Abstract: In the online group-buying, how to realize the optimization of commodity transaction with considerations of the benefits of sellers, consumers and the electronic intermediary is a noteworthy research issue. In this paper, for the transaction problem based on the electronic intermediary which trades the online group-buying commodity, based on the information of the quantity range and the quantity discount determined by sellers and electronic intermediary and the quoted prices and the reservation prices respectively determined by customers and sellers, a multi-objective optimization model is established considering the profit maximization objective of sellers, consumers and the electronic intermediary simultaneously. Further, the multi-objective optimization model is transformed to the single-objective one, and the Partheno-Genetic Algorithm is given to solve the model. Finally, a numerical example is given to illustrate the validity of the proposed model and the algorithm.

Key words: group-buying, electronic intermediary, commodity transaction, optimization model, genetic algorithm

摘要： 在网络团购环境下,如何考虑顾客、商家和电子中介三方主体的利益并实现商品交易最优化,这是一个值得关注的研究问题。本文针对基于电子中介的网络团购商品交易问题,依据商家与电子中介事先商定的团购商品的交易数量区间、交易数量折扣以及顾客和商家分别提交的商品的报价和保留价,在考虑顾客、商家和电子中介三方利益最大化的前提下,构建了多目标商品交易优化模型;进一步地,将多目标优化模型转化为单目标优化模型,并给出了求解优化模型的遗传算法。最后,通过一个算例说明了本文构建的模型及其求解算法的可行性和有效性。

关键词: 网络团购, 电子中介, 商品交易, 优化模型, 遗传算法