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Received: October 12, 2020
Revised: December 29, 2020
Accept: January 6, 2021
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H. Matsui
Table 1: Results on 100 repetitions in simulation studies for n = 50.
σe = 0.05, δ = 0.25
MSE
X1
X2
X3
X4
X5
MLE
2.97 (0.14)
1.00 1.00 1.00 1.00 1.00
SCAD
3.02 (0.18) 1.00 × 10−2 0.91 1.00 1.00 0.26 0.31
Elastic net 11.12 (0.95) 3.13 × 10−5 0.04 1.00 1.00 0.00 0.00
MCP
3.16 (0.30) 6.44 × 10−3 0.60 1.00 1.00 0.43 0.44
σe = 0.1, δ = 0.25
MSE
X1
X2
X3
X4
X5
MLE
3.18 (0.14)
1.00 1.00 1.00 1.00 1.00
SCAD
3.19 (0.22) 1.02 × 10−2 0.92 1.00 1.00 0.43 0.43
Elastic net 11.15 (1.14) 3.63 × 10−5 0.02 1.00 1.00 0.02 0.02
MCP
3.48 (0.34) 8.22 × 10−3 0.42 1.00 1.00 0.27 0.28
σe = 0.05, δ = 0.50
X2
X3
X4
X5
MSE
X1
MLE
2.14 (0.12)
1.00 1.00 1.00 1.00 1.00
SCAD
2.07 (0.16) 6.31 × 10−3 0.96 1.00 1.00 0.37 0.45
Elastic net 11.16 (1.05) 3.16 × 10−5 0.07 1.00 1.00 0.00 0.03
MCP
2.07 (0.17) 3.09 × 10−3 0.94 1.00 1.00 0.27 0.33
σe = 0.1, δ = 0.50
MSE
X1
X2
X3
X4
X5
MLE
2.51 (0.15)
1.00 1.00 1.00 1.00 1.00
SCAD
2.55 (0.20) 4.46 × 10−3 0.89 1.00 1.00 0.44 0.45
Elastic net 11.10 (0.92) 3.06 × 10−5 0.03 1.00 1.00 0.00 0.01
MCP
2.43 (0.19) 3.56 × 10−2 0.43 1.00 1.00 0.29 0.27
σe = 0.05, δ = 0.75
MSE
X1
X2
X3
X4
X5
MLE
2.21 (0.13)
1.00 1.00 1.00 1.00 1.00
SCAD
2.19 (0.14) 5.01 × 10−3 1.00 1.00 1.00 0.88 0.86
Elastic net 11.15 (1.04) 2.76 × 10−5 0.04 1.00 1.00 0.02 0.05
MCP
2.16 (0.20) 3.29 × 10−3 0.95 1.00 1.00 0.52 0.50
σe = 0.1, δ = 0.75
MSE
X1
X2
X3
X4
X5
MLE
2.63 (0.18)
1.00 1.00 1.00 1.00 1.00
SCAD
2.63 (0.19) 3.30 × 10−3 0.85 1.00 1.00 0.82 0.81
Elastic net 10.89 (0.97) 3.16 × 10−5 0.06 1.00 1.00 0.03 0.01
MCP
2.52 (0.22) 3.26 × 10−3 0.99 1.00 1.00 0.62 0.58
Variable selection for historical functional linear model
Table 2: Results on 100 repetitions in simulation studies for
σe = 0.05, δ = 0.25
MSE
X1
X2
X3
MLE
3.03 (0.12)
1.00 1.00 1.00
SCAD
3.68 (0.20) 1.02 × 10−2 0.00 1.00 1.00
Elastic net 11.28 (0.64) 3.54 × 10−5 0.00 1.00 1.00
MCP
3.06 (0.12) 3.10 × 10−3 0.99 1.00 1.00
σe = 0.1, δ = 0.25
MSE
X1
X2
X3
MLE
3.12 (0.11)
1.00 1.00 1.00
SCAD
3.24 (0.25) 6.31 × 10−2 0.74 1.00 1.00
Elastic net 11.32 (0.65) 3.24 × 10−5 0.00 1.00 1.00
MCP
3.13 (0.13) 3.19 × 10−3 0.97 1.00 1.00
σe = 0.05, δ = 0.50
X2
X3
MSE
X1
MLE
1.97 (0.09)
1.00 1.00 1.00
SCAD
1.93 (0.12) 3.16 × 10−3 0.99 1.00 1.00
Elastic net 11.18 (0.69) 3.24 × 10−5 0.00 1.00 1.00
MCP
1.92 (0.10) 1.58 × 10−3 1.00 1.00 1.00
σe = 0.1, δ = 0.50
MSE
X1
X2
X3
MLE
2.18 (0.08)
1.00 1.00 1.00
SCAD
2.15 (0.09) 3.14 × 10−3 0.78 1.00 1.00
Elastic net 11.22 (0.72) 3.16 × 10−5 0.00 1.00 1.00
MCP
2.22 (0.18) 1.37 × 10−3 0.96 1.00 1.00
σe = 0.05, δ = 0.75
MSE
X1
X2
X3
MLE
1.99 (0.09)
1.00 1.00 1.00
SCAD
2.80 (1.83) 3.64 × 10−3 0.94 1.00 0.83
Elastic net 11.09 (0.64) 3.32 × 10−5 0.00 1.00 1.00
MCP
1.99 (0.09) 1.12 × 10−3 1.00 1.00 1.00
σe = 0.1, δ = 0.75
MSE
X1
X2
X3
MLE
2.17 (0.13)
1.00 1.00 1.00
SCAD
3.18 (2.13) 3.33 × 10−3 1.00 1.00 0.90
Elastic net 11.99 (0.52) 5.44 × 10−5 0.00 1.00 1.00
MCP
2.13 (0.09) 1.58 × 10−3 1.00 1.00 1.00
17
n = 100.
X4
1.00
0.00
0.00
0.17
X5
1.00
0.00
0.00
0.09
X4
1.00
0.09
0.00
0.22
X5
1.00
0.02
0.00
0.11
X4
1.00
0.29
0.00
0.23
X5
1.00
0.31
0.00
0.26
X4
1.00
0.73
0.00
0.23
X5
1.00
0.75
0.00
0.10
X4
1.00
0.33
0.00
0.92
X5
1.00
0.31
0.00
0.93
X4
1.00
0.60
0.00
1.00
X5
1.00
0.70
0.00
1.00
18
H. Matsui
Figure 3: Examples of typhoon data. Two plots in the top left (north latitude and east
longitude) are responses and the remaining data are predictors. The square brackets
indicates units of measurement, where ”nm” represents the nautical mile.
Figure 4: Functional data sets obtained by smoothing the data given in Figure 3.
Variable selection for historical functional linear model
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Figure 5: Estimated coefficient functions when the response is the north latitude (Y1 ).
Figure 6: Estimated coefficient functions when the response is the east longitude (Y2 ).
...