The Application of Rough Sets to Spectacle Cost in Japan

Tourism is so important and any countries must regard to tourism. We can forecast rate of traveling and expenditure by tourist. Japan is one of the Asian country with lots of beautiful places with attracting culture, beverage, food and other things. We use forecasting model. We find up 91 percentage of forecasting was accuracy. Application of rough set is very suitable and new for forecasting it. Tourist expenditure in any country is so important.