WCCI2020

Problem Difficulty Classification

Difficulty Mode	Training Set	Testing Set
easy	0, 1, 2, 3, 4, 5	6, 7, 8, 9
difficult	6, 7, 8, 9	0, 1, 2, 3, 4, 5

Note: When difficulty is ‘all’, both training and testing sets contain all problems (0-9).

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WCCI2020 comprises 10 multi-task problem instances, each of which contains 50 basic problems. Optional basic problems include Shpere, Rosenbrock, Ackley, Rastrigin, Griewank, Weierstrass and Schwefel, which are all 50D.

• Paper：WCCI2020

• Code Resource： WCCI2020

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