core/org.gnit.lucenekmp.search.similarities/MultiSimilarity

MultiSimilarity

class MultiSimilarity(sims: Array<Similarity>) : Similarity

Implements the CombSUM method for combining evidence from multiple similarity values described in: Joseph A. Shaw, Edward A. Fox. In Text REtrieval Conference (1993), pp. 243-252

Constructors

MultiSimilarity

constructor(sims: Array<Similarity>)

Properties

discountOverlaps

val discountOverlaps: Boolean

True if overlap tokens (tokens with a position of increment of zero) are discounted from the document's length.

Functions

computeNorm

open override fun computeNorm(state: FieldInvertState): Long

Computes the normalization value for a field at index-time.

scorer

open override fun scorer(boost: Float, collectionStats: CollectionStatistics, vararg termStats: TermStatistics): Similarity.SimScorer

Compute any collection-level weight (e.g. IDF, average document length, etc) needed for scoring a query.