“…Email: bek@biba.uni-bremen.de mining models. In order to increase the forecasting performances, more often hybrid models are developed to use the advantages of different models for a new combined approach (Liu, Ren, Choi, Hui, & Ng, 2013). Especially, hybrid models seem to be accurate in sales forecasting (Aburto & Weber, 2007;Khashei & Bijari, 2011;Lee, Shih, & Chen, 2012).…”