One-stop for Geoscience Knowledge Graph

UTF ontology is a unified time framework in geoscience systems.

In general, it consists of four parts: a root class to link all kinds of relevant time elements about the object, some general classes, such as time type, time reference, time relation, and et al., several description attributes in each class, for example, “Point_time” class has the attributes of point_id, point_value, point_unit, point_uncertainty, and et al., and some attribute interfaces to link to external ontologies, such as the reference_system attribute can link to existing geological time ontologies. In specific, there are five typical features of the UTF structure to achieve unified temporal information expression accurately and efficiently.