Struct Gbm 

pub struct Gbm {
    pub base: f64,
    pub edges: Vec<Vec<f64>>,
    pub trees: Vec<Vec<GbmNode>>,
}

A small gradient-boosted tree ensemble for “will it close higher?”.

The linear model can only say “more of X, more up”. Direction might instead live in regimes: “falling market and fear spiking and this stock far below its average”. Shallow trees find such corners. Kept tiny (depth 3, coarse 32-bin thresholds, big leaves) because direction data is mostly noise and big trees would memorise it.

Fields

base: f64

edges: Vec<Vec<f64>>

trees: Vec<Vec<GbmNode>>

Implementations

impl Gbm

pub fn fit(x: &[Vec<f64>], y: &[f64], p: &GbmParams) -> Self

pub fn predict(&self, r: &[f64]) -> f64

Trait Implementations

impl Clone for Gbm

fn clone(&self) -> Gbm

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Gbm

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

Formats the value using the given formatter.