Bm25Scorer

Namespace

Rowles.LeanLucene.Search.Scoring

Assembly

Rowles.LeanLucene.dll

BM25 scorer. Computes relevance scores for term matches.

public static class Bm25Scorer

Bm25Scorer

Idf(int, int)

Precomputes the IDF component (constant for a given term across all documents).

PrecomputeFactors(int, int, float)

Precomputes factors that are constant for a given field/term. Returns (idf, k1BOverAvgDL) where k1BOverAvgDL = K1 * B / avgDocLength.

Score(int, int, float, int, int)

Computes the BM25 score for a single term in a single document.

ScorePrecomputed(float, float, int, int)

Scores with precomputed IDF and normalisation factor. Avoids per-doc division.