<span>Worldwide, the COVID-19 widespread has significant impact on a great number of people. The hospital admittance issue for patients with been optimized by previous research. Identifying symptoms that can be used to determine patient's health status, whether they are dead or alive it is difficult task medical professionals. To solve this issue, multi-objective group counselling optimiz...

This paper uses the L1−norm and the concept of the non-dominated vector, topropose a method to find a well-dispersed subset of non-dominated (WDSND) vectorsof a multi-objective mixed integer linear programming (MOMILP) problem.The proposed method generalizes the proposed approach by Tohidi and Razavyan[Tohidi G., S. Razavyan (2014), determining a well-dispersed subset of non-dominatedvectors of...