CosLU
Cosine Linear Unit
The **Cosine Linear Unit**, or **CosLU**, is a type of activation function that has trainable parameters and uses the cosine function.

$$CosLU(x) = (x + \alpha \cos(\beta x))\sigma(x)$$
Trainable Activations for Image Classification
https://paperswithcode.com/paper/trainable-activations-for-image
Trainable Activations for Image Classification