Rancang Bangun Sistem Informasi Inventori Gudang Mengguanakan Metode Incremental dan Double Exponential Smoothing (Studi Kasus : Rs. Wikarta Mandala)

The application of information system technology in a company or institution needs to be done, to improve the efficiency and effectiveness of a job. In this case study, Wikarta Mandala Hospital has not implemented information system technology for business process management that runs in the warehouse. Data collection on mutations of goods and recording of warehouse stock is still carried out using bookkeeping recaps. Data loss and delays in the compilation of warehouse reports, as well as errors when recording warehouse stock often occur. This will also affect the process of procurement of goods by the head of the warehouse and the warehouse officer must improve the report which causes redundant (double work). The warehouse inventory information system was created to minimize this. The development of information systems, use the incremental model to divide functional requirements into system modules. In this case, the application of additional methods is very helpful for resolving complex system requirements. In addition, the warehouse inventory information system also applies forecasting using the Double Exponential Smoothing method to predict the release of warehouse stock for the next period. With an alpha value (α) = 0.9 which results in a MAPE value of 0.29%. The resulting MAPE value <10% (less than) so that it can be categorized as good.