关键词: 聚类挖掘, 隐私保护, 几何数据转换, 平面反射

Abstract: In order to solve the problem of privacy protection in cluster mining, in view of the low privacy of the  existing methods of geometric data transformation, this paper presents a method of plane reflection based geometric data transformation. A straight line in the plane is chosen arbitrarily and all attributes are paired to form points on the plane. The symmetry point of each point is computed. The computed result is the transformed data. Proved by the experiments, this method is simple and has a higher degree of privacy protection than translation, scaling, rotation and other geometric data transformation methods.

Key words: cluster mining, privacy protection, geometric data transformation, plane reflection