# ML Kit
`ml_kit` is an open-source Machine Learning library for Rust!
## Quickstart
Go ahead and download the MNIST Digits database, put it in a folder in your project
so that the image and label files can be accessed via the path `data/digits/FILENAME.idx{1,3}-ubyte`.
After having added `ml_kit` to your project via something like `cargo add ml_kit`,
you can run the following code to quickly train a Neural Network on
images of handwritten digits.
```rust
use std::fs::File;
use ml_kit::{math::LFI, training::sgd::SGDTrainer, utility::mnist::mnist_utility::load_mnist};
use ml_kit::math::activation::AFI;
fn main() {
let relative_path = "../Data sets/MNIST/digits";
let dataset = load_mnist(relative_path, "train");
let testing_ds = load_mnist(relative_path, "t10k");
let trainer = SGDTrainer::new(dataset, testing_ds, LFI::Squared);
let mut neuralnet = trainer.random_network(vec![784, 16, 16, 10], vec![AFI::Sigmoid, AFI::Sigmoid, AFI::Sigmoid]);
let learning_rate = 0.05;
let epochs = 100;
let original_cost = trainer.cost(&neuralnet);
println!("Original cost: {}", original_cost);
trainer.train_sgd(&mut neuralnet, learning_rate, epochs, 32);
let final_cost = trainer.cost(&neuralnet);
println!("Final cost: {}", final_cost);
// Now, let's go through and actually try it out!
trainer.display_behavior(&neuralnet, 10);
println!("Writing final network to testing folder.");
match File::create("testing/files/digits.mlk_nn") {
Ok(mut f) => neuralnet.write_to_file(&mut f),
Err(e) => println!("Error writing to file: {:?}", e),
}
}
```
In the end, the behavior of the network will be printed to the screen, and a
file representing the parameters of the network is written to
`testing/files/digits.mlk_nn`.