Struct LearningTaskParametersBuilder

pub struct LearningTaskParametersBuilder { /* private fields */ }

Builder for LearningTaskParameters.

Implementations

impl LearningTaskParametersBuilder

pub fn objective(&mut self, value: Objective) -> &mut Self

Learning objective used when training.

default: RegLinear

pub fn base_score(&mut self, value: f32) -> &mut Self

Initial prediction score, i.e. global bias.

default: 0.5

pub fn eval_metrics(&mut self, value: Metrics) -> &mut Self

Metrics to use on evaluation data sets during training.

default: Auto (i.e. metrics selected automatically based on objective)

pub fn seed(&mut self, value: u64) -> &mut Self

Random seed.

default: 0

pub fn build( &self, ) -> Result<LearningTaskParameters, LearningTaskParametersBuilderError>

Builds a new LearningTaskParameters.

Errors

If a required field has not been initialized.

Trait Implementations

impl Clone for LearningTaskParametersBuilder

fn clone(&self) -> LearningTaskParametersBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for LearningTaskParametersBuilder

fn default() -> Self

Returns the “default value” for a type.