Struct VSearchParams 

pub struct VSearchParams {
    pub ef: usize,
    pub rerank: usize,
    pub patience: usize,
    pub screen_sigmas: f32,
    pub screen: bool,
    pub fuse: bool,
    pub neighbour_cap: usize,
}

Search parameters of a VGraph.

Fields

ef: usize

Candidate pool size (beam width).

rerank: usize

Number of best pool candidates re-scored with the float query (and the residual code, when built); 0 returns the pool order.

patience: usize

Early stop: end the traversal once this many consecutive expansions have left the k best estimates unchanged (0 = the pool rule alone). The pool rule still applies.

screen_sigmas: f32

With a screen (see VGraph::from_graph_with): a fresh neighbour gets the 8-bit estimate only if its 1-bit estimate minus this many standard deviations of the screen’s error could still enter the full pool. Larger values skip less.

screen: bool

Consult the screen when the index has one (false runs the plain search on it).

fuse: bool

With neighbour blocks: fuse the block estimates a vertex receives from every expanded vertex that lists it (precision-weighted by the edge residual’s scale) and re-admit it to the pool when the fused estimate qualifies, instead of keeping its first one.

neighbour_cap: usize

Per-row search: estimate only the first this many neighbours of each expanded vertex (lists keep the build’s order, nearest first); 0 = all.

Trait Implementations

impl Clone for VSearchParams

fn clone(&self) -> VSearchParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for VSearchParams

impl Debug for VSearchParams

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

Formats the value using the given formatter.

impl Default for VSearchParams

fn default() -> Self

Returns the “default value” for a type.