fusion

package
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Published: Mar 22, 2026 License: MIT Imports: 3 Imported by: 0

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Types

type FusionEngine

type FusionEngine interface {
	// ReciprocalRankFusion (RRF) merges results from different modalities
	// (e.g., Sparse + Dense, or Vector + Graph) and re-ranks them based on their reciprocal positions.
	ReciprocalRankFusion(ctx context.Context, resultSets [][]*core.Chunk, topK int) ([]*core.Chunk, error)
}

FusionEngine is responsible for merging multiple retrieval streams.

type RRFFusionEngine

type RRFFusionEngine struct {
	// contains filtered or unexported fields
}

RRFFusionEngine implements Reciprocal Rank Fusion. RRF computes a score for each chunk based on its rank in multiple result sets. Formula: RRF_Score = 1 / (k + rank)

func NewRRFFusionEngine

func NewRRFFusionEngine() *RRFFusionEngine

NewRRFFusionEngine creates a new fusion engine with the standard k=60.

func (*RRFFusionEngine) Fuse

func (e *RRFFusionEngine) Fuse(ctx context.Context, resultSets [][]*core.Chunk, topK int) ([]*core.Chunk, error)

Fuse performs a simple merge of multiple result sets.

func (*RRFFusionEngine) ReciprocalRankFusion

func (e *RRFFusionEngine) ReciprocalRankFusion(ctx context.Context, resultSets [][]*core.Chunk, topK int) ([]*core.Chunk, error)

ReciprocalRankFusion merges results from different modalities.

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