public void SigmoidLayer_Setup()
{
var layer = new SigmoidLayer();
layer.Setup(bottom, top);
Assert.Equal(bottom.Num, top.Num);
Assert.Equal(bottom.Channels, top.Channels);
Assert.Equal(bottom.Height, top.Height);
Assert.Equal(bottom.Width, top.Width);
}
public void SigmoidLayer_Setup()
{
var layer = new SigmoidLayer();
layer.Setup(bottom, top);
Assert.Equal(bottom.Num, top.Num);
Assert.Equal(bottom.Channels, top.Channels);
Assert.Equal(bottom.Height, top.Height);
Assert.Equal(bottom.Width, top.Width);
}
public void SigmoidLayer_Forward()
{
var layer = new SigmoidLayer();
layer.Setup(bottom, top);
layer.Forward(bottom, top);
Assert.Equal(bottom.Count, top.Count);
using (var topCpu = top.OnCpu())
using (var bottomCpu = bottom.OnCpu())
{
int count = bottom.Count;
for (int i = 0; i < count; i++)
{
Assert.True(MathHelpers.Equality(topCpu.DataAt(i), 1.0d / (1.0d + Math.Exp(-bottomCpu.DataAt(i)))));
// check that we squashed the value between 0 and 1
Assert.True(topCpu.DataAt(i) >= 0.0d);
Assert.True(topCpu.DataAt(i) <= 1.0d);
};
}
}
public void SigmoidLayer_Forward()
{
var layer = new SigmoidLayer();
layer.Setup(bottom, top);
layer.Forward(bottom, top);
Assert.Equal(bottom.Count, top.Count);
using (var topCpu = top.OnCpu())
using (var bottomCpu = bottom.OnCpu())
{
int count = bottom.Count;
for (int i = 0; i < count; i++)
{
Assert.True(MathHelpers.Equality(topCpu.DataAt(i), 1.0d / (1.0d + Math.Exp(-bottomCpu.DataAt(i)))));
// check that we squashed the value between 0 and 1
Assert.True(topCpu.DataAt(i) >= 0.0d);
Assert.True(topCpu.DataAt(i) <= 1.0d);
}
;
}
}
