ATTac-2000: An adaptive autonomous bidding agent

The First Trading Agent Competition (TAC) was held from June 22nd to July 8 th, 2000. TAC was designed to create a benchmark problem in the complex dom ain of e-marketplaces and to motivate researchers to apply unique approache s to a common task. This article describes ATTac-2000, the first-place fini sher in TAC. ATTac-2000 uses a principled bidding strategy that includes se veral elements of adaptivity. In addition to the success at the competition , isolated empirical results are presented indicating the robustness and ef fectiveness of ATTac-2000's adaptive strategy.