You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.5 KiB
46 lines
1.5 KiB
3 years ago
|
# Copyright (c) 2021 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.
|
||
|
|
"""Positionwise feed forward layer definition."""
|
||
|
|
import paddle
|
||
|
|
|
||
|
|
|
||
|
|
class PositionwiseFeedForward(paddle.nn.Layer):
|
||
|
|
"""Positionwise feed forward layer.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
idim : int
|
||
|
|
Input dimenstion.
|
||
|
|
hidden_units : int
|
||
|
|
The number of hidden units.
|
||
|
|
dropout_rate : float
|
||
|
|
Dropout rate.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self,
|
||
|
|
idim,
|
||
|
|
hidden_units,
|
||
|
|
dropout_rate,
|
||
|
|
activation=paddle.nn.ReLU()):
|
||
|
|
"""Construct an PositionwiseFeedForward object."""
|
||
|
|
super(PositionwiseFeedForward, self).__init__()
|
||
|
|
self.w_1 = paddle.nn.Linear(idim, hidden_units, bias_attr=True)
|
||
|
|
self.w_2 = paddle.nn.Linear(hidden_units, idim, bias_attr=True)
|
||
|
|
self.dropout = paddle.nn.Dropout(dropout_rate)
|
||
|
|
self.activation = activation
|
||
|
|
|
||
|
|
def forward(self, x):
|
||
|
|
"""Forward funciton."""
|
||
|
|
return self.w_2(self.dropout(self.activation(self.w_1(x))))
|