Rectified Linear Units, or ReLUs, are a type of activation function that are linear in the positive dimension, but zero in the negative dimension. The kink in the function is the source of the non-linearity. Linearity in the positive dimension has the attractive property that it prevents non-saturation of gradients (contrast with sigmoid activations), although for half of the real line its gradient is zero.
$$ f\left(x\right) = \max\left(0, x\right) $$
|🤖 No Components Found||You can add them if they exist; e.g. Mask R-CNN uses RoIAlign|