“…The grouping genetic algorithm was introduced by Falkenauer in Falkenauer (1992), as a robust algorithm to manage problems in which items must be assigned to different groups. Since then, this approach has been successfully applied to a large amount of assignment and location problems (Agustín-Blas, Salcedo-Sanz, Ortiz-García, Portilla-Figueras, & Pérez-Bellido, 2009;Brown & Vroblefski, 2004, 2005De Lit, Falkenauer, & Delchambre, 2000;Falkenauer, 1992Falkenauer, , 1998Hung, Sumichrast, & Brown, 2003;James, Brown, & Keeling, 2007a, James, Vroblefski, & Nottingham, 2007b, in very different application fields. In the present case, the grouping genetic algorithm is hybridized with a repairing procedure to ensure finding feasible solutions, and with a local search to improve its performance for the case of the WiFiDP.…”