# Closed-Book Question Answering

> Source: https://sukruyusufkaya.com/en/glossary/closed-book-question-answering
> Updated: 2026-05-13T21:01:05.450Z
> Type: glossary
> Category: dogal-dil-isleme
**TLDR:** An approach that answers questions using only the information stored in model parameters, without external document access.

<p>Closed-book question answering refers to generating answers from the model’s internal parametric memory without retrieving external documents. This can work well for some general-knowledge questions, but it is limited in freshness and factual reliability. In enterprise or high-risk scenarios, retrieval-supported open-book setups are often safer. Still, it remains important for understanding how much knowledge a model has internalized.</p>