Diatance between Feature Vectors

reccomend.py

# Inf2B

Guardian = (6,4,1,6,6,2,4)
Times = (8,4,4,6,6,6,8)
Telegraph = (10,4,6,6,6,2,9)
Independent = (8,4,3,4,3,3,6)

def dist(vec1, vec2):
	vectors = zip(vec1, vec2)
	total = 0
	for (e1,e2) in vectors:
		total += (e1 - e2) ** 2
	
	return total ** 0.5

def m(vector):
	return ((1/float(len(vector))) * sum(vector))

def s(vector):
	n = float(len(vector))
	
	m_value = m(vector)
	total = 0

	for element in vector:
		total += (element - m_value) ** 2

	return ((1/(n-1)) * total) ** 0.5

def p(vec1, vec2):
	n = float(len(vec1))
	m_x = m(vec1)
	m_y = m(vec2)

	total = 0

	for (ele1, ele2) in zip(vec1, vec2):
		total += ((ele1 - m_x) / s(vec1)) * ((ele2 - m_y) / s(vec2))

	return (1/(n-1)) * total