Struct IndexConfig 

pub struct IndexConfig {
    pub dimensions: usize,
    pub metric: DistanceMetric,
    pub connectivity: usize,
    pub expansion_build: usize,
    pub expansion_query: usize,
    pub replicas: usize,
    pub build_threads: usize,
    pub query_threads: usize,
    pub seed: u64,
}

Immutable HNSW construction and query policy.

Fields

dimensions: usize

Number of scalar components in every stored vector and query.

metric: DistanceMetric

Distance metric used for graph construction and search.

connectivity: usize

Outgoing upper-layer link budget. Layer zero uses twice this budget; retained reverse links may increase a node’s final degree.

expansion_build: usize

Candidate width used while constructing graph links.

expansion_query: usize

Candidate width used by approximate queries.

replicas: usize

Independently seeded deterministic HNSW graphs.

build_threads: usize

Maximum worker budget shared by replicas and bulk-construction waves.

query_threads: usize

Maximum workers used by crate::VectorIndex::search_batch.

seed: u64

Fixed seed for levels and insertion order.

Implementations

impl IndexConfig

pub fn new(dimensions: usize) -> Self

Creates a portable default configuration for dimensions.

pub fn validate(&self) -> Result<(), SearchError>

Validates dimensions, graph widths, and worker bounds.

Errors

Returns SearchError::InvalidConfig for an unusable value or SearchError::CapacityOverflow when degree arithmetic overflows.

Trait Implementations

impl Clone for IndexConfig

fn clone(&self) -> IndexConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexConfig

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

Formats the value using the given formatter.

impl Eq for IndexConfig

impl PartialEq for IndexConfig

fn eq(&self, other: &IndexConfig) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for IndexConfig