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VectorCost

nodedb_vector::planner::cost

Struct VectorCost 

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pub struct VectorCost {
    pub graph_traversal_us: f32,
    pub codec_decode_ns: f32,
    pub rerank_us: f32,
    pub filter_selectivity: f32,
    pub candidate_set_size: usize,
    pub predicted_recall: f32,
}
Expand description

All cost dimensions produced by estimate_cost.

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§graph_traversal_us: f32

Estimated HNSW / Vamana graph traversal cost in microseconds.

§codec_decode_ns: f32

Estimated codec decode cost per vector touched in nanoseconds.

§rerank_us: f32

Estimated rerank cost in microseconds.

This is the full-precision re-scoring phase that follows compressed traversal. Zero when quantization == None.

§filter_selectivity: f32

Filter selectivity in [0.0, 1.0]. Copied from CostModelInputs.

§candidate_set_size: usize

Expected candidate set size after filtering. Copied from inputs.

§predicted_recall: f32

Predicted recall in [0.0, 1.0] for the chosen index × quantization combination.

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impl Clone for VectorCost

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fn clone(&self) -> VectorCost

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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 Copy for VectorCost

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