Spare parts are goods that consist of several components that form a single unit and have certain functions. To facilitate companies in selecting suppliers, a supplier selection model is needed to make it easier for companies to select suppliers and make it easier to see strategic directions to take several criteria from suppliers to achieve priorities. This research was conducted at a manufacturing company engaged in car spare parts with rubber raw materials. In this study the problems that occur are the difficulty of the company in selecting suppliers based on criteria that are in accordance with the company and the delay in the receipt of raw materials, and the lack of raw materials supplied from each supplier. This study aims to classify suppliers based on desired criteria by the company and to design a supplier selection model in the long term. The J48 algorithm is produced by a supplier selection model with 2 rule selection models to classify efficient suppliers and inefficient suppliers. The accuracy of the Decision Tree model is 90.8547%, the MAE error value is 0.1256. From the J48 algorithm the biggest gain is the criteria for quality, price, delivery, and warranty and complaint services.
Spare parts are goods that consist of several components that form a single unit and have certain functions. The development of the number of motorized vehicles in Indonesia from 2012-2017 has always increased, with a growth rate of 31.88%. The selection of the right supplier is not only profitable for the company but also can increase customer satisfaction. Therefore in the selection of suppliers the company must have a system of selection and evaluation of suppliers of raw materials and components. This research was carried out on car spare parts production companies with raw materials in the form of rubber. This study aims to obtain criteria and subcriteria in selecting suppliers of spare parts raw materials by using Delphi Method. The results of the Delphi Method obtained 9 supplier selection criteria, namely: Quality, Delivery, Guarantee and Complaint Service, Price, Manufacturing Capability, Quality Management System, Documentation and Self Audit, Development Design Capability, and Cost Reduction. Based on the 9 criteria obtained 55 sub-criteria that can be used by companies in selecting suppliers of spare parts raw materials.
Supplier have an important role in the availability of raw materials for the ongoing production activities of a company. The selection of the right supplier is not only profitable for the company but also can increase customer satisfaction. Therefore, in the selection of suppliers the company must have a system of selection and evaluation of suppliers of raw materials and components. The main purpose of the supplier selection process is to reduce purchasing risk, maximize overall value for buyers, and build long-term relationships between buyers and suppliers. Supplier selection model is used to facilitate the strategic direction of supply chain management to take several criteria from suppliers to achieve the priorities desired by the company. This research was conducted at a manufacturing company engaged in auto parts. In this study the problem is that the company chooses suppliers to supply raw materials based solely on the list of suppliers who are willing to agree on the price offered by the company with suppliers so that the company has difficulty choosing suppliers to become long-term suppliers and delays in the supply of raw materials from each-one supplier. This study aims to create a supplier selection model framework to classify each supplier so that it can be used as a supplier in the long term. This study uses the Artificial Neural Network (ANN) method with the multi layer perceptron classification technique. Artificial Neural Network is used to create an efficient and inefficient supplier selection model. The accuracy of the ANN model is 85.9756%, the statistical kappa value is 0.7152, with an MAE error value of 0.1478, the MSE error value is 0.3107. From the ANN obtained 4 criteria used in supplier selection, namely the criteria of quality, delivery, price, and warranty and complaint services.
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