Struct HnswConfig 

pub struct HnswConfig {
    pub m: Option<usize>,
    pub ef_construction: Option<usize>,
}

Configuration for HNSW indexes.

HNSW builds a multi-layered graph that enables efficient approximate nearest-neighbor search without a separate training step.

Tuning Guidelines

• m: Number of connections per node. Higher = better recall, more memory. Default: 16. Range: 2-100.
• ef_construction: Size of the dynamic candidate list during index build. Higher = better recall, slower build. Default: 64. Range: 4-1000.

Fields

m: Option<usize>

Maximum number of connections per node per layer.

Higher values improve recall but increase memory and build time. Default: 16.

ef_construction: Option<usize>

Size of the dynamic candidate list during construction.

Higher values improve index quality but slow down build. Default: 64.

Implementations

impl HnswConfig

pub fn new() -> Self

Create a new HNSW config with defaults.

pub fn m(self, m: usize) -> Self

Set the m parameter (connections per node).

pub fn ef_construction(self, ef: usize) -> Self

Set the ef_construction parameter.

pub fn high_recall() -> Self

High-recall configuration (slower build, better search quality).

pub fn fast_build() -> Self

Fast-build configuration (faster build, lower recall).

Trait Implementations

impl Clone for HnswConfig

fn clone(&self) -> HnswConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HnswConfig

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

Formats the value using the given formatter.

impl Default for HnswConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for HnswConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for HnswConfig

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for HnswConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for HnswConfig

impl StructuralPartialEq for HnswConfig