Correction to: Complex & Intelligent Systems https://doi.org/10.1007/s40747-022-00766-x

There is missing text in the original publication. The text has given below:

The sixth paper included in the special issue is entitled “Surrogate-assisted evolutionary algorithm for expensive constrained multi-objective discrete optimization problems” authored by Q. Gu et al., which proposes a random forest-assisted evolutionary algorithm to deal with expensive constrained multi-objective discrete optimization problems. Also, an improved stochastic ranking strategy based on the fitness mechanism and adaptive probability operator is presented, which considers both convergence and diversity to advance the quality of candidate solutions. Numerical experiments on benchmark problems demonstrate that the proposed algorithm is very promising for the expensive constrained multi-objective discrete optimization problems.

The original article has been corrected.