Table 4 List of basis functions of the B-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 | 0.231567 |
BF1 | Max(0, SPEED-7.11) | –0.000134 |
BF2 | Max(0, SPEED-11.42) | 0.000514 |
BF3 | Max(0, SPEED-20.16) | 0.004671 |
BF4 | Max(0, SPEED-26.11) | 0.051411 |
BF5 | Max(0, ACCEL-1.23) | 0.009671 |
BF6 | Max(0, ACCEL-5.78) | 0.032143 |
BF7 | Max(0, AMBT -22.14) | 0.000221 |
BF8 | Max(0, AMBT -23.63) | 0.003133 |
BF9 | Max(0, AMBT -25.31) | 0.028912 |
BF10 | Max(0, LOAD -14.41) | 0.012761 |
BF11 | Max(0, LOAD -44.23) | 0.041671 |
BF12 | Max(0, Power -15.72) | 0.015116 |
BF13 | Max(0, Power -21.43) | 0.021551 |