A continual learner updates after its initial deployment or training phase as new data and experiences arrive. The goal is to adapt to changing tasks and environments without rebuilding the entire model from the beginning.
The main difficulty is preserving earlier capabilities while adding new ones. Safe deployment also requires versioning, evaluation and controls so ongoing updates do not quietly change critical behavior or goals.
ELI5
Continual learning lets an AI system improve over time as new data, tasks, feedback, or operating conditions appear. The challenge is learning useful new behavior without losing older skills or turning recent mistakes into permanent habits.
For example, support outcomes may reveal a new type of request that future training should cover. The new behavior should be evaluated separately before deployment so privacy problems, bad feedback loops, or catastrophic forgetting do not replace a known-good model.
