54 lines
1.9 KiB
Scala
54 lines
1.9 KiB
Scala
|
/*******************************************************************************
|
||
|
|
* Copyright (c) 2015-2018 Skymind, Inc.
|
||
|
|
*
|
||
|
|
* This program and the accompanying materials are made available under the
|
||
|
|
* terms of the Apache License, Version 2.0 which is available at
|
||
|
|
* https://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.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
******************************************************************************/
|
||
|
|
package org.deeplearning4j.scalnet.layers.pooling
|
||
|
|
|
||
|
|
import org.deeplearning4j.nn.conf.layers.{ GlobalPoolingLayer, PoolingType }
|
||
|
|
import org.deeplearning4j.scalnet.layers.core.{ Layer, Node }
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 3D global avg pooling layer.
|
||
|
|
*
|
||
|
|
* @author Max Pumperla
|
||
|
|
*/
|
||
|
|
class GlobalAvgPooling3D(nIn: Option[List[Int]] = None, override val name: String = null) extends Node with Layer {
|
||
|
|
|
||
|
|
override def inputShape: List[Int] = nIn.getOrElse(List(0))
|
||
|
|
|
||
|
|
override def outputShape: List[Int] = {
|
||
|
|
val nOutChannels: Int =
|
||
|
|
if (inputShape.nonEmpty) inputShape.last
|
||
|
|
else 0
|
||
|
|
if (inputShape.lengthCompare(4) == 0) {
|
||
|
|
List[Int](inputShape.head, nOutChannels)
|
||
|
|
} else if (nOutChannels > 0) List(nOutChannels)
|
||
|
|
else List()
|
||
|
|
}
|
||
|
|
|
||
|
|
override def reshapeInput(nIn: List[Int]): GlobalAvgPooling3D =
|
||
|
|
new GlobalAvgPooling3D(Some(nIn), name)
|
||
|
|
|
||
|
|
override def compile: org.deeplearning4j.nn.conf.layers.Layer =
|
||
|
|
new GlobalPoolingLayer.Builder()
|
||
|
|
.poolingType(PoolingType.AVG)
|
||
|
|
.name(name)
|
||
|
|
.build()
|
||
|
|
}
|
||
|
|
|
||
|
|
object GlobalAvgPooling3D {
|
||
|
|
def apply(nIn: Option[List[Int]] = None, name: String = null): GlobalAvgPooling3D =
|
||
|
|
new GlobalAvgPooling3D(nIn, name)
|
||
|
|
}
|