index of seasonal variation

基本解释

The seasonal variation index (SVI) is used to fit the seasonal trend of power load.
季节变动指数（SVI）用来拟合电力负荷的季节性趋势。
And the variation of the night-time outpatient quantities was studied with seasonal-index.
探讨了夜间门诊量的季节指数变动规律；
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This paper proposed gray seasonal variation index model GSVI (1,1) for forecasting of electricity demand in order to improve the forecasting accuracy of short-term electricity demand.
为了提高短期用电量的预测精度，提出了用电量预测的灰色季节变动指数模型——GSVI（1，1）模型。