本文整理汇总了Python中helper.Helper.cosine_similarity方法的典型用法代码示例。如果您正苦于以下问题：Python Helper.cosine_similarity方法的具体用法？Python Helper.cosine_similarity怎么用？Python Helper.cosine_similarity使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类helper.Helper的用法示例。
在下文中一共展示了Helper.cosine_similarity方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: calculate_user_top_5
# 需要导入模块: from helper import Helper [as 别名]
# 或者: from helper.Helper import cosine_similarity [as 别名]
def calculate_user_top_5(user,all_apps,user_download_list):
# ways is to calculate all_apps similarity with the user_download_list
app_similarity={}
for app in all_apps:
if app in user_download_list:
continue
else:
#calculate the app similarity with the user download lists
similarity = Helper.cosine_similarity([app],user_download_list)
if app_similarity.has_key(app):
app_similarity[app] = app_similarity[app] + similarity
else:
app_similarity[app] = similarity
#get the top 5
top_five_apps=[]
sorted_apps =sorted(app_similarity.items(),key=operator.itemgetter(1),reverse=True)
i=0
while i<5:
#print("top 10 apps "+sorted_apps[i][0]) ## uncommnet for test one app top 10
top_five_apps.append(sorted_apps[i][0])
i+=1
DataService.update_user_info({'user_id':user},{'$set':{"top_5_app":top_five_apps}})示例2: calculate_app_top_10
# 需要导入模块: from helper import Helper [as 别名]
# 或者: from helper.Helper import cosine_similarity [as 别名]
def calculate_app_top_10(app,user_download_history):
#get app with all the lists similarity
app_similarity ={}
for apps in user_download_history:
similarity = Helper.cosine_similarity([app],apps)
for listapp in apps:
if listapp is app:
continue
elif app_similarity.has_key(listapp):
app_similarity[listapp] = app_similarity[listapp] + similarity
else:
app_similarity[listapp] = similarity
if not app_similarity.has_key(app):
return
#remove itself
#app_similarity.pop(app)
#calculate top10 reverse= true means from bigger to smaller
#items() and operator.itemgetter(1) means get list of tuples with key-value pair
sorted_apps =sorted(app_similarity.items(),key=operator.itemgetter(1),reverse=True)
top_ten_apps=[]
i=0
while i<10:
#print("top 10 apps "+sorted_apps[i][0]) ## uncommnet for test one app top 10
top_ten_apps.append(sorted_apps[i][0])
i+=1