Trait forust_ml::objective::ObjectiveFunction
source · pub trait ObjectiveFunction {
// Required methods
fn calc_loss(y: &[f64], yhat: &[f64], sample_weight: &[f64]) -> Vec<f32>;
fn calc_grad(y: &[f64], yhat: &[f64], sample_weight: &[f64]) -> Vec<f32>;
fn calc_hess(y: &[f64], yhat: &[f64], sample_weight: &[f64]) -> Vec<f32>;
fn default_metric() -> Metric;
}