该工具箱涉及推荐系统的相关内容，推荐系统是利用电子商务网站向客户提供商品信息和建议，帮助用户决定应该购买什么产品，模拟销售人员帮助客户完成购买过程。个性化推荐是根据用户的兴趣特点和购买行为，向用户推荐用户感兴趣的信息和商品。(The toolbox is related to the recommendation system. The recommendation system is to use the e-commerce website to provide product information and advice to the customer, to help the user decide which product to purchase and to simulate the sales staff to assist the customer in completing the purchase process. Personalized recommendation is based on the user's interest characteristics and purchase behavior, recommend to the user information and products of interest to the user..)