This book constitutes the thoroughly refereed post-proceedings of the joint International Workshops on Trading Agent Design and Analysis, TADA 2006, and on Agent Mediated Electronic Commerce, AMEC VIII 2006, held in Hakodate, Japan, in May 2006 as an associated event of AAMAS 2006, the 5th International Joint Conference on Autonomous Agents and Multiagent Systems.

The 17 revised full papers presented were carefully selected from the presentations made at the workshop and include papers from the annual TAC tournament whose purpose is to stimulate research in trading agents and market mechanisms by providing a platform for agents competing in well-defined market scenarios. The papers address a mix of both theoretical and practical issues in trading agent design and technologies, theoretical and empirical evaluation of strategies in complex trading scenarios as well as mechanism design. Also covered are issues of agent-mediated electronic commerce ranging from the design of electronic marketplaces and efficient protocols to behavioral aspects of agents operating in such environments.

本书是2006年5月在日本函馆举行的“贸易代理设计与分析联合国际研讨会”（TADA 2006）和“代理介导电子商务联合国际研讨会”（AMEC VIII 2006）的会后审议记录，是美国原子能机构协会（AAMAS）2006年的相关活动，第五届国际自主智能体和多智能体系统联合会议。
所提交的17份经修订的完整论文是从研讨会上所作的介绍中精心挑选的，其中包括年度TAC锦标赛的论文，其目的是通过为在明确的市场情景中竞争的代理人提供一个平台，促进对交易代理人和市场机制的研究。论文讨论了交易代理设计和技术、复杂交易场景下策略的理论和实证评估以及机制设计中的理论和实践问题。还涵盖了代理介导的电子商务问题，从电子市场和有效协议的设计到代理在这种环境中运行的行为方面。