From ce97c370ffc9bfcd296da816099edc3e49cf3a2e Mon Sep 17 00:00:00 2001 From: Feiyu Chan Date: Tue, 28 Apr 2020 01:26:54 +0800 Subject: [PATCH] Cherry pick: add reshape in paddle.complex (#24210) * add reshape in paddle.complex, test=develop * fix typos in paddle.complex.kron's comment, fix unittest, test=release-2.0 --- python/paddle/complex/tensor/__init__.py | 3 + python/paddle/complex/tensor/manipulation.py | 106 ++++++++++++++++++ .../tests/unittests/test_complex_reshape.py | 51 +++++++++ 3 files changed, 160 insertions(+) create mode 100644 python/paddle/complex/tensor/manipulation.py create mode 100644 python/paddle/fluid/tests/unittests/test_complex_reshape.py diff --git a/python/paddle/complex/tensor/__init__.py b/python/paddle/complex/tensor/__init__.py index 28bc681431a..d1726384d1b 100644 --- a/python/paddle/complex/tensor/__init__.py +++ b/python/paddle/complex/tensor/__init__.py @@ -13,6 +13,9 @@ # limitations under the License. from . import math +from . import manipulation from .math import * +from .manipulation import * __all__ = math.__all__ + [] +__all__ += manipulation.__all__ diff --git a/python/paddle/complex/tensor/manipulation.py b/python/paddle/complex/tensor/manipulation.py new file mode 100644 index 00000000000..c7201ea5de8 --- /dev/null +++ b/python/paddle/complex/tensor/manipulation.py @@ -0,0 +1,106 @@ +# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve. +# +# Licensed 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. + +from paddle.common_ops_import import * +from ..helper import is_complex, is_real, complex_variable_exists +from ...fluid.framework import ComplexVariable +from ...fluid import layers + +__all__ = ['reshape', ] + + +def reshape(x, shape, inplace=False, name=None): + """ + To change the shape of ``x`` without changing its data. + + There are some tricks when specifying the target shape. + + 1. -1 means the value of this dimension is inferred from the total element + number of x and remaining dimensions. Thus one and only one dimension can + be set -1. + + 2. 0 means the actual dimension value is going to be copied from the + corresponding dimension of x. The index of 0s in shape can not exceed + the dimension of x. + + Here are some examples to explain it. + + 1. Given a 3-D tensor x with a shape [2, 4, 6], and the target shape + is [6, 8], the reshape operator will transform x into a 2-D tensor with + shape [6, 8] and leaving x's data unchanged. + + 2. Given a 3-D tensor x with a shape [2, 4, 6], and the target shape + specified is [2, 3, -1, 2], the reshape operator will transform x into a + 4-D tensor with shape [2, 3, 4, 2] and leaving x's data unchanged. In this + case, one dimension of the target shape is set to -1, the value of this + dimension is inferred from the total element number of x and remaining + dimensions. + + 3. Given a 3-D tensor x with a shape [2, 4, 6], and the target shape + is [-1, 0, 3, 2], the reshape operator will transform x into a 4-D tensor + with shape [2, 4, 3, 2] and leaving x's data unchanged. In this case, + besides -1, 0 means the actual dimension value is going to be copied from + the corresponding dimension of x. + + Args: + x(ComplexVariable): the input. A ``Tensor`` or ``LoDTensor`` , data + type: ``complex64`` or ``complex128``. + shape(list|tuple|Variable): target shape. At most one dimension of + the target shape can be -1. If ``shape`` is a list or tuple, the + elements of it should be integers or Tensors with shape [1] and + data type ``int32``. If ``shape`` is an Variable, it should be + an 1-D Tensor of data type ``int32``. + inplace(bool, optional): If ``inplace`` is True, the output of + ``reshape`` is the same ComplexVariable as the input. Otherwise, + the input and output of ``reshape`` are different + ComplexVariables. Defaults to False. Note that if ``x``is more + than one OPs' input, ``inplace`` must be False. + name(str, optional): The default value is None. Normally there is no + need for user to set this property. For more information, please + refer to :ref:`api_guide_Name` . + + Returns: + ComplexVariable: A ``Tensor`` or ``LoDTensor``. The data type is same as ``x``. It is a new ComplexVariable if ``inplace`` is ``False``, otherwise it is ``x``. + + Raises: + ValueError: If more than one elements of ``shape`` is -1. + ValueError: If the element of ``shape`` is 0, the corresponding dimension should be less than or equal to the dimension of ``x``. + ValueError: If the elements in ``shape`` is negative except -1. + + Examples: + .. code-block:: python + + import paddle.fluid as fluid + import paddle.complex as cpx + import paddle.fluid.dygraph as dg + import numpy as np + + x_np = np.random.randn(2, 3, 4) + 1j * np.random.randn(2, 3, 4) + + place = fluid.CPUPlace() + with dg.guard(place): + x_var = dg.to_variable(x_np) + y_var = cpx.reshape(x_var, (2, -1)) + y_np = y_var.numpy() + print(y_np.shape) + # (2, 12) +""" + complex_variable_exists([x], "reshape") + if inplace: + x.real = fluid.layers.reshape(x.real, shape, inplace=inplace, name=name) + x.imag = fluid.layers.reshape(x.imag, shape, inplace=inplace, name=name) + return x + out_real = fluid.layers.reshape(x.real, shape, inplace=inplace, name=name) + out_imag = fluid.layers.reshape(x.imag, shape, inplace=inplace, name=name) + return ComplexVariable(out_real, out_imag) diff --git a/python/paddle/fluid/tests/unittests/test_complex_reshape.py b/python/paddle/fluid/tests/unittests/test_complex_reshape.py new file mode 100644 index 00000000000..4b1370a56e3 --- /dev/null +++ b/python/paddle/fluid/tests/unittests/test_complex_reshape.py @@ -0,0 +1,51 @@ +# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +# +# Licensed 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 paddle.fluid as fluid +import paddle.complex as cpx +import paddle.fluid.dygraph as dg +import numpy as np +import unittest + + +class TestComplexReshape(unittest.TestCase): + def test_case1(self): + x_np = np.random.randn(2, 3, 4) + 1j * np.random.randn(2, 3, 4) + shape = (2, -1) + + place = fluid.CPUPlace() + with dg.guard(place): + x_var = dg.to_variable(x_np) + y_var = cpx.reshape(x_var, shape) + y_np = y_var.numpy() + + np.testing.assert_allclose(np.reshape(x_np, shape), y_np) + + def test_case2(self): + x_np = np.random.randn(2, 3, 4) + 1j * np.random.randn(2, 3, 4) + shape = (0, -1) + shape_ = (2, 12) + + place = fluid.CUDAPlace(0) if fluid.is_compiled_with_cuda( + ) else fluid.CPUPlace() + with dg.guard(place): + x_var = dg.to_variable(x_np) + y_var = cpx.reshape(x_var, shape, inplace=True) + y_np = y_var.numpy() + + np.testing.assert_allclose(np.reshape(x_np, shape_), y_np) + + +if __name__ == "__main__": + unittest.main() -- GitLab