Struct SparseIndex

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pub struct SparseIndex { /* private fields */ }

Expand description

Inverted index over weighted sparse vectors, keyed by token id.

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impl SparseIndex

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pub fn new() -> Self

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pub fn insert(&mut self, terms: &[(u32, f32)], row_id: RowId)

Insert a document’s sparse vector (terms need not be sorted; duplicate tokens within one doc accumulate).

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pub fn search(&self, query: &[(u32, f32)], k: usize) -> Vec<(RowId, f32)>

Top-k row ids by sparse dot product with query (highest score first).

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pub fn is_empty(&self) -> bool

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pub fn entries(&self) -> Vec<(u32, Vec<(RowId, f32)>)>

Snapshot the inverted lists for checkpointing to _idx/global.idx.

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pub fn from_entries(entries: Vec<(u32, Vec<(RowId, f32)>)>) -> Self

Rebuild from a snapshot produced by SparseIndex::entries.

Trait Implementations§

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impl Default for SparseIndex

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for SparseIndex

Blanket Implementations§

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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

Immutably borrows from an owned value. Read more

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

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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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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impl<T, U> Into for T
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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