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Compare batch, stochastic, and mini-batch gradient descent (and momentum).

Everyone says 'gradient descent,' but the batch-size choice and momentum are the real interview content. The signal is the noise-vs-cost tradeoff across batch/SGD/mini-batch and why momentum earns its keep.

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

Everyone says 'gradient descent,' but the batch-size choice and momentum are the real interview content. The signal is the noise-vs-cost tradeoff across batch/SGD/mini-batch and why momentum earns its keep.

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