import numpy as np def cos_sim(v1, v2): return np.dot(v1, v2) / (np.linalg.norm(v1) * np.linalg.norm(v2)) X = np.array([0.789, 0.515, 0.335,0]) Y = np.array([0.832, 0.555,0,0]) # cos(X,Y) = (0.789×0.832)+(0.515×0.555)+(0.335×0)+(0×0)≒0.942 print(cos_sim(X, Y))