Struct QueryOptimizer 

pub struct QueryOptimizer { /* private fields */ }

Query optimizer for selecting search strategies

Implementations

impl QueryOptimizer

pub fn new(config: OptimizerConfig) -> Self

Create a new query optimizer

pub fn recommend_strategy( &self, num_vectors: usize, required_recall: f32, ) -> SearchStrategy

Recommend search strategy based on dataset size and recall requirement

Arguments

• num_vectors - Number of vectors in the dataset
• required_recall - Required recall (0.0 to 1.0)

pub fn recommend_prefiltering( &self, num_vectors: usize, filter_selectivity: f32, ) -> bool

Estimate whether pre-filtering or post-filtering is more efficient

Arguments

• num_vectors - Total number of vectors
• filter_selectivity - Estimated fraction of vectors matching filter (0.0 to 1.0)

Returns

true if pre-filtering is recommended, false for post-filtering

pub fn recommend_batch_size( &self, num_queries: usize, num_vectors: usize, ) -> usize

Estimate optimal batch size for batch search

Arguments

• num_queries - Number of queries to process
• num_vectors - Number of vectors in dataset

Returns

Recommended batch size

pub fn estimate_cost( &self, strategy: SearchStrategy, num_vectors: usize, k: usize, ) -> f64

Estimate search cost (relative units)

Returns estimated computational cost for comparison between strategies.

pub fn config(&self) -> &OptimizerConfig

Get optimizer configuration

Trait Implementations

impl Clone for QueryOptimizer

fn clone(&self) -> QueryOptimizer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryOptimizer

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

Formats the value using the given formatter.