This volume contains ten thoroughly refereed and revised papers detailing recent advances in
research on designing trading agents and mechanisms for agent-mediated e-commerce. They were
originally presented at the 13th International Workshop on Agent-Mediated Electronic Commerce
(AMEC 2011) collocated with AAMAS 2011 in Taipei Taiwan or at the 2011 Workshop on Trading
Agent Design and Analysis (TADA 2011) collocated with IJCAI 2011 in Barcelona Spain. The
papers presented at these two workshops illustrate both the depth and broad range of research
topics in this field. They range from providing solutions to open theoretical problems in
online scheduling and bargaining under uncertainty to designing bidding agents in a wide area
of application areas such as electronic commerce supply chain management or keyword
advertising to designing agents that can successfully replicate actual human behaviors in
realistic games.
