...Zhi Cheng Jiang; Yong Wei Purpose According to the fact that the single function transformation which can both reduce the class ratio dispersion and keep the relative error no enlargement after the inverse transformation does not exist, this paper provides the separable binary function...

...Cheng Zhi Jiang; Yong Wei; Jun Ling Purpose – The purpose of this paper is to discuss the necessary condition of the relative error between continuous function transformation after inverse transformation and original sequence is not larger than the relative error between transformed sequence...