此软件包应由软件包开发人员用作后端。 它允许开发人员在其程序包定义的fit方法中添加::CovarianceEstimator参数。 有关FixedEffectModels ,请参见FixedEffectModels 。
 此程序包中定义的每种类型都定义以下方法:
 # return a vector indicating non-missing observations for standard errors
completecases (table, :: CovarianceEstimator ) = trues ( size (df, 1 ))
# materialize a CovarianceEstimator by using the data needed to compute the standard errors
materialize (table, v :: Cov
                                    
                                    
                                         2022-07-17 11:17:50 
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                                                Julia
                                     
                                        
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