Optimal learning group formation: A multi-objective heuristic search strategy for enhancing inter-group homogeneity and intra-group heterogeneity.

•A heuristic search strategy was proposed for optimal learning group formation.•NSGA-II, a multi-objective optimization tool, was utilized for optimal grouping.•It was capable of enhancing inter-group homogeneity and Intra-group Heterogeneity.•Efficient and reliable fitness functions were defined to stop iterations.•Various characteristics of any data types and range of variations can be handled.