garchBNC¹⁴⁴⁶⁶⁴⁺³ 基本例句 GARCH模型 Then the movement feature of the market is analyzed with the GARCH model, and whether the market return follows non-linear and leptokurtic heavy tail feature is validated. 文章还采用 GARCH模型对市场的运行特征做了分析，对市场收益率是否服从非线性和尖峰胖尾的特征进行验证。 cnki