A note on task assignment of several problems

In the last two decades several papers have appeared in the literature where the multi-resource generalized assignment problem (MRGAP) was used to solve different problems. In these problems the number of variables grew exponentially. The purpose of this technical note is to present an assignment model that is compact and includes the models in the previous research papers as special cases. The proposed model is a generalization of MRGAP (GMRGAP). Computational experiment with CPLEX is presented to test effectiveness of the proposed model compared to some existing ones.