Package 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.

## Nested Class Summary

## Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Normalization

`Normalization.NoNormalization`

## Constructor Summary

Constructors
Constructor
Description
`NoNormalization()`
Sole constructor: parameter-free

## Method Summary

Modifier and Type
Method
Description
`Explanation`
`explain(BasicStats stats, double tf, double len)`
Returns an explanation for the normalized term frequency.
`double`
`tfn(BasicStats stats, double tf, double len)`
Returns the normalized term frequency.
`String`
`toString()`
Subclasses must override this method to return the code of the normalization formula.

### Methods inherited from class java.lang.Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

## Constructor Details

### NoNormalization

public NoNormalization()
Sole constructor: parameter-free

## Method Details

### tfn

public double tfn(BasicStats stats, double tf, double len)
Description copied from class: `Normalization`
Returns the normalized term frequency.

Specified by:
  `tfn` in class `Normalization`
Parameters:
  `len` - the field length.

### explain

public Explanation explain(BasicStats stats, double tf, double 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`