org.apache.lucene.search.similarities
Class Normalization.NoNormalization
java.lang.Object
org.apache.lucene.search.similarities.Normalization
org.apache.lucene.search.similarities.Normalization.NoNormalization
- Enclosing class:
- Normalization
public static final class Normalization.NoNormalization
- extends Normalization
Implementation used when there is no normalization.
Method Summary |
Explanation |
explain(BasicStats stats,
float tf,
float len)
Returns an explanation for the normalized term frequency. |
float |
tfn(BasicStats stats,
float tf,
float len)
Returns the normalized term frequency. |
String |
toString()
Subclasses must override this method to return the code of the
normalization formula. |
Normalization.NoNormalization
public Normalization.NoNormalization()
tfn
public final float tfn(BasicStats stats,
float tf,
float len)
- Description copied from class:
Normalization
- Returns the normalized term frequency.
- Specified by:
tfn
in class Normalization
len
- the field length.
explain
public final Explanation explain(BasicStats stats,
float tf,
float len)
- Description copied from class:
Normalization
- Returns an explanation for the normalized term frequency.
The default normalization methods use the field length of the document
and the average field length to compute the normalized term frequency.
This method provides a generic explanation for such methods.
Subclasses that use other statistics must override this method.
- Overrides:
explain
in class Normalization
toString
public String toString()
- Description copied from class:
Normalization
- Subclasses must override this method to return the code of the
normalization formula. Refer to the original paper for the list.
- Specified by:
toString
in class Normalization
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