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IndexParameters

oxirs_vec::optimizer::cost_model

Struct IndexParameters 

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pub struct IndexParameters {
    pub hnsw_m: usize,
    pub hnsw_ef: usize,
    pub ivf_n_clusters: usize,
    pub ivf_n_probes: usize,
    pub lsh_tables: usize,
    pub lsh_hash_functions: usize,
    pub lsh_avg_bucket_size: usize,
    pub pq_subquantizers: usize,
    pub pq_centroids: usize,
}
Expand description

Tunable per-index parameters that affect the cost formula.

Defaults match the canonical defaults used elsewhere in the crate: HnswConfig::m = 16, HnswConfig::ef = 50, IvfConfig::n_clusters = 256, IvfConfig::n_probes = 8, LshConfig::num_tables = 10, LshConfig::num_hash_functions = 8, PQConfig::n_subquantizers = 8, PQConfig::n_centroids = 256.

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§hnsw_m: usize

HNSW max degree per layer.

§hnsw_ef: usize

HNSW search beam width.

§ivf_n_clusters: usize

IVF coarse centroids.

§ivf_n_probes: usize

IVF cells probed per query.

§lsh_tables: usize

LSH hash tables.

§lsh_hash_functions: usize

LSH hash functions per table.

§lsh_avg_bucket_size: usize

LSH expected bucket size (data_size / (tables * 2^hash_functions) clamped).

§pq_subquantizers: usize

PQ subquantizers.

§pq_centroids: usize

PQ centroids per subquantizer.

Trait Implementations§

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impl Clone for IndexParameters

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fn clone(&self) -> IndexParameters

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for IndexParameters

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

Formats the value using the given formatter. Read more
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impl Default for IndexParameters

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for IndexParameters

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for IndexParameters

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

Serialize this value into the given Serde serializer. Read more

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