In-Context Retrieval-Augmented Language Models
Автор: Brahmagupta
Загружено: 2026-02-16
Просмотров: 9
Описание: The provided text introduces In-Context Retrieval-Augmented Language Modeling (RALM), a simple yet effective method for improving language model performance without modifying the underlying architecture. Instead of retraining models, this approach prepends relevant documents directly to the input prefix, allowing off-the-shelf systems to access external knowledge and reduce factual errors. Research findings indicate that using a sparse BM25 retriever frequently—roughly every four tokens—provides performance gains equivalent to doubling or tripling a model's parameter size. The authors further demonstrate that specialised reranking mechanisms, including zero-shot and self-supervised predictive rerankers, significantly boost accuracy across diverse corpora and question-answering tasks. By maintaining frozen model weights, In-Context RALM offers a practical path for deploying grounded AI through existing APIs and standard hardware. This framework successfully bridges the gap between static pretraining and the need for dynamic, verifiable information in machine-generated text.
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