public override Explanation Explain(int doc)
{
Explanation tfExplanation = new Explanation();
SkipTo(doc);
float phraseFreq = (Doc() == doc)?freq:0.0f;
tfExplanation.SetValue(GetSimilarity().Tf(phraseFreq));
tfExplanation.SetDescription("tf(phraseFreq=" + phraseFreq + ")");
return(tfExplanation);
}
public override Explanation Explain(int doc)
{
Explanation tfExplanation = new Explanation();
SkipTo(doc);
float phraseFreq = (Doc() == doc)?freq:0.0f;
tfExplanation.SetValue(GetSimilarity().Tf(phraseFreq));
tfExplanation.SetDescription("tf(phraseFreq=" + phraseFreq + ")");
return tfExplanation;
}
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 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);
}
