+ x.loco.mle <- summarize.estimator(df, 'loco.mle', 'x')
+
+ z.loco.amelia <- summarize.estimator(df, 'amelia.full', 'z')
+ x.loco.amelia <- summarize.estimator(df, 'amelia.full', 'x')
+
+ z.loco.zhang <- summarize.estimator(df, 'zhang', 'z')
+ x.loco.zhang <- summarize.estimator(df, 'zhang', 'x')
+
+
+ z.loco.gmm <- summarize.estimator(df, 'gmm', 'z')
+ x.loco.gmm <- summarize.estimator(df, 'gmm', 'x')
+
+
+
+