Composition of product ability limit line by using data envelopment analysis

In Japan, many small and middle class industries are in the request of small amount and much variety of products, under the pressure of supply-chain management. In these companies, although they correct daily data, and sometimes they make database from them, they did not use them properly. Therefore, there are a lot of products which are delay in approved date, and which becomes a big problem for them. In this study, as a case study, we applied the philosophy of "shinayaka" approach to administration system of small industry. Among various existed data, we only limit data to three types; total amount of products, total setups that they need and total time that they work per day. Functions are product ability limit lines. Product ability limit line is upper boundary of product ability for each machine per day. From three data, we need to make product ability limit line of machine. In this study, we propose a method using Data Envelopment Analysis. We will show some useful data that come out through analyzing product ability limit line.