“…• SDS (Bishop, 1989a-b) • Bacteria Swarm Foraging Optimisation (BSFO) or Bacteria Foraging Optimisation Algorithm (BFAO) (Passino, 2000;2001;Liu and Passino, 2002;Müller et al, 2002;Kim et al, 2007;Munoz et al, 2008) • Artificial Immune System (AIS) (de Castro and Timmis, 2002) • Carabid Beetle Foraging (Robinson et al, 2004) • Wasp or Wasp Colony Algorithm (Li and Cheng, 2005;Cao et al, 2008) • Physarum Solver (Tero et al, 2006), are also not considered in this work since they were not often used for PSPs.…”