build_polynomial.py
b96a75e22936master

build_polynomial.py
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			# -- coding: utf-8 --
			"""implement a polynomial basis function."""

			import numpy as np


			def build_poly(x, degree):
			"""polynomial basis functions for input data x, for j=0 up to j=degree."""
			# ***************************************************
			# INSERT YOUR CODE HERE
			# polynomial basis function: TODO
			# this function should return the matrix formed
			# by applying the polynomial basis to the input data
			# ***************************************************
			sigma = np.zeros((degree+1,len(x)))
			tx = np.array(x)
			for deg in range(degree+1):
			sigma[deg] = tx**deg

			return sigma