Set the position increment. This determines the position of this token
relative to the previous Token in a {@link TokenStream}, used in phrase
searching.
The default value is one.
Some common uses for this are:
Namespace: Lucene.Net.Analysis- Set it to zero to put multiple terms in the same position. This is useful if, e.g., a word has multiple stems. Searches for phrases including either stem will match. In this case, all but the first stem's increment should be set to zero: the increment of the first instance should be one. Repeating a token with an increment of zero can also be used to boost the scores of matches on that token.
- Set it to values greater than one to inhibit exact phrase matches. If, for example, one does not want phrases to match across removed stop words, then one could build a stop word filter that removes stop words and also sets the increment to the number of stop words removed before each non-stop word. Then exact phrase queries will only match when the terms occur with no intervening stop words.
Assembly: Lucene.Net (in Lucene.Net.dll) Version: 2.9.4.1
Syntax
C# |
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public virtual void SetPositionIncrement( int positionIncrement ) |
Visual Basic |
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Public Overridable Sub SetPositionIncrement ( _ positionIncrement As Integer _ ) |
Visual C++ |
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public: virtual void SetPositionIncrement( int positionIncrement ) |
Parameters
- positionIncrement
- Type: System..::..Int32
the distance from the prior term