Enum NewFeaturePolicy 

pub enum NewFeaturePolicy {
    Reject,
    Ignore,
}

Policy for handling new FeatureIds once FtrlConfig::max_features has been reached.

max_features only constrains feature insertion; features already in the model continue to train regardless of the policy.

Variants

Reject

Reject the entire learn call with RillError::InvalidState when adding the new features in the current sample would exceed max_features. The call is failure-atomic: no state changes.

Ignore

Keep training existing features but silently skip any new feature that would exceed max_features. The sample counter still advances and existing features still receive their gradient update.

Trait Implementations

impl Clone for NewFeaturePolicy

fn clone(&self) -> NewFeaturePolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NewFeaturePolicy

impl Debug for NewFeaturePolicy

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

Formats the value using the given formatter.

impl Default for NewFeaturePolicy

fn default() -> NewFeaturePolicy

Returns the “default value” for a type.

impl Eq for NewFeaturePolicy

impl PartialEq for NewFeaturePolicy

fn eq(&self, other: &NewFeaturePolicy) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for NewFeaturePolicy