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应用GARCH模型理论分析某医院2003年至2012年月门诊量变化趋势,并建立AR(1)-IGARCH(2,1)模型,比较2003年至2012年月门诊实测值和模型预测值,其平均相对误差为0.057%,然后应用AR(1)-IGARCH(2,1)模型预测了2013年和2014年该院的月门诊量,比较2013年1月至6月月门诊量实测值和模型预测值,其平均相对误差为0.67%。分析结果表明GARCH模型能很好地追踪门诊量变化趋势。
The GARCH model was used to analyze the trend of monthly outpatient volume in a hospital from 2003 to 2012. AR (1) -IGARCH (2,1) model was established to compare the monthly outpatient and forecast values between 2003 and 2012. The average The relative error was 0.057%, and then the AR (1) -IGARCH (2,1) model was used to predict the monthly outpatient volume of the hospital in 2013 and 2014. The monthly outpatient measurements and model predictions from January to June in 2013 were compared Value, the average relative error of 0.67%. The results of the analysis show that the GARCH model can well track the changing trend of the outpatient volume.