Distribution (Jackrabbit Oak 1.78.0 API)

java.lang.Object
- org.apache.lucene.search.similarities.Distribution

Direct Known Subclasses:

DistributionLL, DistributionSPL
```
public abstract class Distribution
extends Object
```
The probabilistic distribution used to model term occurrence in information-based models.

See Also:

IBSimilarity

Constructor Summary

Constructors
Constructor Description

Distribution()
Sole constructor.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`Explanation`	`explain(BasicStats stats, float tfn, float lambda)`	Explains the score.
`abstract float`	`score(BasicStats stats, float tfn, float lambda)`	Computes the score.
`abstract String`	`toString()`	Subclasses must override this method to return the name of the distribution.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Distribution
```
public Distribution()
```
    Sole constructor. (For invocation by subclass constructors, typically implicit.)
- Method Detail
  - score
```
public abstract float score(BasicStats stats,
                            float tfn,
                            float lambda)
```
    Computes the score.
  - explain
```
public Explanation explain(BasicStats stats,
                           float tfn,
                           float lambda)
```
    Explains the score. Returns the name of the model only, since both tfn and lambda are explained elsewhere.
  - toString
```
public abstract String toString()
```
    Subclasses must override this method to return the name of the distribution.
    
    Overrides:
    
    toString in class Object