public override Explanation Explain(IndexReader reader, int doc) { ComplexExplanation result = new ComplexExplanation(); result.SetDescription("weight(" + GetQuery() + " in " + doc + "), product of:"); System.String field = ((SpanQuery) GetQuery()).GetField(); Explanation idfExpl = new Explanation(idf, "idf(" + field + ": " + idfExp.Explain() + ")"); // explain query weight Explanation queryExpl = new Explanation(); queryExpl.SetDescription("queryWeight(" + GetQuery() + "), product of:"); Explanation boostExpl = new Explanation(GetQuery().GetBoost(), "boost"); if (GetQuery().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 ComplexExplanation fieldExpl = new ComplexExplanation(); fieldExpl.SetDescription("fieldWeight(" + field + ":" + query.ToString(field) + " in " + doc + "), product of:"); Explanation tfExpl = Scorer(reader, true, false).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]):1.0f; fieldNormExpl.SetValue(fieldNorm); fieldNormExpl.SetDescription("fieldNorm(field=" + field + ", doc=" + doc + ")"); fieldExpl.AddDetail(fieldNormExpl); fieldExpl.SetMatch(tfExpl.IsMatch()); fieldExpl.SetValue(tfExpl.GetValue() * idfExpl.GetValue() * fieldNormExpl.GetValue()); result.AddDetail(fieldExpl); System.Boolean? tempAux = fieldExpl.GetMatch(); result.SetMatch(tempAux); // combine them result.SetValue(queryExpl.GetValue() * fieldExpl.GetValue()); if (queryExpl.GetValue() == 1.0f) return fieldExpl; return result; }
/// <summary>Returns an explanation of the score for a document. /// <br/>When this method is used, the {@link #Next()} method /// and the {@link #Score(HitCollector)} method should not be used. /// </summary> /// <param name="doc">The document number for the explanation. /// </param> public override Explanation Explain(int doc) { TermQuery query = (TermQuery) weight.GetQuery(); Explanation tfExplanation = new Explanation(); int tf = 0; while (pointer < pointerMax) { if (docs[pointer] == doc) tf = freqs[pointer]; pointer++; } if (tf == 0) { if (termDocs.SkipTo(doc)) { if (termDocs.Doc() == doc) { tf = termDocs.Freq(); } } } termDocs.Close(); tfExplanation.SetValue(GetSimilarity().Tf(tf)); tfExplanation.SetDescription("tf(termFreq(" + query.GetTerm() + ")=" + tf + ")"); return tfExplanation; }
/// <summary>Adds a sub-node to this explanation node. </summary> public virtual void AddDetail(Explanation detail) { if (details == null) details = new System.Collections.ArrayList(); details.Add(detail); }
public override Explanation Explain(IndexReader reader, int doc) { int minShouldMatch = Enclosing_Instance.GetMinimumNumberShouldMatch(); ComplexExplanation sumExpl = new ComplexExplanation(); sumExpl.SetDescription("sum of:"); int coord = 0; int maxCoord = 0; float sum = 0.0f; bool fail = false; int shouldMatchCount = 0; for (System.Collections.IEnumerator wIter = weights.GetEnumerator(), cIter = Enclosing_Instance.clauses.GetEnumerator(); wIter.MoveNext(); ) { cIter.MoveNext(); Weight w = (Weight)wIter.Current; BooleanClause c = (BooleanClause) cIter.Current; if (w.Scorer(reader, true, true) == null) { continue; } Explanation e = w.Explain(reader, doc); if (!c.IsProhibited()) maxCoord++; if (e.IsMatch()) { if (!c.IsProhibited()) { sumExpl.AddDetail(e); sum += e.GetValue(); coord++; } else { Explanation r = new Explanation(0.0f, "match on prohibited clause (" + c.GetQuery().ToString() + ")"); r.AddDetail(e); sumExpl.AddDetail(r); fail = true; } if (c.GetOccur() == Occur.SHOULD) shouldMatchCount++; } else if (c.IsRequired()) { Explanation r = new Explanation(0.0f, "no match on required clause (" + c.GetQuery().ToString() + ")"); r.AddDetail(e); sumExpl.AddDetail(r); fail = true; } } if (fail) { System.Boolean tempAux = false; sumExpl.SetMatch(tempAux); sumExpl.SetValue(0.0f); sumExpl.SetDescription("Failure to meet condition(s) of required/prohibited clause(s)"); return sumExpl; } else if (shouldMatchCount < minShouldMatch) { System.Boolean tempAux2 = false; sumExpl.SetMatch(tempAux2); sumExpl.SetValue(0.0f); sumExpl.SetDescription("Failure to match minimum number " + "of optional clauses: " + minShouldMatch); return sumExpl; } sumExpl.SetMatch(0 < coord?true:false); sumExpl.SetValue(sum); float coordFactor = similarity.Coord(coord, maxCoord); if (coordFactor == 1.0f) // coord is no-op return sumExpl; // eliminate wrapper else { ComplexExplanation result = new ComplexExplanation(sumExpl.IsMatch(), sum * coordFactor, "product of:"); result.AddDetail(sumExpl); result.AddDetail(new Explanation(coordFactor, "coord(" + coord + "/" + maxCoord + ")")); return result; } }
public override Explanation Explain(IndexReader reader, int doc) { ComplexExplanation result = new ComplexExplanation(); result.SetDescription("weight(" + GetQuery() + " in " + doc + "), product of:"); Explanation idfExpl = new Explanation(idf, "idf(" + GetQuery() + ")"); // explain query weight Explanation queryExpl = new Explanation(); queryExpl.SetDescription("queryWeight(" + GetQuery() + "), 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 ComplexExplanation fieldExpl = new ComplexExplanation(); fieldExpl.SetDescription("fieldWeight(" + GetQuery() + " in " + doc + "), product of:"); Scorer scorer = Scorer(reader, true, false); if (scorer == null) { return new Explanation(0.0f, "no matching docs"); } Explanation tfExpl = scorer.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]):1.0f; fieldNormExpl.SetValue(fieldNorm); fieldNormExpl.SetDescription("fieldNorm(field=" + Enclosing_Instance.field + ", doc=" + doc + ")"); fieldExpl.AddDetail(fieldNormExpl); fieldExpl.SetMatch(tfExpl.IsMatch()); fieldExpl.SetValue(tfExpl.GetValue() * idfExpl.GetValue() * fieldNormExpl.GetValue()); result.AddDetail(fieldExpl); System.Boolean? tempAux = fieldExpl.GetMatch(); result.SetMatch(tempAux); // combine them result.SetValue(queryExpl.GetValue() * fieldExpl.GetValue()); if (queryExpl.GetValue() == 1.0f) return fieldExpl; return result; }
public override Explanation Explain(IndexReader ir, int i) { Explanation inner = weight.Explain(ir, i); if (Enclosing_Instance.GetBoost() != 1) { Explanation preBoost = inner; inner = new Explanation(inner.GetValue() * Enclosing_Instance.GetBoost(), "product of:"); inner.AddDetail(new Explanation(Enclosing_Instance.GetBoost(), "boost")); inner.AddDetail(preBoost); } Filter f = Enclosing_Instance.filter; DocIdSet docIdSet = f.GetDocIdSet(ir); DocIdSetIterator docIdSetIterator = docIdSet == null?DocIdSet.EMPTY_DOCIDSET.Iterator():docIdSet.Iterator(); if (docIdSetIterator == null) { docIdSetIterator = DocIdSet.EMPTY_DOCIDSET.Iterator(); } if (docIdSetIterator.Advance(i) == i) { return inner; } else { Explanation result = new Explanation(0.0f, "failure to match filter: " + f.ToString()); result.AddDetail(inner); return result; } }
public override Explanation Explain(int doc) { Explanation tfExplanation = new Explanation(); int d = Advance(doc); float phraseFreq = (d == doc)?freq:0.0f; tfExplanation.SetValue(GetSimilarity().Tf(phraseFreq)); tfExplanation.SetDescription("tf(phraseFreq=" + phraseFreq + ")"); return tfExplanation; }
public override Explanation Explain(IndexReader reader, int doc) { Explanation result = new Explanation(); result.SetDescription("weight(" + GetQuery() + " in " + doc + "), product of:"); System.Text.StringBuilder docFreqs = new System.Text.StringBuilder(); System.Text.StringBuilder query = new System.Text.StringBuilder(); query.Append('\"'); docFreqs.Append(idfExp.Explain()); for (int i = 0; i < Enclosing_Instance.terms.Count; i++) { if (i != 0) { query.Append(" "); } Term term = (Term) Enclosing_Instance.terms[i]; 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(" + GetQuery() + "), 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:"); Scorer scorer = Scorer(reader, true, false); if (scorer == null) { return new Explanation(0.0f, "no matching docs"); } Explanation tfExpl = scorer.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]):1.0f; 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 override Explanation Explain(IndexReader reader, int doc) { ComplexExplanation result = new ComplexExplanation(); result.SetDescription("weight(" + GetQuery() + " in " + doc + "), product of:"); Explanation idfExpl = new Explanation(idf, "idf(" + GetQuery() + ")"); // explain query weight Explanation queryExpl = new Explanation(); queryExpl.SetDescription("queryWeight(" + GetQuery() + "), 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 ComplexExplanation fieldExpl = new ComplexExplanation(); fieldExpl.SetDescription("fieldWeight(" + GetQuery() + " in " + doc + "), product of:"); Scorer scorer = Scorer(reader, true, false); if (scorer == null) { return(new Explanation(0.0f, "no matching docs")); } Explanation tfExpl = scorer.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]) : 1.0f; fieldNormExpl.SetValue(fieldNorm); fieldNormExpl.SetDescription("fieldNorm(field=" + Enclosing_Instance.field + ", doc=" + doc + ")"); fieldExpl.AddDetail(fieldNormExpl); fieldExpl.SetMatch(tfExpl.IsMatch()); fieldExpl.SetValue(tfExpl.GetValue() * idfExpl.GetValue() * fieldNormExpl.GetValue()); result.AddDetail(fieldExpl); System.Boolean?tempAux = fieldExpl.GetMatch(); result.SetMatch(tempAux); // combine them result.SetValue(queryExpl.GetValue() * fieldExpl.GetValue()); if (queryExpl.GetValue() == 1.0f) { return(fieldExpl); } return(result); }
/// <returns> An explanation for the score of a given document. /// </returns> public override Explanation Explain(int doc) { Explanation res = new Explanation(); System.Collections.IEnumerator ssi = subScorers.GetEnumerator(); float sumScore = 0.0f; int nrMatches = 0; while (ssi.MoveNext()) { Explanation es = ((Scorer) ssi.Current).Explain(doc); if (es.GetValue() > 0.0f) { // indicates match sumScore += es.GetValue(); nrMatches++; } res.AddDetail(es); } if (nrMatchers >= minimumNrMatchers) { res.SetValue(sumScore); res.SetDescription("sum over at least " + minimumNrMatchers + " of " + subScorers.Count + ":"); } else { res.SetValue(0.0f); res.SetDescription(nrMatches + " match(es) but at least " + minimumNrMatchers + " of " + subScorers.Count + " needed"); } return res; }
/// <summary>Explain the score of a document. /// TODO: Also show the total score. /// See BooleanScorer.explain() on how to do this. /// </summary> public override Explanation Explain(int doc) { Explanation res = new Explanation(); res.SetDescription("required, optional"); res.AddDetail(reqScorer.Explain(doc)); res.AddDetail(optScorer.Explain(doc)); return res; }