Refactoring laplace random operator.

mindspore/ops/_op_impl/aicpu/__init__.py

@@ -41,7 +41,7 @@ from .gamma import _gamma_aicpu
 from .poisson import _poisson_aicpu
 from .uniform_int import _uniform_int_aicpu
 from .uniform_real import _uniform_real_aicpu
-from .laplace import _laplace_aicpu
+from .standard_laplace import _standard_laplace_aicpu
 from .strided_slice import _strided_slice_aicpu
 from .strided_slice_grad import _strided_slice_grad_aicpu
 from .end_of_sequence import _end_of_sequence_aicpu

mindspore/ops/_op_impl/aicpu/standard_laplace.py

@@ -16,18 +16,17 @@
 """RandomLaplace op"""
 from mindspore.ops.op_info_register import op_info_register, AiCPURegOp, DataType
 
-laplace_op_info = AiCPURegOp("Laplace") \
+laplace_op_info = AiCPURegOp("StandardLaplace") \
     .fusion_type("OPAQUE") \
     .input(0, "shape", "required") \
-    .input(1, "mean", "required") \
-    .input(2, "lambda_param", "required") \
     .output(0, "output", "required") \
     .attr("seed", "int") \
-    .dtype_format(DataType.I32_Default, DataType.F32_Default, DataType.F32_Default, DataType.F32_Default) \
-    .dtype_format(DataType.I32_NCHW, DataType.F32_NCHW, DataType.F32_NCHW, DataType.F32_NCHW) \
+    .attr("seed2", "int") \
+    .dtype_format(DataType.I32_Default, DataType.F32_Default) \
+    .dtype_format(DataType.I32_NCHW, DataType.F32_NCHW) \
     .get_op_info()
 
 @op_info_register(laplace_op_info)
-def _laplace_aicpu():
+def _standard_laplace_aicpu():
     """RandomLaplace AiCPU register"""
     return

mindspore/ops/composite/__init__.py

@@ -26,7 +26,7 @@ from .clip_ops import clip_by_value
 from .multitype_ops.add_impl import hyper_add
 from .multitype_ops.ones_like_impl import ones_like
 from .multitype_ops.zeros_like_impl import zeros_like
-from .random_ops import normal, uniform, gamma, poisson, multinomial
+from .random_ops import normal, laplace, uniform, gamma, poisson, multinomial
 
 
 __all__ = [
@@ -42,6 +42,7 @@ __all__ = [
     'ones_like',
     'zip_operation',
     'normal',
+    'laplace',
     'uniform',
     'gamma',
     'poisson',

mindspore/ops/composite/random_ops.py

@@ -76,6 +76,44 @@ def normal(shape, mean, stddev, seed=0):
     value = random_normal * stddev + mean
     return value
 
+def laplace(shape, mean, lambda_param, seed=0):
+    r"""
+    Generates random numbers according to the Laplace random number distribution.
+    It is defined as:
+
+    .. math::
+        \text{f}(x;μ,λ) = \frac{1}{2λ}\exp(-\frac{|x-μ|}{λ}),
+
+    Args:
+        shape (tuple): The shape of random tensor to be generated.
+        mean (Tensor): The mean μ distribution parameter, which specifies the location of the peak.
+          With float32 data type.
+        lambda_param (Tensor): The parameter used for controling the variance of this random distribution. The
+          variance of Laplace distribution is equal to twice the square of lambda_param. With float32 data type.
+        seed (int): Seed is used as entropy source for Random number engines generating pseudo-random numbers.
+          Default: 0.
+
+    Returns:
+        Tensor. The shape should be the broadcasted shape of Input "shape" and shapes of mean and lambda_param.
+        The dtype is float32.
+
+    Examples:
+        >>> shape = (4, 16)
+        >>> mean = Tensor(1.0, mstype.float32)
+        >>> lambda_param = Tensor(1.0, mstype.float32)
+        >>> output = C.laplace(shape, mean, lambda_param, seed=5)
+    """
+    mean_dtype = F.dtype(mean)
+    lambda_param_dtype = F.dtype(lambda_param)
+    const_utils.check_tensors_dtype_same(mean_dtype, mstype.float32, "laplace")
+    const_utils.check_tensors_dtype_same(lambda_param_dtype, mstype.float32, "laplace")
+    seed1 = get_seed()
+    seed2 = seed
+    stdlaplace = P.StandardLaplace(seed1, seed2)
+    rnd = stdlaplace(shape)
+    value = rnd * lambda_param + mean
+    return value
+
 def uniform(shape, minval, maxval, seed=0, dtype=mstype.float32):
     """
     Generates random numbers according to the Uniform random number distribution.

mindspore/ops/operations/__init__.py

@@ -57,7 +57,7 @@ from .math_ops import (Abs, ACos, Asin, Asinh, AddN, AccumulateNV2, AssignAdd, A
                        Square, Sub, TensorAdd, Sign, Round, SquareSumAll, Atan, Atanh, Cosh, Sinh, Eps, Tan)
 
 from .random_ops import (RandomChoiceWithMask, StandardNormal, Gamma, Poisson, UniformInt, UniformReal,
-                         RandomCategorical, Laplace, Multinomial)
+                         RandomCategorical, StandardLaplace, Multinomial)
 from .nn_ops import (LSTM, SGD, Adam, FusedSparseAdam, FusedSparseLazyAdam, ApplyMomentum, BatchNorm,
                      BiasAdd, Conv2D,
                      DepthwiseConv2dNative,
@@ -193,7 +193,7 @@ __all__ = [
     'Poisson',
     'UniformInt',
     'UniformReal',
-    'Laplace',
+    'StandardLaplace',
     'RandomCategorical',
     'ResizeBilinear',
     'ScalarSummary',

mindspore/ops/operations/random_ops.py

@@ -63,60 +63,52 @@ class StandardNormal(PrimitiveWithInfer):
         return out
 
 
-class Laplace(PrimitiveWithInfer):
+class StandardLaplace(PrimitiveWithInfer):
     r"""
-    Generates random numbers according to the Laplace random number distribution.
+    Generates random numbers according to the Laplace random number distribution (mean=0, lambda=1).
     It is defined as:
 
     .. math::
-        \text{f}(x;μ,λ) = \frac{1}{2λ}\exp(-\frac{|x-μ|}{λ}),
+        \text{f}(x;0,1) = \frac{1}{2}\exp(-|x|),
 
     Args:
-        seed (int): Seed data is used as entropy source for Random number engines to generate pseudo-random numbers.
-          Default: 0.
+        seed (int): Random seed. Default: 0.
+        seed2 (int): Random seed2. Default: 0.
 
     Inputs:
         - **shape** (tuple) - The shape of random tensor to be generated. Only constant value is allowed.
-        - **mean** (Tensor) - The mean μ distribution parameter, which specifies the location of the peak.
-          With float32 data type.
-        - **lambda_param** (Tensor) - The parameter used for controling the variance of this random distribution. The
-          variance of Laplace distribution is equal to twice the square of lambda_param. With float32 data type.
 
     Outputs:
-        Tensor, has the specified shape and its dtype is float32.
+        Tensor. The shape that the input 'shape' denotes. The dtype is float32.
 
     Examples:
         >>> shape = (4, 16)
-        >>> mean = Tensor(1.0, mstype.float32)
-        >>> lambda_param = Tensor(1.0, mstype.float32)
-        >>> laplace = P.Laplace(seed=2)
-        >>> output = laplace(shape, mean, lambda_param)
+        >>> stdlaplace = P.StandardLaplace(seed=2)
+        >>> output = stdlaplace(shape)
     """
 
     @prim_attr_register
-    def __init__(self, seed=0):
-        """Init Laplace"""
-        self.init_prim_io_names(inputs=['shape', 'mean', 'lambda_param'], outputs=['output'])
+    def __init__(self, seed=0, seed2=0):
+        """Init StandardLaplace"""
+        self.init_prim_io_names(inputs=['shape'], outputs=['output'])
         validator.check_value_type('seed', seed, [int], self.name)
+        validator.check_value_type('seed2', seed2, [int], self.name)
 
-    def __infer__(self, shape, mean, lambda_param):
+    def __infer__(self, shape):
         shape_v = shape["value"]
         if shape_v is None:
             raise ValueError(f"For {self.name}, shape must be const.")
         validator.check_value_type("shape", shape_v, [tuple], self.name)
         for i, shape_i in enumerate(shape_v):
             validator.check_integer("shape[%d]" % i, shape_i, 0, Rel.GT, self.name)
-        validator.check_tensor_type_same({"mean": mean["dtype"]}, [mstype.float32], self.name)
-        validator.check_tensor_type_same({"lambda_param": lambda_param["dtype"]}, [mstype.float32], self.name)
-        broadcast_shape = get_broadcast_shape(mean['shape'], lambda_param['shape'], self.name)
-        broadcast_shape = get_broadcast_shape(broadcast_shape, shape_v, self.name)
         out = {
-            'shape': broadcast_shape,
+            'shape': shape_v,
             'dtype': mstype.float32,
             'value': None}
         return out
 
 
+
 class Gamma(PrimitiveWithInfer):
     r"""
     Produces random positive floating-point values x, distributed according to probability density function:

tests/st/ops/ascend/test_aicpu_ops/test_standard_laplace.py

@@ -12,46 +12,30 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ============================================================================
-import numpy as np
 
 import mindspore.context as context
 import mindspore.nn as nn
-from mindspore import Tensor
 from mindspore.ops import operations as P
-from mindspore.common import dtype as mstype
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
 
 class Net(nn.Cell):
-    def __init__(self, shape, seed=0):
+    def __init__(self, shape, seed=0, seed2=0):
         super(Net, self).__init__()
-        self.laplace = P.Laplace(seed=seed)
         self.shape = shape
+        self.seed = seed
+        self.seed2 = seed2
+        self.stdlaplace = P.StandardLaplace(seed, seed2)
 
-    def construct(self, mean, lambda_param):
-        return self.laplace(self.shape, mean, lambda_param)
+    def construct(self):
+        return self.stdlaplace(self.shape)
 
 
-def test_net_1D():
+def test_net():
     seed = 10
+    seed2 = 10
     shape = (3, 2, 4)
-    mean = 1.0
-    lambda_param = 1.0
-    net = Net(shape, seed)
-    tmean, tlambda_param = Tensor(mean, mstype.float32), Tensor(lambda_param, mstype.float32)
-    output = net(tmean, tlambda_param)
-    print(output.asnumpy())
+    net = Net(shape, seed, seed2)
+    output = net()
     assert output.shape == (3, 2, 4)
-
-
-def test_net_ND():
-    seed = 10
-    shape = (3, 1, 2)
-    mean = np.array([[[1], [2]], [[3], [4]], [[5], [6]]]).astype(np.float32)
-    lambda_param = np.array([1.0]).astype(np.float32)
-    net = Net(shape, seed)
-    tmean, tlambda_param = Tensor(mean), Tensor(lambda_param)
-    output = net(tmean, tlambda_param)
-    print(output.asnumpy())
-    assert output.shape == (3, 2, 2)

tests/ut/python/ops/test_ops.py

@@ -585,11 +585,11 @@ class NormalNet(nn.Cell):
 class LaplaceNet(nn.Cell):
     def __init__(self, shape=None, seed=0):
         super(LaplaceNet, self).__init__()
-        self.laplace = P.Laplace(seed=seed)
         self.shape = shape
+        self.seed = seed
 
     def construct(self, mean, lambda_param):
-        out = self.laplace(self.shape, mean, lambda_param)
+        out = C.laplace(self.shape, mean, lambda_param, self.seed)
         return out