public override KerasSymbol Call(Shape shape, DType dtype = null)
{
var(fan_in, fan_out) = _compute_fans(shape);
var scale = this.scale;
if (this.mode == "fan_in")
{
scale /= Math.Max(1, fan_in);
}
else if (this.mode == "fan_out")
{
scale /= Math.Max(1, fan_out);
}
else
{
scale /= Math.Max(1, (fan_in + fan_out) / 2);
}
if (this.distribution == "normal")
{
// 0.879... = scipy.stats.truncnorm.std(a=-2, b=2, loc=0., scale=1.)
float stddev = (float)Math.Sqrt(scale) / 0.8796256610342398f;
return(K.TruncatedNormal(shape, 0, stddev, dtype: dtype, seed: this.seed));
}
else
{
float limit = (float)Math.Sqrt(3.0 * scale);
return(K.RandomUniform(shape, -limit, limit, dtype: dtype, seed: this.seed));
}
}
public override KerasSymbol Call(Shape shape, DType dtype = null)
{
return(K.RandomUniform(shape, this.minval, this.maxval, dtype: dtype, seed: this.seed));
}