lazymatrix::LogicalColumn

LazyMatrix for Rust · 0.8.1

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pub trait LogicalColumn<F: Scalar>

Operations on one logical, possibly normalized column.

Methods

center

fn center(&self) -> F

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dot

fn dot<V: VectorView<F> + ?Sized>(&self, vector: &V) -> F

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dot_with_sum

fn dot_with_sum<V: VectorView<F> + ?Sized>(
    &self,
    vector: &V,
    vector_sum: F
) -> F

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is_empty

fn is_empty(&self) -> bool

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len

fn len(&self) -> usize

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norm_squared

fn norm_squared(&self) -> F

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scale

fn scale(&self) -> F

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scaled_add_to

fn scaled_add_to<V: VectorViewMut<F> + ?Sized>(
    &self,
    alpha: F,
    destination: &mut V
)

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sum

fn sum(&self) -> F

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weighted_dot

fn weighted_dot<V, W>(
    &self,
    vector: &V,
    weights: &W
) -> F where V: VectorView<F> + ?Sized, W: VectorView<F> + ?Sized

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weighted_dot_with_sum

fn weighted_dot_with_sum<V, W>(
    &self,
    vector: &V,
    weights: &W,
    weighted_vector_sum: F
) -> F where V: VectorView<F> + ?Sized, W: VectorView<F> + ?Sized

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weighted_norm_squared

fn weighted_norm_squared<W: VectorView<F> + ?Sized>(&self, weights: &W) -> F

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Sum weighted squares of logical entries, including implicit zeros.

weighted_norm_squared_with_sum

fn weighted_norm_squared_with_sum<W: VectorView<F> + ?Sized>(
    &self,
    weights: &W,
    weight_sum: F
) -> F

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Accept a cached total, which implementations may ignore for stability.

LazyColumn uses the same O(n + nnz) calculation as its uncached method to preserve small implicit-zero contributions.

Implementation of LogicalColumn

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impl<C: RawColumn<F>, F: Scalar> LogicalColumn<F> for LazyColumn<C, F>