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. Author manuscript; available in PMC: 2020 Sep 18.
Published in final edited form as: J Am Stat Assoc. 2019 Mar 9;114(528):1726–1739. doi: 10.1080/01621459.2018.1520115

Table 3:

Estimation error for the first type covariance matrix with ρ = 0.5.

p Lasso-SIR DT-SIR M-Lasso Lasso
X 100 0.22 ( 0.03 ) 0.66 ( 0.05 ) 0.26 ( 0.03 ) 0.2 ( 0.03 )
1000 0.26 ( 0.04 ) 1.21 ( 0.03 ) 0.52 ( 0.03 ) 0.28 ( 0.03 )
2000 0.27 ( 0.03 ) 1.33 ( 0.02 ) 0.59 ( 0.02 ) 0.29 ( 0.04 )
4000 0.28 ( 0.04 ) 1.39 ( 0.02 ) 0.65 ( 0.03 ) 0.3 ( 0.04 )
XI 100 0.32 ( 0.07 ) 0.83 ( 0.07 ) 0.6 ( 0.17 ) 0.33 ( 0.07 )
1000 0.43 ( 0.1 ) 1.32 ( 0.02 ) 1.07 ( 0.05 ) 0.45 ( 0.09 )
2000 0.45 ( 0.09 ) 1.38 ( 0.01 ) 1.15 ( 0.04 ) 0.46 ( 0.09 )
4000 0.49 ( 0.12 ) 1.41 ( 0.01 ) 1.2 ( 0.05 ) 0.51 ( 0.12 )
XII 100 0.24 ( 0.03 ) 0.63 ( 0.05 ) 0.52 ( 0.35 ) 0.22 ( 0.03 )
1000 0.33 ( 0.03 ) 1.18 ( 0.04 ) 0.53 ( 0.03 ) 0.32 ( 0.03 )
2000 0.37 ( 0.05 ) 1.3 ( 0.04 ) 0.62 ( 0.03 ) 0.35 ( 0.03 )
4000 0.4 ( 0.04 ) 1.38 ( 0.03 ) 0.68 ( 0.03 ) 0.39 ( 0.04 )
XIII 100 0.38 ( 0.06 ) 1.09 ( 0.06 ) 0.61 ( 0.05 ) 1.07 ( 0.02 )
1000 0.39 ( 0.07 ) 1.79 ( 0.02 ) 1.12 ( 0.05 ) 1.08 ( 0.02 )
2000 0.38 ( 0.07 ) 1.91 ( 0.02 ) 1.24 ( 0.04 ) 1.09 ( 0.03 )
4000 0.42 ( 0.07 ) 1.98 ( 0.01 ) 1.32 ( 0.03 ) 1.1 ( 0.03 )