Rag.Reranker.Passthrough (rag v0.3.4)

A simple passthrough reranker that returns documents unchanged.

This reranker is useful for:

Baseline comparisons when evaluating reranking strategies
Testing pipelines without the overhead of LLM calls
Cases where the initial retrieval scores are already optimal

Usage

reranker = %Rag.Reranker.Passthrough{}
{:ok, documents} = Rag.Reranker.rerank(reranker, query, documents)

The documents are returned in their original order with original scores.

Summary

Types

t()

Functions

rerank(reranker, query, documents, opts)

Returns documents unchanged without any reranking.

Types

t()

@type t() :: %Rag.Reranker.Passthrough{}

Functions

rerank(reranker, query, documents, opts)

@spec rerank(t(), String.t(), [Rag.Reranker.document()], keyword()) ::
  {:ok, [Rag.Reranker.document()]}

Returns documents unchanged without any reranking.

Parameters

reranker - The passthrough reranker struct
query - The search query (ignored)
documents - List of documents
opts - Options (ignored)

Returns

{:ok, documents} - The same documents in the same order

Examples

reranker = %Rag.Reranker.Passthrough{}
docs = [
  %{id: 1, content: "...", score: 0.8, metadata: %{}},
  %{id: 2, content: "...", score: 0.6, metadata: %{}}
]
{:ok, ^docs} = Rag.Reranker.Passthrough.rerank(reranker, "query", docs, [])