Abstract
From the moment cellphones first appeared in Japan 30 years ago, their sales have been growing at a dramatic pace. However, Japan's cellphone market is now saturated. It is monopolized by three major cellphone carriers: NTT DoCoMo, KDDI, and SoftBank Mobile. These three companies are competing fiercely for market share, offering a wide range of products and services, including phone models with an ever greater number of features and a wide variety of price plans. From the consumer's standpoint, this has led to increased purchasing costs. In response to this situation, this paper focuses on the creation of a system designed to enable consumers to choose a cellphone carrier relatively easily, using a classifier. The system is intended to help reduce purchasing costs by offering a relatively effective and convenient selection method to consumers faced with having to choose among the three cellphone carriers.
