According to this DIP, users are given the ability to manage individually as well as to crowdsource concepts.
A concept is defined as a collection of nodes and edges, formed from a single class node, taking all class threads emanating from that node (all nodes and edges contained within those threads). (Is property tree added to the definition of the concept?)
basic types of nodes in a concept: JSONSchema, wordType, set, superset, instance
basic types of relationships: subsetOf, JSONSchemaFor, specificInstanceOf
the Loki Principle = class thread rule