Calculates various ARMA-GARCH models for a specified returns time series. Output: model matrix with tests on model residuals and AIC BIC criteria

1、根据财务因子选择10只股票，具体财务因子不限；2、运用投资组合理论建立投资组合，计算出每只股票的权重（协方差、相关系数）；3、将构建的投资组合收益率与指数对比，计算看是否存在超阿尔法收益；4、将构建的投资组合收益率序列建立模型（ARMA、GARCH等），并预测未来一周、一月的收益率；(1, according to the financial factor selection of 10 stocks, the specific financial factor is not limited