public virtual Scorer Scorer(Monodoc.Lucene.Net.Index.IndexReader reader) { if (Enclosing_Instance.termArrays.Count == 0) // optimize zero-term case return null; TermPositions[] tps = new TermPositions[Enclosing_Instance.termArrays.Count]; for (int i = 0; i < tps.Length; i++) { Term[] terms = (Term[]) Enclosing_Instance.termArrays[i]; TermPositions p; if (terms.Length > 1) p = new MultipleTermPositions(reader, terms); else p = reader.TermPositions(terms[0]); if (p == null) return null; tps[i] = p; } if (Enclosing_Instance.slop == 0) return new ExactPhraseScorer(this, tps, Enclosing_Instance.GetPositions(), Enclosing_Instance.GetSimilarity(searcher), reader.Norms(Enclosing_Instance.field)); else return new SloppyPhraseScorer(this, tps, Enclosing_Instance.GetPositions(), Enclosing_Instance.GetSimilarity(searcher), Enclosing_Instance.slop, reader.Norms(Enclosing_Instance.field)); }
public virtual Explanation Explain(Monodoc.Lucene.Net.Index.IndexReader reader, int doc) { Explanation result = new Explanation(); result.SetDescription("weight(" + Query + " in " + doc + "), product of:"); Explanation idfExpl = new Explanation(idf, "idf(" + Query + ")"); // explain query weight Explanation queryExpl = new Explanation(); queryExpl.SetDescription("queryWeight(" + Query + "), product of:"); Explanation boostExpl = new Explanation(Enclosing_Instance.GetBoost(), "boost"); if (Enclosing_Instance.GetBoost() != 1.0f) queryExpl.AddDetail(boostExpl); queryExpl.AddDetail(idfExpl); Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm"); queryExpl.AddDetail(queryNormExpl); queryExpl.SetValue(boostExpl.GetValue() * idfExpl.GetValue() * queryNormExpl.GetValue()); result.AddDetail(queryExpl); // explain Field weight Explanation fieldExpl = new Explanation(); fieldExpl.SetDescription("fieldWeight(" + Query + " in " + doc + "), product of:"); Explanation tfExpl = Scorer(reader).Explain(doc); fieldExpl.AddDetail(tfExpl); fieldExpl.AddDetail(idfExpl); Explanation fieldNormExpl = new Explanation(); byte[] fieldNorms = reader.Norms(Enclosing_Instance.field); float fieldNorm = fieldNorms != null?Similarity.DecodeNorm(fieldNorms[doc]):0.0f; fieldNormExpl.SetValue(fieldNorm); fieldNormExpl.SetDescription("fieldNorm(Field=" + Enclosing_Instance.field + ", doc=" + doc + ")"); fieldExpl.AddDetail(fieldNormExpl); fieldExpl.SetValue(tfExpl.GetValue() * idfExpl.GetValue() * fieldNormExpl.GetValue()); result.AddDetail(fieldExpl); // combine them result.SetValue(queryExpl.GetValue() * fieldExpl.GetValue()); if (queryExpl.GetValue() == 1.0f) return fieldExpl; return result; }
public virtual Scorer Scorer(Monodoc.Lucene.Net.Index.IndexReader reader) { TermDocs termDocs = reader.TermDocs(Enclosing_Instance.term); if (termDocs == null) return null; return new TermScorer(this, termDocs, Enclosing_Instance.GetSimilarity(searcher), reader.Norms(Enclosing_Instance.term.Field())); }
public virtual Explanation Explain(Monodoc.Lucene.Net.Index.IndexReader reader, int doc) { Explanation result = new Explanation(); result.SetDescription("weight(" + Query + " in " + doc + "), product of:"); System.String field = ((SpanQuery) Query).GetField(); System.Text.StringBuilder docFreqs = new System.Text.StringBuilder(); System.Collections.IEnumerator i = terms.GetEnumerator(); while (i.MoveNext()) { Term term = (Term) i.Current; docFreqs.Append(term.Text()); docFreqs.Append("="); docFreqs.Append(searcher.DocFreq(term)); if (i.MoveNext()) { docFreqs.Append(" "); } } Explanation idfExpl = new Explanation(idf, "idf(" + field + ": " + docFreqs + ")"); // explain query weight Explanation queryExpl = new Explanation(); queryExpl.SetDescription("queryWeight(" + Query + "), product of:"); Explanation boostExpl = new Explanation(Query.GetBoost(), "boost"); if (Query.GetBoost() != 1.0f) queryExpl.AddDetail(boostExpl); queryExpl.AddDetail(idfExpl); Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm"); queryExpl.AddDetail(queryNormExpl); queryExpl.SetValue(boostExpl.GetValue() * idfExpl.GetValue() * queryNormExpl.GetValue()); result.AddDetail(queryExpl); // explain Field weight Explanation fieldExpl = new Explanation(); fieldExpl.SetDescription("fieldWeight(" + field + ":" + query.ToString(field) + " in " + doc + "), product of:"); Explanation tfExpl = Scorer(reader).Explain(doc); fieldExpl.AddDetail(tfExpl); fieldExpl.AddDetail(idfExpl); Explanation fieldNormExpl = new Explanation(); byte[] fieldNorms = reader.Norms(field); float fieldNorm = fieldNorms != null ? Similarity.DecodeNorm(fieldNorms[doc]) : 0.0f; fieldNormExpl.SetValue(fieldNorm); fieldNormExpl.SetDescription("fieldNorm(Field=" + field + ", doc=" + doc + ")"); fieldExpl.AddDetail(fieldNormExpl); fieldExpl.SetValue(tfExpl.GetValue() * idfExpl.GetValue() * fieldNormExpl.GetValue()); result.AddDetail(fieldExpl); // combine them result.SetValue(queryExpl.GetValue() * fieldExpl.GetValue()); if (queryExpl.GetValue() == 1.0f) return fieldExpl; return result; }
public virtual Scorer Scorer(Monodoc.Lucene.Net.Index.IndexReader reader) { return new SpanScorer(query.GetSpans(reader), this, query.GetSimilarity(searcher), reader.Norms(query.GetField())); }
public virtual Explanation Explain(Monodoc.Lucene.Net.Index.IndexReader reader, int doc) { Explanation result = new Explanation(); result.SetDescription("weight(" + Query + " in " + doc + "), product of:"); System.Text.StringBuilder docFreqs = new System.Text.StringBuilder(); System.Text.StringBuilder query = new System.Text.StringBuilder(); query.Append('\"'); for (int i = 0; i < Enclosing_Instance.terms.Count; i++) { if (i != 0) { docFreqs.Append(" "); query.Append(" "); } Term term = (Term) Enclosing_Instance.terms[i]; docFreqs.Append(term.Text()); docFreqs.Append("="); docFreqs.Append(searcher.DocFreq(term)); query.Append(term.Text()); } query.Append('\"'); Explanation idfExpl = new Explanation(idf, "idf(" + Enclosing_Instance.field + ": " + docFreqs + ")"); // explain query weight Explanation queryExpl = new Explanation(); queryExpl.SetDescription("queryWeight(" + Query + "), product of:"); Explanation boostExpl = new Explanation(Enclosing_Instance.GetBoost(), "boost"); if (Enclosing_Instance.GetBoost() != 1.0f) queryExpl.AddDetail(boostExpl); queryExpl.AddDetail(idfExpl); Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm"); queryExpl.AddDetail(queryNormExpl); queryExpl.SetValue(boostExpl.GetValue() * idfExpl.GetValue() * queryNormExpl.GetValue()); result.AddDetail(queryExpl); // explain Field weight Explanation fieldExpl = new Explanation(); fieldExpl.SetDescription("fieldWeight(" + Enclosing_Instance.field + ":" + query + " in " + doc + "), product of:"); Explanation tfExpl = Scorer(reader).Explain(doc); fieldExpl.AddDetail(tfExpl); fieldExpl.AddDetail(idfExpl); Explanation fieldNormExpl = new Explanation(); byte[] fieldNorms = reader.Norms(Enclosing_Instance.field); float fieldNorm = fieldNorms != null?Similarity.DecodeNorm(fieldNorms[doc]):0.0f; fieldNormExpl.SetValue(fieldNorm); fieldNormExpl.SetDescription("fieldNorm(Field=" + Enclosing_Instance.field + ", doc=" + doc + ")"); fieldExpl.AddDetail(fieldNormExpl); fieldExpl.SetValue(tfExpl.GetValue() * idfExpl.GetValue() * fieldNormExpl.GetValue()); result.AddDetail(fieldExpl); // combine them result.SetValue(queryExpl.GetValue() * fieldExpl.GetValue()); if (queryExpl.GetValue() == 1.0f) return fieldExpl; return result; }
public virtual Scorer Scorer(Monodoc.Lucene.Net.Index.IndexReader reader) { if (Enclosing_Instance.terms.Count == 0) // optimize zero-term case return null; TermPositions[] tps = new TermPositions[Enclosing_Instance.terms.Count]; for (int i = 0; i < Enclosing_Instance.terms.Count; i++) { TermPositions p = reader.TermPositions((Term) Enclosing_Instance.terms[i]); if (p == null) return null; tps[i] = p; } if (Enclosing_Instance.slop == 0) // optimize exact case return new ExactPhraseScorer(this, tps, Enclosing_Instance.GetPositions(), Enclosing_Instance.GetSimilarity(searcher), reader.Norms(Enclosing_Instance.field)); else return new SloppyPhraseScorer(this, tps, Enclosing_Instance.GetPositions(), Enclosing_Instance.GetSimilarity(searcher), Enclosing_Instance.slop, reader.Norms(Enclosing_Instance.field)); }