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// Copyright 2018-2020 argmin developers // // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or // http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or // http://opensource.org/licenses/MIT>, at your option. This file may not be // copied, modified, or distributed except according to those terms. //! Argmin Trust region methods /// Cauchy Point pub mod cauchypoint; /// Dogleg method pub mod dogleg; /// Steihaug method pub mod steihaug; /// Trust region solver pub mod trustregion_method; pub use self::cauchypoint::*; pub use self::dogleg::*; pub use self::steihaug::*; pub use self::trustregion_method::*; use crate::core::ArgminFloat; /// Computes reduction ratio pub fn reduction_ratio<F: ArgminFloat>(fxk: F, fxkpk: F, mk0: F, mkpk: F) -> F { (fxk - fxkpk) / (mk0 - mkpk) }