similarity

package

v0.1.6 Latest Latest Go to latest Published: Jul 12, 2021 License: Apache-2.0 Imports: 4 Imported by: 10

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type BM25Scorer struct {
	// contains filtered or unexported fields
}

func NewBM25Scorer(boost, k1, b, avgDocLen float64, idf *search.Explanation) *BM25Scorer

func (b *BM25Scorer) Explain(freq int, norm float64) *search.Explanation

func (b *BM25Scorer) Score(freq int, norm float64) float64

type BM25Similarity struct {
	// contains filtered or unexported fields
}

func NewBM25Similarity() *BM25Similarity

func NewBM25SimilarityBK1(b, k1 float64) *BM25Similarity

func (b *BM25Similarity) AverageFieldLength(stats segment.CollectionStats) float64

func (b *BM25Similarity) ComputeNorm(numTerms int) float32

func (b *BM25Similarity) Idf(docFreq, docCount uint64) float64

func (b *BM25Similarity) IdfExplainTerm(collectionStats segment.CollectionStats, termStats segment.TermStats) *search.Explanation

func (b *BM25Similarity) Scorer(boost float64, collectionStats segment.CollectionStats, termStats segment.TermStats) search.Scorer

type CompositeSumScorer struct{}

func NewCompositeSumScorer() *CompositeSumScorer

func (c *CompositeSumScorer) ExplainComposite(constituents []*search.DocumentMatch) *search.Explanation

func (c *CompositeSumScorer) ScoreComposite(constituents []*search.DocumentMatch) float64

type ConstantScorer float64

func (c ConstantScorer) Explain(_ int, _ float64) *search.Explanation

func (c ConstantScorer) ExplainComposite(_ []*search.DocumentMatch) *search.Explanation

func (c ConstantScorer) Score(_ int, _ float64) float64

func (c ConstantScorer) ScoreComposite(_ []*search.DocumentMatch) float64