Why it matters

Active learning shapes label efficiency. Understanding shapes ops.

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The architecture

Score examples: uncertainty + diversity + model disagreement.

Top-K for labeling.

Retrain + repeat.

Active learning loopScore examplesuncertainty + diverseSelect top-Kfor labelingRetrain + repeatimprove modelQuery-by-committee + uncertainty sampling + diversity are common heuristics
Active learning.
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How it works end to end

Uncertainty: model confidence low.

Diversity: cover input space.

Committee: multiple models disagree.