Table 3 List of basis functions of the MARS and their coefficients for dynamometer testing
From: Multivariate adaptive regression splines models for vehicular emission prediction
Beta | Basis | Value |
|---|---|---|
factor | function | Â |
BF0 | Â | 0.313578 |
BF1 | Max(0, SPEED-6.43) | –0.000172 |
BF2 | Max(0, SPEED-9.36) | 0.000625 |
BF3 | Max(0, SPEED-18.37) | 0.005751 |
BF4 | Max(0, SPEED-25.14) | 0.063521 |
BF5 | Max(0, ACCEL-1.12) | 0.009433 |
BF6 | Max(0, ACCEL-4.24) | 0.056731 |
BF7 | Max(0, ACCEL-6.24) | 0.066312 |
BF8 | Max(0, AMBT -21.54) | 0.000321 |
BF9 | Max(0, AMBT -23.15) | 0.004433 |
BF10 | Max(0, AMBT -24.62) | 0.037215 |
BF11 | Max(0, LOAD -15.67) | 0.013211 |
BF12 | Max(0, LOAD -45.67) | 0.053412 |
BF13 | Max(0, Power -13.76) | 0.016813 |
BF14 | Max(0, Power -20.64) | 0.021213 |