The Cognitive Workbench stores knowledge in the form of entities and relations between them. At this basic level of analysis, there are facts which are observable in the user’s data, e.g. in emails or calendar entries, in news stories, in scientific papers or patents. or any other kind of user-generated record.
These facts are extracted into entity types, such as person, place, time, measurement, disease, chemical compound, etc.
Any instance of Entity can be stored as a graph node in the Cognitive Workbench Graph Database. The graph supports arbitrary type hierarchy extensions as necessary to accommodate new data types and program logic.