- Direct Known Subclasses:
public abstract class Normalization extends ObjectThis class acts as the base class for the implementations of the term frequency normalization methods in the DFR framework.
- See Also:
- WARNING: This API is experimental and might change in incompatible ways in the next release.
Nested Class Summary
Nested Classes Modifier and Type Class Description
Normalization.NoNormalizationImplementation used when there is no normalization.
Constructors Constructor Description
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description
explain(BasicStats stats, float tf, float len)Returns an explanation for the normalized term frequency.
tfn(BasicStats stats, float tf, float len)Returns the normalized term frequency.
toString()Subclasses must override this method to return the code of the normalization formula.
public abstract float tfn(BasicStats stats, float tf, float len)Returns the normalized term frequency.
len- the field length.
public Explanation explain(BasicStats stats, float tf, float len)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.