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C# Lucene.Net.Index.IndexReader.Norms方法代码示例

本文整理汇总了C#中Lucene.Net.Index.IndexReader.Norms方法的典型用法代码示例。如果您正苦于以下问题：C# Lucene.Net.Index.IndexReader.Norms方法的具体用法？C# Lucene.Net.Index.IndexReader.Norms怎么用？C# Lucene.Net.Index.IndexReader.Norms使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Lucene.Net.Index.IndexReader的用法示例。


在下文中一共展示了Lucene.Net.Index.IndexReader.Norms方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: Explain

			public virtual 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('\"');
				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(reader.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(" + 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:");
				
				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;
			}
开发者ID:vikasraz，项目名称:indexsearchutils，代码行数:72，代码来源:PhraseQuery.cs

示例2: Explain

        public virtual Explanation Explain(IndexReader reader, int doc)
        {
            Explanation result = new Explanation();
            result.SetDescription("weight(" + GetQuery() + " in " + doc + "), product of:");
            System.String field = ((SpanQuery) GetQuery()).GetField();

            System.Text.StringBuilder docFreqs = new System.Text.StringBuilder();
            System.Collections.IEnumerator i = terms.GetEnumerator();
            while (i.MoveNext())
            {
                System.Collections.DictionaryEntry tmp = (System.Collections.DictionaryEntry) i.Current;
                Term term = (Term) tmp.Key;
                docFreqs.Append(term.Text());
                docFreqs.Append("=");
                docFreqs.Append(reader.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(" + 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
            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;
        }
开发者ID:vineelkovvuri，项目名称:ExtendableDesktopSearch，代码行数:67，代码来源:SpanWeight.cs

示例3: Scorer

			public virtual Scorer Scorer(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(), similarity, reader.Norms(Enclosing_Instance.field));
				else
					return new SloppyPhraseScorer(this, tps, Enclosing_Instance.GetPositions(), similarity, Enclosing_Instance.slop, reader.Norms(Enclosing_Instance.field));
			}
开发者ID:vikasraz，项目名称:indexsearchutils，代码行数:21，代码来源:PhraseQuery.cs

示例4: Explain

		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;
		}
开发者ID:Inzaghi2012，项目名称:teamlab.v7.5，代码行数:55，代码来源:SpanWeight.cs

示例5: Scorer

 public virtual Scorer Scorer(IndexReader reader)
 {
     return new SpanScorer(query.GetSpans(reader), this, similarity, reader.Norms(query.GetField()));
 }
开发者ID:vineelkovvuri，项目名称:ExtendableDesktopSearch，代码行数:4，代码来源:SpanWeight.cs

示例6: Explain

			public override Explanation Explain(IndexReader reader, int doc)
			{
				
				ComplexExplanation result = new ComplexExplanation();
				result.Description = "weight(" + Query + " in " + doc + "), product of:";
				
				Explanation expl = new Explanation(idf, idfExp.Explain());
				
				// explain query weight
				Explanation queryExpl = new Explanation();
				queryExpl.Description = "queryWeight(" + Query + "), product of:";
				
				Explanation boostExpl = new Explanation(Enclosing_Instance.Boost, "boost");
				if (Enclosing_Instance.Boost != 1.0f)
					queryExpl.AddDetail(boostExpl);
				queryExpl.AddDetail(expl);
				
				Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm");
				queryExpl.AddDetail(queryNormExpl);
				
				queryExpl.Value = boostExpl.Value * expl.Value * queryNormExpl.Value;
				
				result.AddDetail(queryExpl);
				
				// explain field weight
				System.String field = Enclosing_Instance.term.Field;
				ComplexExplanation fieldExpl = new ComplexExplanation();
				fieldExpl.Description = "fieldWeight(" + Enclosing_Instance.term + " in " + doc + "), product of:";

                Explanation tfExplanation = new Explanation();
                int tf = 0;
                TermDocs termDocs = reader.TermDocs(enclosingInstance.term);
                if (termDocs != null)
                {
                    try
                    {
                        if (termDocs.SkipTo(doc) && termDocs.Doc == doc)
                        {
                            tf = termDocs.Freq;
                        }
                    }
                    finally
                    {
                        termDocs.Close();
                    }
                    tfExplanation.Value = similarity.Tf(tf);
                    tfExplanation.Description = "tf(termFreq(" + enclosingInstance.term + ")=" + tf + ")";
                }
                else
                {
                    tfExplanation.Value = 0.0f;
                    tfExplanation.Description = "no matching term";
                }
                fieldExpl.AddDetail(tfExplanation);
				fieldExpl.AddDetail(expl);
				
				Explanation fieldNormExpl = new Explanation();
				byte[] fieldNorms = reader.Norms(field);
				float fieldNorm = fieldNorms != null?Similarity.DecodeNorm(fieldNorms[doc]):1.0f;
				fieldNormExpl.Value = fieldNorm;
				fieldNormExpl.Description = "fieldNorm(field=" + field + ", doc=" + doc + ")";
				fieldExpl.AddDetail(fieldNormExpl);

                fieldExpl.Match = tfExplanation.IsMatch;
                fieldExpl.Value = tfExplanation.Value * expl.Value * fieldNormExpl.Value;
				
				result.AddDetail(fieldExpl);
				System.Boolean? tempAux = fieldExpl.Match;
				result.Match = tempAux;
				
				// combine them
				result.Value = queryExpl.Value * fieldExpl.Value;
				
				if (queryExpl.Value == 1.0f)
					return fieldExpl;
				
				return result;
			}
开发者ID:JokerMisfits，项目名称:linux-packaging-mono，代码行数:78，代码来源:TermQuery.cs

示例7: Scorer

			public override Scorer Scorer(IndexReader reader, bool scoreDocsInOrder, bool topScorer)
			{
				return new PayloadTermSpanScorer(this, (TermSpans) internalQuery.GetSpans(reader), this, similarity, reader.Norms(internalQuery.Field));
			}
开发者ID:modulexcite，项目名称:Xamarin-Lucene.Net，代码行数:4，代码来源:PayloadTermQuery.cs

示例8: Explain

            public override Explanation Explain(IndexReader reader, int doc)
            {
                ComplexExplanation result = new ComplexExplanation();
                result.Description = "weight(" + Query + " in " + doc + "), product of:";
                
                Explanation idfExpl = new Explanation(idf, "idf(" + Query + ")");
                
                // explain query weight
                Explanation queryExpl = new Explanation();
                queryExpl.Description = "queryWeight(" + Query + "), product of:";
                
                Explanation boostExpl = new Explanation(Enclosing_Instance.Boost, "boost");
                if (Enclosing_Instance.Boost != 1.0f)
                    queryExpl.AddDetail(boostExpl);
                
                queryExpl.AddDetail(idfExpl);
                
                Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm");
                queryExpl.AddDetail(queryNormExpl);
                
                queryExpl.Value = boostExpl.Value * idfExpl.Value * queryNormExpl.Value;
                
                result.AddDetail(queryExpl);
                
                // explain field weight
                ComplexExplanation fieldExpl = new ComplexExplanation();
                fieldExpl.Description = "fieldWeight(" + Query + " in " + doc + "), product of:";

                PhraseScorer scorer = (PhraseScorer)Scorer(reader, true, false);
                if (scorer == null)
                {
                    return new Explanation(0.0f, "no matching docs");
                }
                Explanation tfExplanation = new Explanation();
                int d = scorer.Advance(doc);
                float phraseFreq = (d == doc) ? scorer.CurrentFreq() : 0.0f;
                tfExplanation.Value = similarity.Tf(phraseFreq);
                tfExplanation.Description = "tf(phraseFreq=" + phraseFreq + ")";
                fieldExpl.AddDetail(tfExplanation);
                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.Value = fieldNorm;
                fieldNormExpl.Description = "fieldNorm(field=" + Enclosing_Instance.field + ", doc=" + doc + ")";
                fieldExpl.AddDetail(fieldNormExpl);
                
                fieldExpl.Match = tfExplanation.IsMatch;
                fieldExpl.Value = tfExplanation.Value * idfExpl.Value * fieldNormExpl.Value;
                
                result.AddDetail(fieldExpl);
                System.Boolean? tempAux = fieldExpl.Match;
                result.Match = tempAux;
                
                // combine them
                result.Value = queryExpl.Value * fieldExpl.Value;
                
                if (queryExpl.Value == 1.0f)
                    return fieldExpl;
                
                return result;
            }
开发者ID:Nangal，项目名称:lucene.net，代码行数:63，代码来源:MultiPhraseQuery.cs

示例9: Explain

			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;
			}
开发者ID:Inzaghi2012，项目名称:teamlab.v7.5，代码行数:59，代码来源:MultiPhraseQuery.cs

示例10: Scorer

 public override Scorer Scorer(IndexReader reader, bool scoreDocsInOrder, bool topScorer)
 {
     return new PayloadNearSpanScorer(enclosingInstance, query.GetSpans(reader), this, similarity, reader.Norms(query.GetField()));
 }
开发者ID:BackupTheBerlios，项目名称:lyra2-svn，代码行数:4，代码来源:PayloadNearQuery.cs

示例11: Scorer

			public override Scorer Scorer(IndexReader reader, bool scoreDocsInOrder, bool topScorer)
			{
				return new MatchAllScorer(enclosingInstance, reader, similarity, this, Enclosing_Instance.normsField != null?reader.Norms(Enclosing_Instance.normsField):null);
			}
开发者ID:kstenson，项目名称:NHibernate.Search，代码行数:4，代码来源:MatchAllDocsQuery.cs

示例12: Scorer

			public virtual Scorer Scorer(IndexReader reader)
			{
				TermDocs termDocs = reader.TermDocs(Enclosing_Instance.term);
				
				if (termDocs == null)
					return null;
				
				return new TermScorer(this, termDocs, similarity, reader.Norms(Enclosing_Instance.term.Field()));
			}
开发者ID:vikasraz，项目名称:indexsearchutils，代码行数:9，代码来源:TermQuery.cs

示例13: Explain

			public virtual Explanation Explain(IndexReader reader, int doc)
			{
				
				ComplexExplanation result = new ComplexExplanation();
				result.SetDescription("weight(" + GetQuery() + " in " + doc + "), product of:");
				
				Explanation idfExpl = new Explanation(idf, "idf(docFreq=" + reader.DocFreq(Enclosing_Instance.term) + ", numDocs=" + reader.NumDocs() + ")");
				
				// 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
				System.String field = Enclosing_Instance.term.Field();
				ComplexExplanation fieldExpl = new ComplexExplanation();
				fieldExpl.SetDescription("fieldWeight(" + Enclosing_Instance.term + " 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.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;
			}
开发者ID:vikasraz，项目名称:indexsearchutils，代码行数:55，代码来源:TermQuery.cs

示例14: Scorer

			public virtual Scorer Scorer(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(), similarity, reader.Norms(Enclosing_Instance.field));
				else
					return new SloppyPhraseScorer(this, tps, Enclosing_Instance.GetPositions(), similarity, Enclosing_Instance.slop, reader.Norms(Enclosing_Instance.field));
			}
开发者ID:ArsenShnurkov，项目名称:beagle-1，代码行数:28，代码来源:PhrasePrefixQuery.cs

示例15: Explain

			public override Explanation Explain(IndexReader reader, int doc)
			{
				
				Explanation result = new Explanation();
				result.Description = "weight(" + Query + " 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 = 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.Description = "queryWeight(" + Query + "), product of:";
				
				Explanation boostExpl = new Explanation(Enclosing_Instance.Boost, "boost");
				if (Enclosing_Instance.Boost != 1.0f)
					queryExpl.AddDetail(boostExpl);
				queryExpl.AddDetail(idfExpl);
				
				Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm");
				queryExpl.AddDetail(queryNormExpl);
				
				queryExpl.Value = boostExpl.Value * idfExpl.Value * queryNormExpl.Value;
				
				result.AddDetail(queryExpl);
				
				// explain field weight
				Explanation fieldExpl = new Explanation();
				fieldExpl.Description = "fieldWeight(" + Enclosing_Instance.field + ":" + query + " in " + doc + "), product of:";
				
				PhraseScorer scorer = (PhraseScorer)Scorer(reader, true, false);
				if (scorer == null)
				{
					return new Explanation(0.0f, "no matching docs");
				}
                Explanation tfExplanation = new Explanation();
                int d = scorer.Advance(doc);
                float phraseFreq = (d == doc) ? scorer.CurrentFreq() : 0.0f;
                tfExplanation.Value = similarity.Tf(phraseFreq);
                tfExplanation.Description = "tf(phraseFreq=" + phraseFreq + ")";

                fieldExpl.AddDetail(tfExplanation);
				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.Value = fieldNorm;
				fieldNormExpl.Description = "fieldNorm(field=" + Enclosing_Instance.field + ", doc=" + doc + ")";
				fieldExpl.AddDetail(fieldNormExpl);

                fieldExpl.Value = tfExplanation.Value * idfExpl.Value * fieldNormExpl.Value;
				
				result.AddDetail(fieldExpl);
				
				// combine them
				result.Value = queryExpl.Value * fieldExpl.Value;
				
				if (queryExpl.Value == 1.0f)
					return fieldExpl;
				
				return result;
			}
开发者ID:JokerMisfits，项目名称:linux-packaging-mono，代码行数:78，代码来源:PhraseQuery.cs


注：本文中的Lucene.Net.Index.IndexReader.Norms方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。