What is convergence rate in Gradient Descent?

Updated May 16, 2026

Short answer

Convergence rate describes how fast Gradient Descent approaches the optimum.

Deep explanation

Depending on function properties, GD may converge linearly, sublinearly, or superlinearly. Strongly convex functions achieve linear convergence, while non-convex problems often have slower guarantees.

Real-world example

Training efficiency comparison across optimization algorithms.

Common mistakes

  • Assuming all optimization problems converge equally fast.

Follow-up questions

  • What affects convergence rate?
  • Which optimizers converge faster?

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