AI 中文总结
该研究刻画了理性社会学习中确保共识的通信网络，提出伪互惠性质为共识的充要条件，发现无需成对互惠，一条双向链路即可实现大群体下的共识。
AI 中文摘要
我们刻画了在确定原则下理性社会学习中确保共识的通信网络。一个网络确保共识当且仅当它是伪互惠的，该性质下个体间的互惠可能失效，但在更粗的群体层面成立。先前研究假设信息交换是双向的，然而这种成对互惠基本不必要。我们表明，无论群体规模多大，一条双向链路就足够。
英文摘要
We characterize the communication networks that ensure consensus in rational social learning under the sure-thing principle. A network ensures consensus if and only if it is pseudo-reciprocal, a property under which reciprocity may fail between individuals but holds at a coarser group level. Prior work has assumed message exchange to be bidirectional, yet such pairwise reciprocity proves largely dispensable. We show that a single bidirectional link can suffice, however large the population.
Comments23 pages, 2 figures
