hoburgabbeel_ex6_3.py

"Example 6.3 from Hoburg/Abbeel GPfit paper"
import numpy as np
from numpy.random import seed, random_sample
from gpfit.fit import fit

seed(33404)

Vdd = (
    random_sample(
        1000,
    )
    + 1
)
Vth = (
    0.2
    * random_sample(
        1000,
    )
    + 0.2
)
P = Vdd ** 2 + 30 * Vdd * np.exp(-(Vth - 0.06 * Vdd) / 0.039)
u = np.vstack((Vdd, Vth))
x = np.log(u)
y = np.log(P)
K = 4

_, errorMA = fit(x, y, K, "MA")
_, errorSMA = fit(x, y, K, "SMA")
_, errorISMA = fit(x, y, K, "ISMA")

print("MA RMS Error: %.5g" % errorMA)
print("SMA RMS Error: %.5g" % errorSMA)
print("ISMA RMS Error: %.5g" % errorISMA)