2022 Volume 2022 Issue SWO-056 Pages 01-
In the IT society, we need a good knowledge infrastructure to fill the gap between computer-generated information and human activities. In this paper, we discuss Public Knowledge Graph that works as such the knowledge infrastructure for our society. First, we introduce what kind of social tasks are expected to solve with the knowledge infrastructure, then we show a list of requirements for public knowledge graph for this purpose, such as wide coverage, variety, dynamics, integrity, consistency, fairness, reliability and robustness. We, then, discuss how to proceed to build public knowledge graph, i.e., exploration of knowledge sources, establishment of solid infrastructure, research on inference, and applications.