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HelloAI glossary

World model

An AI system that builds an internal model of how a situation works and how it changes over time, so it can predict what happens next and plan actions, rather than only matching patterns in text or images. The idea is to give a system something closer to a working understanding of an environment, the way a person carries a rough mental map of a room. World models are central to robotics, simulation, and physical AI, where a system has to anticipate consequences before it acts. For a healthcare audience this is still mostly a frontier and research topic rather than everyday clinical software, but it is worth recognizing, because it is the direction behind a lot of the robotics and embodied-AI work that is starting to reach into care settings.

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