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One-Shot Learning

A machine learning approach where models can learn to recognize new categories or perform new tasks from just a single example, mimicking humans' ability to generalize from minimal experience.

One-shot learning is particularly important for applications where collecting large datasets is impractical, such as facial recognition for access control or identifying rare medical conditions. Siamese networks, which compare pairs of examples, were among the first successful one-shot architectures. Modern LLMs have brought one-shot learning to language tasks, where a single example in the prompt can guide the model's behavior. The approach is closely related to few-shot and zero-shot learning along the spectrum of data efficiency.

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