A new method of combination forecast is proposed in this paper. Determining the weighting coefficient in a combination forecast model is translated into estimating significance of the attributes among rough set. Knowledge entropy is computed and a computation approach of weighting coefficient in a combination forecast model is showed on the basis of establishing a relation data model about combination forecast. The proposed approach overcomes the subjectivity of traditional methods, avoids solving linear or nonlinear extremum problem, automatically collects predicting model, is simple in calculation and makes combination forecast more objective. The validity of the proposed approach is verified with a case.
Combining with international emerging theory of soft set,this paper proposes a synthetically evaluating method for business competitive capacity based on soft set.The proposed approach overcomes the deficiency of traditional methods,deal with the problems which mixed all kinds of uncertainty.It has no use for constructing an analytic mathematical model and defining the notion of the exact solution of this model,it entirely depends on drive of data to evaluate and analyze.The algorithm is very convenient and easily applicable in practice.The validity and feasibility of the proposed approach is verified with a case.
