Manufacturing Knowledge Graph

Text similarity has no representation of how a plant is actually structured, so retrieval cannot reliably tell which equipment, process step or document revision a question refers to.

An explicit graph of the operation can constrain retrieval to the correct entities and make industrial answers substantially more precise.

• Node types for process, equipment, component, control parameter and document.
• Relationship modelling for containment, governance and revision history.
• Entity resolution step that maps a question to graph nodes.
• Graph-constrained retrieval over documents attached to those nodes.

Whether graph-constrained retrieval returns correct-equipment passages more consistently than unconstrained vector retrieval.

• Fewer passages returned, and more often attached to the right equipment.
• Document revision relationships proved as important as equipment relationships.
• Schema maintenance and ingestion are where the real effort sits.