抄録
In this paper, we are going to propose trend analysis using the data envelopment analysis. We have been studying characteristic analysis of products using DEA in the past study, and showed that with publication data, we can analyze the characteristics products in the same categories, based on analyzing weight on each criteria. In this study, we will propose a method to measure the growth of frontier. Then by using history of the change in the shape of characters we will propose a method of looking at trends of the products that will fit to the customers.
