def cosion_simi(self, vec):
    simi = cosine_similarity(np.array([vec]), np.array(self.cluster_center_vec))
    max_idx = np.argmax(simi, arixs=1)[0]
    max_val = simi[0][max_idx]
    return (max_val, max_idx)
def cosion_simi(self, vec):
    simi = cosine_similarity(np.array([vec]), np.array(self.cluster_center_vec))
    max_idx = np.argmax(simi, arixs=1)[0]
    max_val = simi[0][max_idx]
    return (max_val, max_idx)