Method of extracting appliance pricing factors in e-commerce. - Tatsuya Ogura; Kazuhiko Tsuda (KES, 2018)

Estimating the Supply and Demand Balance of the Market by exploring the Gross Profit Transition in E-commerce business. - Tatsuya Ogura; Kazuhiko Tsuda (KES, 2019)

Fluctuation of Commodity Price in the EC Market and Its Factor Analysis. - Tatsuya Ogura; Kazuhiko Tsuda (KES, 2020)