Design and implementation of commerce data mining system based on rough set theory

On the basis of analyzing characters of commercial data and rough set, this paper proposes a data mining system using rough set, and presents detailed design and implementation. The novel commercial data mining system presented in this paper include three parts: data preparation, data preprocessing, mining and evaluation. During the design and implementation of three levels, this paper presents several novel algorithms using rough set. These algorithms can accelerate data mining process and improve quality of data mining. Finally, the paper tests the result of research and algorithm through an instance.