Sousa, J.M.

constraint optimization aggregation weight factors problem function operator decision weight objective factor t-norm solution membership membership functions programming 1.0 product optimization problem extension profit yager model flexibility satisfaction report preference labor objective function framework management trade-off system problem constraints result example importance kaymak algorithm formulation membership function degree method aspiration level van nauta lemke aggregated influence material yager operator analysis optimization objectives labor hours programming problem 0.5 aggregation operator programming problems section aggregation operators specification application research optimization results information archimedean t-norms optimization algorithm zimmermann preference information approach business optimization problems level order aspiration number control requirement hamacher product yager hamacher optimization framework labor constraint