Struct RangerConfig 

pub struct RangerConfig {
    pub radam: RAdamConfig,
    pub alpha: f64,
    pub k: usize,
}

Ranger optimizer configuration.

Ranger combines RAdam with Lookahead for improved training stability and generalization. It uses RAdam as the inner optimizer and applies Lookahead’s slow weights mechanism.

Reference: “Lookahead Optimizer: k steps forward, 1 step back” by Zhang et al. (2019)

Fields

radam: RAdamConfig

RAdam configuration.

alpha: f64

Lookahead alpha (interpolation coefficient).

k: usize

Lookahead k (synchronization period).

Implementations

impl RangerConfig

pub fn new(lr: f64) -> Self

Create a new Ranger configuration with the given learning rate.

pub fn with_alpha(self, alpha: f64) -> Self

Set lookahead alpha.

pub fn with_k(self, k: usize) -> Self

Set lookahead k (synchronization period).

pub fn with_weight_decay(self, weight_decay: f64) -> Self

Set weight decay.

pub fn with_beta1(self, beta1: f64) -> Self

Set beta1.

pub fn with_beta2(self, beta2: f64) -> Self

Set beta2.

Trait Implementations

impl Clone for RangerConfig

fn clone(&self) -> RangerConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RangerConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RangerConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RangerConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for RangerConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.