Microsoft Academic Graph (MAG) is a large heterogeneous graph containing entities such as authors, papers, journals, conferences and relations between them. Microsoft provides Academic Knowledge API for this contest. The Entity attributes are defined here. MAG是一个大型异构图，包含有作者、论文、期刊、会议以及他们之间的关系等实体信息。M$为这是比赛提供学术知识API。其中实体属性的定义如下： Participants are supposed to provide a REST service endpoint that can find all the 1-hop, 2-hop, and 3-hop graph paths connecting a given pair of entity identifiers in MAG. The given pair of entity identifiers could be [Id, Id], [Id, AA.AuId], [AA.