In order to further speed the algorithm, a rapid sub-optimal loading algorithm is also presented based on analyzing the bit loss superior limit of the method.

Two mathematic methods are presented to prove that 2-parameter hyperbolic model and exponential model are the superior limit and lower limit of the corresponding new 3-parameter model respectively.

Through set sequence is resolved into finite mutually disjunct subsets, the new method to solve the limit superior and limit inferior of set sequence is give.