public void PowerLayer_Backward(double power, double scale, double shift)
{
var config = new PowerLayerConfiguration(power, scale, shift);
var layer = new PowerLayer(config);
if (power != 0 && power != 1 && power != 2)
{
var minValue = -shift / scale;
using (var bottomCpu = bottom.OnCpu())
{
var bottomData = bottomCpu.Data;
for (int i = 0; i < bottom.Count; i++)
{
if (bottomData[i] < minValue)
{
bottomData[i] = minValue + (minValue - bottomData[i]);
}
}
}
}
var checker = new GradientChecker(1e-2f, 1e-2f, 1701, 0.0d, 0.01f);
checker.CheckEltwise(layer, bottom, top);
}
public void PowerLayer_Forward(double power, double scale, double shift)
{
var config = new PowerLayerConfiguration(power, scale, shift);
var layer = new PowerLayer(config);
layer.Setup(bottom, top);
layer.Forward(bottom, top);
using (var topCpu = top.OnCpu())
using (var bottomCpu = bottom.OnCpu())
{
double minPrecision = 1e-5f;
// Now, check values
int count = bottomCpu.Data.Count;
for (int i = 0; i < count; i++)
{
var expectedValue = Math.Pow(shift + scale * bottomCpu.DataAt(i), power);
if (power == 0 || power == 1 || power == 2)
{
Assert.False(double.IsNaN(topCpu.DataAt(i)));
}
if (double.IsNaN(expectedValue))
{
Assert.True(double.IsNaN(topCpu.DataAt(i)));
}
else
{
double precision = Math.Max(Math.Abs(expectedValue * 1e-4f), minPrecision);
Assert.True(MathHelpers.Equality(expectedValue, topCpu.DataAt(i), precision));
}
}
}
}
public void PowerLayer_Backward(double power, double scale, double shift)
{
var config = new PowerLayerConfiguration(power, scale, shift);
var layer = new PowerLayer(config);
if ( power != 0 && power != 1 && power != 2 )
{
var minValue = -shift / scale;
using (var bottomCpu = bottom.OnCpu())
{
var bottomData = bottomCpu.Data;
for (int i = 0; i < bottom.Count; i++)
{
if (bottomData[i] < minValue)
bottomData[i] = minValue + (minValue - bottomData[i]);
}
}
}
var checker = new GradientChecker(1e-2f, 1e-2f, 1701, 0.0d, 0.01f);
checker.CheckEltwise(layer, bottom, top);
}
public void PowerLayer_Forward(double power, double scale, double shift)
{
var config = new PowerLayerConfiguration(power, scale, shift);
var layer = new PowerLayer(config);
layer.Setup(bottom, top);
layer.Forward(bottom, top);
using (var topCpu = top.OnCpu())
using (var bottomCpu = bottom.OnCpu())
{
double minPrecision = 1e-5f;
// Now, check values
int count = bottomCpu.Data.Count;
for (int i = 0; i < count; i++)
{
var expectedValue = Math.Pow(shift + scale * bottomCpu.DataAt(i), power);
if (power == 0 || power == 1 || power == 2)
Assert.False(double.IsNaN(topCpu.DataAt(i)));
if (double.IsNaN(expectedValue))
Assert.True(double.IsNaN(topCpu.DataAt(i)));
else
{
double precision = Math.Max(Math.Abs(expectedValue * 1e-4f), minPrecision);
Assert.True(MathHelpers.Equality(expectedValue, topCpu.DataAt(i), precision));
}
}
}
}
