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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package com.lewuathe.dllib.layer
import breeze.linalg.{DenseMatrix, Matrix}
import breeze.plot._
import com.lewuathe.dllib.model.{InMemoryModel, Model}
trait Visualizable extends Layer {
def vizWeight(outputPath: String, model: Model): Unit = {
val weight = model.getWeight(id).get.value
convertToImage(outputPath, weight)
}
private def convertToImage(outputPath: String,
weight: Matrix[Double]): Unit = {
val fWeight = Figure()
val denseWeight: DenseMatrix[Double] = weight.toDenseMatrix
for (i <- 0 until denseWeight.rows) {
val (outputHeight, outputWidth) = calculateWindow(outputSize)
val (inputHeight, inputWidth) = calculateWindow(inputSize)
val reshaped =
denseWeight(i, ::).t.toDenseMatrix.reshape(inputHeight, inputWidth)
fWeight.subplot(outputHeight, outputWidth, i) += image(reshaped)
}
fWeight.saveas(outputPath)
}
/**
* Calculate visualizable window size
*
* @return
*/
private def calculateWindow(size: Int): (Int, Int) = {
val height = Math.sqrt(size)
val width = size / height
(height.toInt, width.toInt)
}
}
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