中文摘要：

随着电子商务的不断发展，通过网络进行商品交易的人在不断增多。拍卖、竞标等交易方式近年来得到了迅速发展，Internet和WWW也已成为零售业的非常重要的渠道。但在这些电子化的交易过程中。买、卖双方通常还是要亲自参与交易过程，商品交易的自动化程度还远远不够。文章对目前具有议价功能的典型系统进行了简单回顾，并根据目前研究中所存在的问题，提出了一个基于混合报价策略的自动议价系统模型。文中还给出了混合报价策略的定义及其实验测试结果。

英文摘要：

Going with the development of electronic commerce,the numbers of people buying,selling,and performing transactions on the web are increasing at a phenomenal pace.Some trade types,such as auction,bid,and so on,are developing rapidly.Internet and WWW have become important channels for retail commerce.But electronic purchases are still largely non-automated.A human buyer or seller is still responsible for some stages.Several typical agents which can support negotiation are briefly reviewed here.And an automated bargaining system based on mixed offering tactics is proposed to solve the problem existing in the current research.At the same time,a definition for the mixed offering tactics and its experiment result are proposed,too.