}".format(input_types_str, repr(e)))
def testOrderFortran(self):
sbuf = cupy.ones([3, 2]).T
rbuf = cupy.zeros([3, 2]).T
Sendrecv(sbuf, rbuf)
self.assertTrue((sbuf == rbuf).all())
def testNotContiguous(self):
sbuf = cupy.ones([3, 2])[:, 0]
rbuf = cupy.zeros([3])
self.assertRaises((BufferError, ValueError), Sendrecv, sbuf, rbuf)
def test_ones_like_reshape_cupy_only(self, dtype):
a = testing.shaped_arange((2, 3, 4), cupy, dtype)
b = cupy.ones_like(a, shape=self.shape)
c = cupy.ones(self.shape, dtype=dtype)
testing.assert_array_equal(b, c)
def testInhibition(self):
"""
Test if the firing number of coincidences after inhibition
equals spatial pooler numActiveColumnsPerInhArea.
"""
# Miscellaneous variables:
# n, w: n, w of encoders
# inputLen: Length of binary input
# synPermConnected: Spatial pooler synPermConnected
# synPermActiveInc: Spatial pooler synPermActiveInc
# connectPct: Initial connect percentage of permanences
# columnDimensions: Number of spatial pooler coincidences
# numActiveColumnsPerInhArea: Spatial pooler numActiveColumnsPerInhArea
# stimulusThreshold: Spatial pooler stimulusThreshold
# spSeed: Spatial pooler for initial permanences
# stimulusThresholdInh: Parameter for inhibition, default value 0.00001
# kDutyCycleFactor: kDutyCycleFactor for dutyCycleTieBreaker in
# Inhibition
# spVerbosity: Verbosity to print other sp initial parameters
# testIter: Testing iterations
n = 100
w = 15
inputLen = 300
columnDimensions = 2048
numActiveColumnsPerInhArea = 40
stimulusThreshold = 0
spSeed = 1956
stimulusThresholdInh = 0.00001
kDutyCycleFactor = 0.01
spVerbosity = 0
testIter = 100
spTest = SpatialPooler(
columnDimensions=(columnDimensions, 1),
inputDimensions=(1, inputLen),
potentialRadius=inputLen / 2,
numActiveColumnsPerInhArea=numActiveColumnsPerInhArea,
spVerbosity=spVerbosity,
stimulusThreshold=stimulusThreshold,
seed=spSeed
)
initialPermanence = spTest._initialPermanence()
spTest._masterPotentialM, spTest._masterPermanenceM = (
spTest._makeMasterCoincidences(spTest.numCloneMasters,
spTest._coincRFShape,
spTest.potentialPct,
initialPermanence,
spTest.random))
spTest._updateInhibitionObj()
boostFactors = cupy.ones(columnDimensions)
for i in range(testIter):
spTest._iterNum = i
# random binary input
input_ = cupy.zeros((1, inputLen))
nonzero = numpy.random.random(inputLen)
input_[0][cupy.where (nonzero < float(w)/float(n))] = 1
# overlap step
spTest._computeOverlapsFP(input_,
stimulusThreshold=spTest.stimulusThreshold)
spTest._overlaps *= boostFactors
onCellIndices = cupy.where(spTest._overlaps > 0)
spTest._onCells.fill(0)
spTest._onCells[onCellIndices] = 1
denseOn = spTest._onCells
# update _dutyCycleBeforeInh
spTest.dutyCyclePeriod = min(i + 1, 1000)
spTest._dutyCycleBeforeInh = (
(spTest.dutyCyclePeriod - 1) *
spTest._dutyCycleBeforeInh +denseOn) / spTest.dutyCyclePeriod
dutyCycleTieBreaker = spTest._dutyCycleAfterInh.copy()
dutyCycleTieBreaker *= kDutyCycleFactor
# inhibition step
numOn = spTest._inhibitionObj.compute(
spTest._overlaps + dutyCycleTieBreaker, spTest._onCellIndices,
stimulusThresholdInh, # stimulusThresholdInh
max(spTest._overlaps)/1000, # addToWinners
)
# update _dutyCycleAfterInh
spTest._onCells.fill(0)
onCellIndices = spTest._onCellIndices[0:numOn]
spTest._onCells[onCellIndices] = 1
denseOn = spTest._onCells
spTest._dutyCycleAfterInh = (((spTest.dutyCyclePeriod-1) *
spTest._dutyCycleAfterInh + denseOn) /
spTest.dutyCyclePeriod)
# learning step
spTest._adaptSynapses(onCellIndices, [], input_)
# update boostFactor
spTest._updateBoostFactors()
boostFactors = spTest._firingBoostFactors
# update dutyCycle and boost
if ((spTest._iterNum+1) % 50) == 0:
spTest._updateInhibitionObj()
spTest._updateMinDutyCycles(
spTest._dutyCycleBeforeInh,
spTest.minPctDutyCycleBeforeInh,
spTest._minDutyCycleBeforeInh)
spTest._updateMinDutyCycles(
spTest._dutyCycleAfterInh,
spTest.minPctDutyCycleAfterInh,
spTest._minDutyCycleAfterInh)
# test numOn and spTest.numActiveColumnsPerInhArea
self.assertEqual(numOn, spTest.numActiveColumnsPerInhArea,
"Error at input %s, actual numOn are: %i, "
"numActivePerInhAre is: %s" % (
i, numOn, numActiveColumnsPerInhArea))
def test_one_image_peak():
"""Test reconstruction with one peak pixel"""
image = cp.ones((5, 5))
image[2, 2] = 2
mask = cp.ones((5, 5)) * 3
assert_array_almost_equal(reconstruction(image, mask), 2)
def test_image_equals_mask():
"""Test reconstruction where the image and mask are the same"""
assert_array_almost_equal(
reconstruction(cp.ones((7, 5)), cp.ones((7, 5))), 1
)
def check_distribution(self, dist_func, loc_dtype, scale_dtype, dtype):
loc = cupy.ones(self.loc_shape, dtype=loc_dtype)
scale = cupy.ones(self.scale_shape, dtype=scale_dtype)
out = dist_func(loc, scale, self.shape, dtype)
self.assertEqual(self.shape, out.shape)
self.assertEqual(out.dtype, dtype)
def test_zero_image_one_mask():
"""Test reconstruction with an image of all zeros and a mask that's not"""
result = reconstruction(cp.zeros((10, 10)), cp.ones((10, 10)))
assert_array_almost_equal(result, 0)
def slogdet(a):
"""Returns sign and logarithm of the determinant of an array.
It calculates the natural logarithm of the determinant of a given value.
Args:
a (cupy.ndarray): The input matrix with dimension ``(..., N, N)``.
Returns:
tuple of :class:`~cupy.ndarray`:
It returns a tuple ``(sign, logdet)``. ``sign`` represents each
sign of the determinant as a real number ``0``, ``1`` or ``-1``.
'logdet' represents the natural logarithm of the absolute of the
determinant.
If the determinant is zero, ``sign`` will be ``0`` and ``logdet``
will be ``-inf``.
The shapes of both ``sign`` and ``logdet`` are equal to
``a.shape[:-2]``.
.. warning::
This function calls one or more cuSOLVER routine(s) which may yield
invalid results if input conditions are not met.
To detect these invalid results, you can set the `linalg`
configuration to a value that is not `ignore` in
:func:`cupyx.errstate` or :func:`cupyx.seterr`.
.. warning::
To produce the same results as :func:`numpy.linalg.slogdet` for
singular inputs, set the `linalg` configuration to `raise`.
.. seealso:: :func:`numpy.linalg.slogdet`
"""
_util._assert_stacked_2d(a)
_util._assert_stacked_square(a)
dtype, sign_dtype = _util.linalg_common_type(a)
logdet_dtype = numpy.dtype(sign_dtype.char.lower())
a_shape = a.shape
shape = a_shape[:-2]
n = a_shape[-2]
if a.size == 0:
# empty batch (result is empty, too) or empty matrices det([[]]) == 1
sign = cupy.ones(shape, sign_dtype)
logdet = cupy.zeros(shape, logdet_dtype)
return sign, logdet
lu, ipiv, dev_info = _decomposition._lu_factor(a, dtype)
# dev_info < 0 means illegal value (in dimensions, strides, and etc.) that
# should never happen even if the matrix contains nan or inf.
# TODO(kataoka): assert dev_info >= 0 if synchronization is allowed for
# debugging purposes.
diag = cupy.diagonal(lu, axis1=-2, axis2=-1)
logdet = cupy.log(cupy.abs(diag)).sum(axis=-1)
# ipiv is 1-origin
non_zero = cupy.count_nonzero(ipiv != cupy.arange(1, n + 1), axis=-1)
if dtype.kind == "f":
non_zero += cupy.count_nonzero(diag < 0, axis=-1)
# Note: sign == -1 ** (non_zero % 2)
sign = (non_zero % 2) * -2 + 1
if dtype.kind == "c":
sign = sign * cupy.prod(diag / cupy.abs(diag), axis=-1)
sign = sign.astype(dtype)
logdet = logdet.astype(logdet_dtype, copy=False)
singular = dev_info > 0
return (
cupy.where(singular, sign_dtype.type(0), sign).reshape(shape),
cupy.where(singular, logdet_dtype.type('-inf'), logdet).reshape(shape),
)
import cupy as xp
from chainer import Variable, gradient_check, testing
from sum_of_squared_error import *
batch_size = 32
n_input = 10
x_data = xp.random.randn(batch_size, n_input).astype(xp.float32)
t_data = xp.zeros(x_data.shape, dtype=xp.float32)
for i in range(batch_size):
t_data[i][xp.random.randint(n_input)] = 1
x = Variable(x_data)
t = Variable(t_data)
y = sum_of_squared_error(x, t)
# backward to compute dy/dx
y.grad = xp.ones(y.data.shape, dtype=xp.float32)
y.backward()
# compute numerical grad
f = lambda: (sum_of_squared_error(x_data, t_data).data, )
gx, = gradient_check.numerical_grad(f, (x.data, ), (y.grad, ))
testing.assert_allclose(gx, x.grad)
def cupy_ones(*args, **kwargs):
return cupy.ones(*args, **kwargs)
import numpy as np
import cupy
from chainer import cuda
def _mul_i():
return cuda.elementwise(
"raw T x", "raw T y",
"""
y[i] = x[i]
""",
"muli")
o = cupy.ones((3,2,2))
y = cupy.zeros_like(o)
print _mul_i()(o,y, size=6)
def shift(input,
shift,
output=None,
order=3,
mode='constant',
cval=0.0,
prefilter=True):
"""Shift an array.
The array is shifted using spline interpolation of the requested order.
Points outside the boundaries of the input are filled according to the
given mode.
Args:
input (cupy.ndarray): The input array.
shift (float or sequence): The shift along the axes. If a float,
``shift`` is the same for each axis. If a sequence, ``shift``
should contain one value for each axis.
output (cupy.ndarray or ~cupy.dtype): The array in which to place the
output, or the dtype of the returned array.
order (int): The order of the spline interpolation, default is 3. Must
be in the range 0-5.
mode (str): Points outside the boundaries of the input are filled
according to the given mode (``'constant'``, ``'nearest'``,
``'mirror'``, ``'reflect'``, ``'wrap'``, ``'grid-mirror'``,
``'grid-wrap'``, ``'grid-constant'`` or ``'opencv'``).
cval (scalar): Value used for points outside the boundaries of
the input if ``mode='constant'`` or ``mode='opencv'``. Default is
0.0
prefilter (bool): It is not used yet. It just exists for compatibility
with :mod:`scipy.ndimage`.
Returns:
cupy.ndarray or None:
The shifted input.
.. seealso:: :func:`scipy.ndimage.shift`
"""
_check_parameter('shift', order, mode)
shift = _util._fix_sequence_arg(shift, input.ndim, 'shift', float)
if mode == 'opencv':
mode = '_opencv_edge'
output = affine_transform(
input,
cupy.ones(input.ndim, input.dtype),
cupy.negative(cupy.asarray(shift)),
None,
output,
order,
mode,
cval,
prefilter,
)
else:
output = _util._get_output(output, input)
if input.dtype.kind in 'iu':
input = input.astype(cupy.float32)
filtered, nprepad = _filter_input(input, prefilter, mode, cval, order)
integer_output = output.dtype.kind in 'iu'
_util._check_cval(mode, cval, integer_output)
large_int = _prod(input.shape) > 1 << 31
kern = _interp_kernels._get_shift_kernel(input.ndim,
large_int,
input.shape,
mode,
cval=cval,
order=order,
integer_output=integer_output,
nprepad=nprepad)
shift = cupy.asarray(shift, dtype=cupy.float64, order='C')
if shift.ndim != 1:
raise ValueError('shift must be 1d')
if shift.size != filtered.ndim:
raise ValueError('len(shift) must equal input.ndim')
kern(filtered, shift, output)
return output
def conv(x, w, b, count=1, x_nhwc=False, w_nhwc=False):
y_shape = (bsize, ochan, ow, oh)
d_layout = cudnn.CUDNN_TENSOR_NCHW
w_layout = cudnn.CUDNN_TENSOR_NCHW
if x_nhwc:
d_layout = cudnn.CUDNN_TENSOR_NHWC
x = np.transpose(x, (0, 2, 3, 1))
y_shape = (bsize, ow, oh, ochan)
if w_nhwc:
w_layout = cudnn.CUDNN_TENSOR_NHWC
w = np.transpose(w, (0, 2, 3, 1))
x = cupy.array(x)
w = cupy.array(w)
b = cupy.array(b)
y = cupy.ones(y_shape, dtype=x.dtype)
times = [time.time()]
for _ in range(count):
cupy.cudnn.convolution_forward(x, w, b, y, (0, 0), (1, 1), (1, 1), 1,
auto_tune=True, tensor_core='auto',
d_layout=d_layout, w_layout=w_layout)
cupy.cuda.device.Device().synchronize()
times.append(time.time())
if count > 1:
print('Elapsed:', (times[-1] - times[1]) / (count - 1))
y = chainer.cuda.to_cpu(y)
if x_nhwc:
y = np.transpose(y, (0, 3, 1, 2))
return y