newron 0.4.0

A Rust library to train and infer deep learning models.
Documentation 
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use crate::layers::layer::Layer;
use crate::tensor::Tensor;

pub struct ReLU;

impl Layer for ReLU {
    fn get_info(&self) -> String {
        format!("ReLU Layer")
    }

    fn forward(&self, input: &Tensor) -> Tensor {
        input.map(|x| x.max(0.0))
    }

    fn backward(&mut self, input: &Tensor, grad_output: Tensor) -> Tensor {
        let relu_grad = input.map(|x| if x > 0.0 { 1.0 } else { 0.0 });
        println!("grad ReLU: \n{}", grad_output.mult_el(&relu_grad));
        grad_output.mult_el(&relu_grad)
    }
}