Knowledge Universe and graphs

SAG does more than return a linear result list. Graph views and Knowledge Universe expose the event-entity index as an explorable structure while preserving a path back to source text.

Objects in the graph

• Event: a semantically complete event or statement in one chunk.
• Entity: a person, organization, place, concept, or other indexing and expansion point.
• Association: membership between an event and an entity. Shared entities let multiple events form a local hyperedge at query time.

The graph is an observability view of the index, not final evidence. After opening event details, continue to the corresponding source chunk.

Source graph

In a knowledge-base detail page, switch from the list to the graph to inspect the current source's events, entities, and associations. This view helps evaluate extraction quality, discover highly connected entities, and understand a document's internal structure.

The 3D mode uses the same data with spatial navigation:

Knowledge Universe

Explore mode organizes the complete knowledge base as an interactive universe. Within a source, the mouse wheel moves the camera along an ordinal timeline. Drag and rotate control observation while zoom remains independent.

The timeline uses stable event ordinals instead of relying only on timestamps. Even when every event in a book shares the same time, you can browse in narrative order with paginated loading.

Effective workflows

• Start from one entity and discover related events.
• Review knowledge evolution in document or time order.
• Inspect a source's local structure beyond ranked search results.
• Open node details and return to source evidence for verification.

Explore mode is for discovering relationships; retrieval mode is for locating evidence quickly. Both use the same event-entity index and source-text boundaries.