Abstract: An apparatus comprising a plurality of refinement nodes implemented on processors and memory, each arranged as a vertex in a graph topology. Each refinement node obtains inputs, performs refinement operations, and contributes enhanced outputs into a structured interchange maintained in memory accessible across the graph. The structured interchange is realized through embodiments including network-connected data containers, in-memory caches, or distributed key-value stores. Notification mechanisms signal availability of new or modified artifacts through publish-subscribe messaging, polling, processor interrupts, or equivalent signaling techniques. Refinement nodes opportunistically detect and act upon artifacts without centralized orchestration and without requiring synchronization of identical data copies. Refinement operations are cumulative and domain-specific, ensuring no node negates refinements of another.