The stock market has been in unpredictable, view of the dynamic forecast and investment prospect value quantitative problem, this paper plans to forward segment regression method, with one year for experimental period, quarter as time window, dynamically select window period attribute factor, next quarter, through entropy right Topsis method sorting value, rating stock.The is divided into 5 gra...

managers always consider the precise estimation of sediments in watersheds due to various conditions, such assoil and water resources management, construction, infrastructure and economical and social issues. in this condition,an optimized determination of sediment rating equation (typical method until now for sediment yield estimation) isessential to investigate sediment yield in rivers. in th...