What does “Retrieval” mean?

A curated collection of documents or records used for retrieval, support automation, or grounding responses.

The proportion of retrieved items that are relevant to the user's query.

A method that retrieves external knowledge and feeds it into generation at inference time.

A retrieval method that generates multiple query variants, retrieves results for each, and fuses the rankings.

Training approaches that let a model keep learning from new data without forgetting prior knowledge.

Compressing knowledge from a large teacher model into a smaller student model.