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How do you handle multiclass classification (softmax vs one-vs-rest vs one-vs-one)?

Some models are natively multiclass; others need a wrapper to stretch a binary classifier to K classes. The signal is knowing the three strategies and exactly when each one wins. Here is the answer.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Some models are natively multiclass; others need a wrapper to stretch a binary classifier to K classes. The signal is knowing the three strategies and exactly when each one wins. Here is the answer.

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