Decoder. plain-English AI glossary

Meta-learning

▲ Rising

Training a model to get good at learning new tasks quickly, not just at one task.

Think of it like

Like a student who has learned how to study, so each new subject clicks faster than the last.

Example

A meta-learned model adapts to a brand-new classification task from just a handful of examples, having practiced adapting many times.

How it actually works

Meta-learning — “learning to learn” — trains across many tasks so the model acquires a strategy for fast adaptation, rather than mastering a single task. Approaches range from optimization-based methods that find easily-fine-tuned initializations to models that adapt in-context. It’s the formal cousin of what large models do when they pick up a task from a few prompt examples.

For product teams

The idea behind models that adapt fast to new tasks with little data — flexibility as a trained skill.

For engineers

Optimize across a task distribution for rapid adaptation; kin to in-context few-shot behavior in large models.

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