//! This directory provides some features for research
//! Measure the followings of boosting algorithm per iteration
//! - Running time
//! - Objective value
//! - Training loss
//! - Test loss
// Defines a trait for logging.
// Defines the logger builder.
pub use ;
pub use CrossValidation;
pub use LoggerBuilder;
/// Defines objective functions and its traits.
pub use ObjectiveFunction;