"Unseen"

"Unseen" refers to something that has not been observed, noticed, or directly experienced. In various contexts, it can describe information, events, or objects that exist but are not currently visible or apparent to the observer. For example, in machine learning, "unseen" data refers to new data that a model has not been trained on and thus has not been encountered during its development. Overall, "unseen" highlights the presence of something outside immediate perception or prior knowledge.