La factualité est la propriété d’une sortie de modèle d’être cohérente avec la réalité ou avec des faits établis. Elle est particulièrement importante pour les tâches de question-réponse et d’information, bien que les tâches créatives puissent légitimement privilégier l’imagination plutôt que l’exactitude factuelle.
Within the ML world, a property describing a model whose output is based on reality. Factuality is a concept rather than a metric. For example, suppose you send the following prompt to a large language model: What is the chemical formula for table salt? A model optimizing factuality would respond: NaCl It is tempting to assume that all models should be based on factuality. However, some prompts, such as the following, should cause a generative AI model to optimize creativity rather than factuality. Tell me a limerick about an astronaut and a caterpillar. It is unlikely that the resulting limerick would be based on reality. Contrast with groundedness.