pub struct SparseIndex {
pub postings: Vec<Option<Arc<BlockSparsePostingList>>>,
pub total_docs: u32,
}Expand description
Sparse vector index for a field: direct-indexed by dimension ID
Fields§
§postings: Vec<Option<Arc<BlockSparsePostingList>>>Posting lists indexed directly by dimension ID (O(1) lookup) None means dimension not present in index
total_docs: u32Total document count in this segment (for IDF computation)
Implementations§
Source§impl SparseIndex
impl SparseIndex
Sourcepub fn idf(&self, dim_id: u32) -> f32
pub fn idf(&self, dim_id: u32) -> f32
Compute IDF (inverse document frequency) for a dimension
IDF = log(N / df) where N = total docs, df = docs containing dimension Returns 0.0 if dimension not present
Sourcepub fn idf_weights(&self, dim_ids: &[u32]) -> Vec<f32>
pub fn idf_weights(&self, dim_ids: &[u32]) -> Vec<f32>
Get IDF weights for multiple dimensions
Trait Implementations§
Source§impl Clone for SparseIndex
impl Clone for SparseIndex
Source§fn clone(&self) -> SparseIndex
fn clone(&self) -> SparseIndex
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreAuto Trait Implementations§
impl Freeze for SparseIndex
impl RefUnwindSafe for SparseIndex
impl Send for SparseIndex
impl Sync for SparseIndex
impl Unpin for SparseIndex
impl UnwindSafe for SparseIndex
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moreSource§impl<T> Pointable for T
impl<T> Pointable for T
Source§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
Source§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct
self from the equivalent element of its
superset. Read moreSource§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
Checks if
self is actually part of its subset T (and can be converted to it).Source§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
Use with care! Same as
self.to_subset but without any property checks. Always succeeds.Source§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
The inclusion map: converts
self to the equivalent element of its superset.