prelu

paddle.static.nn. prelu ( x, mode, param_attr=None, data_format='NCHW', name=None ) [source]

prelu activation.

\[prelu(x) = max(0, x) + \alpha * min(0, x)\]

There are three modes for the activation:

all: All elements share same alpha.
channel: Elements in same channel share same alpha.
element: All elements do not share alpha. Each element has its own alpha.
Parameters

  • x (Tensor) – The input Tensor or LoDTensor with data type float32.

  • mode (str) – The mode for weight sharing.

  • param_attr (ParamAttr|None, optional) – The parameter attribute for the learnable

  • weight (alpha) –

  • information (For detailed) –

System Message: WARNING/2 (/usr/local/lib/python3.8/site-packages/paddle/fluid/layers/nn.py:docstring of paddle.fluid.layers.nn.prelu, line 23)

Field list ends without a blank line; unexpected unindent.

:param please refer to api_fluid_ParamAttr.: :param name: Name for the operation (optional, default is None). :type name: str, optional :param For more information: :param please refer to Name.: :param data_format: Data format that specifies the layout of input.

System Message: ERROR/3 (/usr/local/lib/python3.8/site-packages/paddle/fluid/layers/nn.py:docstring of paddle.fluid.layers.nn.prelu, line 29)

Unexpected indentation.

It may be “NC”, “NCL”, “NCHW”, “NCDHW”, “NLC”, “NHWC” or “NDHWC”. Default: “NCHW”.

System Message: WARNING/2 (/usr/local/lib/python3.8/site-packages/paddle/fluid/layers/nn.py:docstring of paddle.fluid.layers.nn.prelu, line 30)

Block quote ends without a blank line; unexpected unindent.

Returns

A tensor with the same shape and data type as x.

Return type

Tensor

Examples

import paddle

x = paddle.to_tensor([-1., 2., 3.])
param = paddle.ParamAttr(initializer=paddle.nn.initializer.Constant(0.2))
out = paddle.static.nn.prelu(x, 'all', param)
# [-0.2, 2., 3.]