def sse(w):
w = np.array(w)
order = w.shape[0]
X, Y = bishopCurveData()
ss = 0
for i in range(len(Y)):
approx = 0
for j in range(order):
approx += w[j] * (X[i]**j)
ss += (Y[i] - approx) ** 2
return ss
def sse(w):
X, Y = bishopCurveData()
sse = 0
for i in range(len(Y)):
sse += (Y[i] - w) ** 2
return sse
#!/usr/bin/env python
from hw1.homework1 import bishopCurveData
__author__ = 'Shaun Rong'
__version__ = '0.1'
__maintainer__ = 'Shaun Rong'
__email__ = '*****@*****.**'
def gd(f, x, dx):
return (f(x + dx) - f(x - dx)) / (2 * dx)
def sse(w):
X, Y = bishopCurveData()
sse = 0
for i in range(len(Y)):
sse += (Y[i] - w) ** 2
return sse
if __name__ == '__main__':
print gd(sse, 0, 0.00001)
X, Y = bishopCurveData()
v = 0
for y in Y:
v += 2 * y
print v
