Reranker

RerankerManager

Cross-Encoder reranker. The local Jina model jinaai/jina-reranker-v2-base-multilingual is CC-BY-NC-4.0 and is not a production default. It is loaded only when POWER_ALLOW_NONCOMMERCIAL_MODELS=1 is set for permitted non-commercial use. Otherwise configure a licensed reranker; the code fails before downloading the NC model.

POWER_EMBED_PROVIDER=qwen3 selects Qwen3-Reranker-0.6B-ONNX; its license and revision still require an independent release-policy decision.

Constructor

RerankerManager(model_name: str = "jinaai/jina-reranker-v2-base-multilingual")

• model_name: the cross-encoder to load when the license policy permits it.

Methods

rerank(query: str, documents: list[str]) -> list[float]

Predict relevance scores for a list of document strings against a query.

• Parameters:
  • query (str): The search query.
  • documents (list of strings): The documents to evaluate.
• Returns: A list of floats representing the predicted relevance score for each document (higher score means more relevant).