org.apache.lucene.search.similarities
Class DistributionLL
java.lang.Object
org.apache.lucene.search.similarities.Distribution
org.apache.lucene.search.similarities.DistributionLL
public class DistributionLL
- extends Distribution
Log-logistic distribution.
Unlike for DFR, the natural logarithm is used, as
it is faster to compute and the original paper does not express any
preference to a specific base.
- WARNING: This API is experimental and might change in incompatible ways in the next release.
Method Summary |
float |
score(BasicStats stats,
float tfn,
float lambda)
Computes the score. |
String |
toString()
Subclasses must override this method to return the name of the
distribution. |
DistributionLL
public DistributionLL()
score
public final float score(BasicStats stats,
float tfn,
float lambda)
- Description copied from class:
Distribution
- Computes the score.
- Specified by:
score
in class Distribution
toString
public String toString()
- Description copied from class:
Distribution
- Subclasses must override this method to return the name of the
distribution.
- Specified by:
toString
in class Distribution
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