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Agentic RAG is a family of retrieval-augmented systems in which a model or controller can choose retrieval actions, inspect results, and sometimes search again before answering.
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These loops can add evidence-seeking flexibility and also add latency, cost, and failure points.
Classic RAG typically retrieves context for a query and supplies it to a language model. Agentic RAG refers to designs where an agent decides whether to retrieve, which query or source to use, and whether to continue after seeing results. A system may decompose a question, inspect evidence, filter or critique it, and reformulate a search. Research approaches differ: Self-RAG uses reflection tokens for retrieval and critique, while Adaptive-RAG selects retrieval strategies based on question complexity. These are specific methods, not a standard architecture or a guarantee that evidence supports the final answer.
Break a question about two products into separate searches, then compare retrieved evidence.
Choose between a document index and a structured database when the question requires different data.
Check whether retrieved passages support a draft before returning it.
Stop retrieval when evidence is sufficient or a step budget is reached.
Agentic retrieval remains a design space with tradeoffs among answer quality, evidence coverage, cost, and latency. Evaluate on the target corpus and questions, track whether sources support generated claims, and compare against a simpler retrieval baseline.
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Agentic RAG is a family of retrieval-augmented systems in which a model or controller can choose retrieval actions, inspect results, and sometimes search again before answering. These loops can add evidence-seeking flexibility and also add latency, cost, and failure points.
Agentic methods can make retrieval an iterative decision; classic RAG has multiple formulations, so this contrast is scoped to a simple single-shot baseline.
Descomponerse en subpreguntas y recuperar evidencia para cada una es una fortaleza central del RAG agente.
El agente trata a cada perro perdiguero como una herramienta y decide si usarlo y cómo en cada turno.
Calificar la relevancia de los fragmentos recuperados reduce el riesgo de que el contexto fuera de tema confunda al modelo.
Iterative retrieval can improve coverage for some questions, but it adds calls, latency, and cost and can still retrieve or reason incorrectly.
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