Struct L2ListMetadata

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pub struct L2ListMetadata {
    pub centroid: Vec<f32>,
    pub radius: f32,
    pub mean_radius: f32,
    pub vector_count: u32,
}

Expand description

Metadata for L2 distance bounds (centroid + radius)

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§centroid: Vec<f32>

Centroid of the list

§radius: f32

Maximum L2 distance from centroid to any vector in list

§mean_radius: f32

Mean L2 distance from centroid

§vector_count: u32

Number of vectors

Implementations§

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impl L2ListMetadata

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pub fn from_vectors(vectors: &[Vec<f32>], centroid: &[f32]) -> Self

Build from vectors

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pub fn lower_bound(&self, query: &[f32]) -> f32

Compute lower bound on L2 distance from query to any vector in list

LB = max(0, dist(q, c) - radius)

Trait Implementations§

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impl Clone for L2ListMetadata

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fn clone(&self) -> L2ListMetadata

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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impl Debug for L2ListMetadata

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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 L2ListMetadata

Blanket Implementations§

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where T: 'static + ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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