Guess the Optimizer: can you identify all four from their loss-surface trajectories?

cneuralnetwork · x · 2026-11-04

A fun "Guess the Optimizer" quiz image plots four descent trajectories (A–D) on the same 2D loss surface — zigzag oscillation, smooth arc with a late hook, straight path with a turn, and gentle curved convergence — challenging readers to identify which optimizer each one is and drop their guesses in the replies. A nice eye test for anyone familiar with how SGD, momentum, Adam and friends actually move.

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