public void BiasBackward()
{
var outputGradient = new Double.Volume(
new[]
{
1.0, 2.0,
3.0, 1.0,
2.0, 3.0
},
new Shape(2, 1, 3, 1));
var biasGradient = BuilderInstance <double> .Volume.SameAs(new Shape(1, 1, 3, 1));
outputGradient.BiasGradient(biasGradient);
Assert.AreEqual(3.0, biasGradient.Get(0, 0, 0, 0));
Assert.AreEqual(4.0, biasGradient.Get(0, 0, 1, 0));
Assert.AreEqual(5.0, biasGradient.Get(0, 0, 2, 0));
}
public void BiasBackwardBatch()
{
var outputGradient = new Double.Volume(
new[]
{
1.0, 2.0,
3.0, 1.0,
2.0, 3.0,
1.0, 2.0,
3.0, 1.0,
2.0, 3.0
},
new Shape(2, 1, 3, 2),
GpuContext.Default);
var biasGradient = BuilderInstance <double> .Volume.SameAs(new Shape(1, 1, 3, 1));
outputGradient.BiasGradient(biasGradient);
Assert.AreEqual(6.0, biasGradient.Get(0, 0, 0, 0));
Assert.AreEqual(8.0, biasGradient.Get(0, 0, 1, 0));
Assert.AreEqual(10.0, biasGradient.Get(0, 0, 2, 0));
}
