rust-xgboost

Travis Build Status

Rust bindings for the XGBoost gradient boosting library.

Basic usage example:

```rust extern crate xgboost;

use xgboost::{parameters, dmatrix::DMatrix, booster::Booster};

fn main() { // training matrix with 5 training examples and 3 features let xtrain = &[1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 1.0, 1.0, 1.0]; let numrows = 5; let y_train = &[1.0, 1.0, 1.0, 0.0, 1.0];

// convert training data into XGBoost's matrix format
let mut dtrain = DMatrix::from_dense(x_train, num_rows).unwrap();

// set ground truth labels for the training matrix
dtrain.set_labels(y_train).unwrap();

// test matrix with 1 row
let x_test = &[0.7, 0.9, 0.6];
let num_rows = 1;
let y_test = &[1.0];
let mut dtest = DMatrix::from_dense(x_test, num_rows).unwrap();
dtest.set_labels(y_test).unwrap();

// build overall training parameters
let params = parameters::ParametersBuilder::default().build().unwrap();

// specify datasets to evaluate against during training
let evaluation_sets = &[(&dtrain, "train"), (&dtest, "test")];

// train model, and print evaluation data
let bst = Booster::train(&params, &dtrain, 3, evaluation_sets).unwrap();

println!("{:?}", bst.predict(&dtest).unwrap());

} ```

See the examples directory for more detailed examples of different features.

Status

Currently in a very early stage of development, so the API is changing as usability issues occur, or new features are supported.

Builds against XGBoost 0.80.

Platforms

Tested:

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