Struct BestFirstTreeBuilder

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pub struct BestFirstTreeBuilder {
    pub nodes: Vec<TreeNode>,
    pub node_queue: BinaryHeap<NodePriority>,
    pub next_node_id: usize,
    pub n_leaves: usize,
}

Expand description

Best-first tree builder

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§nodes: Vec<TreeNode>

Nodes in the tree

§node_queue: BinaryHeap<NodePriority>

Priority queue of nodes to expand (ordered by potential decrease)

§next_node_id: usize

Next node ID

§n_leaves: usize

Current number of leaves

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impl BestFirstTreeBuilder

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pub fn new( x: &Array2<f64>, y: &Array1<i32>, config: &DecisionTreeConfig, n_classes: usize, ) -> Self

Create a new best-first tree builder

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pub fn build_tree( &mut self, x: &Array2<f64>, y: &Array1<i32>, config: &DecisionTreeConfig, n_classes: usize, ) -> Result<()>

Build the tree using best-first strategy

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impl Debug for BestFirstTreeBuilder

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for BestFirstTreeBuilder

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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