Sales Forecasting Based on AutoRegressive Integrated Moving Average and Recurrent Neural Network Hybrid Model. - Rankothge Gishan Hiranya Pemathilake; Sachith Paramie Karunathilake; Jayasekara Liyanapatabedige Achira Jeewaka Shamal; Gamage Upeksha Ganegoda (ICNC-FSKD, 2018)