Efficiency of Weighted Harmonic Means Combination Forecasting Method Based on Vectorial Angle Cosine
Huayou Chen · Shuxue de shijian yu renshi · 2008
Weighted harmonic means combination forecasting is a kind of nonlinear combination forecasting method.Based on vectorial angle cosine,a Weighted harmonic means combination forecasting model is proposed in this paper.Some new concepts are defined for the model,which are superior combination forecasting,dominant forecasting method,combination forecasting redundant degree etc.The sufficient conditions of existence of noninferior combination forecasting and superior combination forecasting are discussed.In the meantime how to judge redundant forecasting method is also given in a theorem.