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An optimization method that updates model parameters in the direction that reduces error. The algorithm computes how the loss changes with respect to each parameter, then takes a small step the opposite way. Variants such as stochastic gradient descent and Adam differ in how they estimate the gradient and scale the step.
Training jobs fail in ways that only make sense if you understand the optimizer. Knowing why a learning rate is too high, why a model diverges, or why training plateaus is part of every ML engineering interview.
An optimization method that updates model parameters in the direction that reduces error. The algorithm computes how the loss changes with respect to each parameter, then takes a small step the opposite way. Variants such as stochastic gradient descent and Adam differ in how they estimate the gradient and scale the step.
Training jobs fail in ways that only make sense if you understand the optimizer. Knowing why a learning rate is too high, why a model diverges, or why training plateaus is part of every ML engineering interview.
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.
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