Functions are sorted based on the optimizer's performance relative to other algorithms. The rank number on each image (e.g. #1) indicates its standing on that specific function compared to all other optimizers tested.

#7

Rosenbrock

#14

Styblinski-Tang

#16

NeuralCanyon

#19

Weierstrass

#22

Goldstein-Price

#24

Lévy 13

#32

QuantumWell

#49

Griewank

#51

GradientLabyrinth

#54

Gramacy & Lee 2D

#56

Rastrigin

#59

Beale

#60

Ackley

#67

EggHolder

#82

Langermann 2

#85

Langermann