Contagion through learning
研究玩家在完全信息博弈中通过外推过去类似情境来学习,可能导致行动在不同博弈间传染,即使只从收益相近的博弈中学习,传染也会产生唯一长期结果,与全局博弈中的传染相关但结果不同。
We study learning in a large class of complete information normal form games. Players continually face new strategic situations and must form beliefs by extrapolation from similar past situations. We characterize the long-run outcomes of learning in terms of iterated dominance in a related incomplete information game with subjective priors. The use of extrapolations in learning may generate contagion of actions across games even if players learn only from games with payoffs very close to the current ones. Contagion may lead to unique long-run outcomes where multiplicity would occur if players learned through repeatedly playing the same game. The process of contagion through learning is formally related to contagion in global games, although the outcomes generally differ.