haku: @indexterm SOCIAL FORECASTING / yhteensä: 61
viite: 21 / 61
| Tekijä: | Tingyan, X. |
| Otsikko: | A combined growth model for trend forecasts. |
| Lehti: | Technological Forecasting and Social Change
1990 : SEP, VOL. 38:2, p. 175-186 |
| Asiasana: | MATHEMATICAL MODELS ECONOMIC FORECASTING SOCIAL FORECASTING |
| Kieli: | eng |
| Tiivistelmä: | A general mathematical model for trend forecasts by combining some basic substitution models in a new way is presented. The model can cover the exponential, logistic, Gompertz, Von Bertalanffy and mod. NSRL models. Moreover, it can accomodate some time patterns differing from the existing substitution models. First, the derivation and the associated properties of the combined model are presented. Next, the method of estimating the model parameters is given. Lastly, to illustrate the effectiveness of the model, data from electrical power production in the United States and the population of China are analyzed. |
SCIMA