“…• Building direct relation matrix (A) based on the average of influence value from a i to a j . [10], [26], [30], [36], [38]- [42] 5 Inventory level [17], [31], [32], [39], [43], [44] 6 Tariff of service [17], [21], [34], [38], [44] 7 Quality of service [17], [21], [30], [34], [36]- [38], [40], [43] [7], [10], [21], [34], [43], [47], [52], [53] Integration of information system [20], [41], [50], [52] Delivery [32], [40], [45], [47] Education and training [10], [26], [34], [35], [38] Research & Development…”