Trend analysis of 2011 China's car sales volume and carbon emissions based on rough set theory

With the fast growth of Chinese economy and the society's progress, the environment issues in China begin to attract people's attention more and more. After United Nations Climate Change Conference in Copenhagen, Chinese begin to concern about the "carbon emissions" and the low carbon lifestyle. According to the expert's forecast, China's automobile industry's carbon emissions possibly occupy about 5% of total emissions. And the automobile industry of our country is developing quickly, its carbon emissions rate in total emissions will be more and more. In this paper, it's demonstrated that Rough Set Theory can find some potential knowledge by data analysis. Based on Rough Set Theory and the demand of prediction of car sales volume, a procedure of car sales forecast is proposed. Then automobile carbon emissions can be forecasted with obtained rules set and calculation of carbon emissions. The prediction is expected to have some effect on the establishment of Chinese twelfth five-year plan, especially the policy about the carbon emissions.