def findSimNeighbor_list(person, k):
scores = [
(sim_socre_pearson(person, other_person), other_person)
for other_person in dataset.keys()
if other_person != person
] # 求相似性列表
# 列表排序
scores.sort()
scores.reverse()
return scores[0:k]
def findSimNeighbor(person, k):
neighbours_sim = {}
for item in dataset.keys():
if item != person:
neighbours_sim[item] = sim_socre_pearson(person, item)
# 字典排序
sorted_neighbours = sorted(neighbours_sim.iteritems(), key=lambda asd: asd[1], reverse=True)
# 但是字典是无序的，如何将结果传出
neighbours_List = list(sorted_neighbours)
return neighbours_List[0:k]