io.lettuce.core.search.arguments.hybrid

Class Combiners.RRF<K>

java.lang.Object

io.lettuce.core.search.arguments.hybrid.Combiner<K>

io.lettuce.core.search.arguments.hybrid.Combiners.RRF<K>

Type Parameters:

K - Key type

Enclosing class:

Combiners

public static class Combiners.RRF<K>
extends Combiner<K>

RRF (Reciprocal Rank Fusion) combiner.

Combines rankings from text and vector search using reciprocal rank fusion. RRF formula: score = 1 / (CONSTANT + rank_in_window)

Method Summary

Modifier and Type	Method and Description
Combiners.RRF<K>	constant(double constant) Set the CONSTANT parameter - constant added to rank to prevent division by zero.
protected List<Object>	getOwnArgs() Get the combiner-specific arguments.
Combiners.RRF<K>	window(int window) Set the WINDOW parameter - number of top results to consider from each ranking.

Methods inherited from class io.lettuce.core.search.arguments.hybrid.Combiner

as, build, getName

Methods inherited from class java.lang.Object

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

Method Detail

window

public Combiners.RRF<K> window(int window)

Set the WINDOW parameter - number of top results to consider from each ranking.

Parameters:

window - number of top results

Returns:

this RRF instance

constant

public Combiners.RRF<K> constant(double constant)

Set the CONSTANT parameter - constant added to rank to prevent division by zero.

Parameters:

constant - constant value (typically 60)

Returns:

this RRF instance

getOwnArgs

protected List<Object> getOwnArgs()

Description copied from class: Combiner

Get the combiner-specific arguments.

Specified by:

getOwnArgs in class Combiner<K>

Returns:

list of combiner-specific arguments