1、 13 届 分 类 号 : 单位代码 :10452 毕业论文 (设计) 优化理论在网购中的应用 姓 名 占 沙 学 号 200901010142 年 级 2009 专 业 数学与应用数学 系 (院) 理学院 指导教师 张德菊 2011 年 11 月 30 日临沂 大学 2013 届本科毕业论文 (设计) 摘 要 本文主要通过对最优网购问题中所提供的甲 、 乙 、 丙 和 丁四人网购总订单以及三个购物网站 A、 B 和 C 相关的库存量 、 商品定价 和 优惠活动等方面进行探讨研究 ,将问题定位为消费者网购时应付的总费用最小化问题进行建模 ,按照题目要求分两问进行解答 . 问题一:本文根据甲 、
2、 乙 、 丙 和 丁的网购总订单分析发现有四人网购时购买了同 一编号商品的情况 , 所以需要考虑库存量与需求量的关系 .因此运用最优规划理论建立了同时适用于四人的最优网购方案的模型 ,运用 Lingo 软件编程求解可得出四人采购应付的总费用分别为 659.81 元 、 843.62 元 、 783.85 元和 961.18 元 . 购物具体方案整理后如 附录中 表 1、 表 2、 表 3 和 表 4 所示 . 针对 问题一 ,本文就实际生活中可能出现的多人购买同一商品 的情况 ,在模型 1 的基础上进一步研究 ,同样采用最优规划理论建立适用于多人购买同一商品的综合模型 2. 模型 2 相当于委
3、托其中一人购买所有的商品 ,然后 几个人按自己购物数量占 的比例分担邮费 ,从而减少 应付费用 得到最优化方案 . 经 Lingo 软件编程求解 可以得出总体最优方案 . 具体方案如 附录中 表 5 所示 . 模型 2 与模型 1 相比更省钱 ,不过前提条件是网购者相互认识且委托其中一人将所有物品全部购买 . 问题二:本文根据相关调查和研究 发现 每个网站都有自己的促销方式 . 有的商场使用打折的方式进行促销 ,有的网站会推出双重或多重促销方式 ,在打折的同时又推出商品 货额达到一定数额免运费等优惠 . 因此本文考虑在问题一打折的基础上 ,再添加最新优惠活动因素 . 在模型 1 的基础上添加最
4、新优惠活动得到模型 3,运用 Lingo 软件编程求解可知甲 、 乙 、 丙 和 丁的网购应付费用总额分别为 654.81 元 、 828.62 元 、 778.85 元和951.18 元 . 具体购物方案如表 6、 表 7、 表 8 和表 9 所示 . 关键词 :网络购物;优化理论;最优购物方案 ; 0-1 变量 临沂 大学 2013 届本科毕业论文 (设计) ABSTRACT This article mainly through to the best online questions provided in the A B C d four total orders online an
5、d A, B and C three shopping website of relevant inventory goods pricing further study favourable activity, etc, positioning problem when shopping for consumer to cope with the total cost minimization problem of modeling. Question one: according to a Yi Bing Ding online when there are four people in
6、total order analysis found that online shopping is to buy the same number of goods, so need to think about inventory and demand relationship. So by using the optimal planning theory is suitable for four people at the same time the optimal online scheme model, using the Lingo software programming to
7、solve can be concluded that four people purchasing to deal with the total cost of 659.81 yuan, 843.62 yuan, 783.85 yuan and 961.18 yuan. The plans after finishing shopping such as table 1, table 2 and table 3 and table 4. About question one, the real people at the same time in your life are likely t
8、o buy the same goods and consumers know, or many people in the same shop to buy goods. And online shopping if a bought many people to buy the same goods, the postage is calculate according to individual orders. That is to entrust one person to buy all the goods, the last few people according to thei
9、r shopping accounted for the proportion of share the postage, so as to reduce costs, and optimization solution is obtained. According to the situation on the basis of model 1 further study, the optimal planning theory is adopted to establish the same applies to people buy the same goods, a comprehen
10、sive model 2 by Lingo software programming method can obtain the overall optimal solution. The specific scheme as shown in table 5. Question two: in this paper, according to the investigation and study found that each website has its own way of sales promotion. Some stores use a discount promotion i
11、n the form of double or multiple promotions, some website will launch on sale at the same time introduce commodity goods amount reaches a certain amount of free shipping offers. So this article consider the question, on the basis of a discount, to add the latest preferential activities. On the basis
12、 of model 1 to add the latest preferential activities for model 3, using the Lingo software programming solution shows a Yi Bing Ding online deal with total costs were 654.81 yuan, 828.62 yuan, 778.85 yuan and 951.18 yuan. Concrete shopping plan in table 6 as shown in table 7 table 8 and table 9. Key words: online shopping; Optimization theory; The optimal shopping plan; 0-1variable