Deliberate practices, techniques, or roles that mediate, map, translate, or negotiate between differing ontological commitments, taxonomies, or categorizations so that actors across knowledge domains can coordinate observation, data exchange, interpretation, or decision‑making about the same phenomena or objects.

Principle

Brokerage constructs interoperable correspondences or managed pluralism: by producing mappings, standards, or negotiated descriptions, brokers enable coordination but also impose interpretive choices that can stabilize one set of categories over others.

Demonstration

Illustrative scenario → An archaeologist, a museum curator, and an Indigenous knowledge holder co‑design a catalogue. Recognition: each uses different category sets for artefacts (chronology, material typology, cultural relation). Action: an appointed broker produces a metadata schema that records multiple category fields and documents provenance and local terms. Consequence: datasets become exchangeable across institutions, but the schema’s priority fields influence which interpretations are searchable and therefore more likely to inform exhibits and research.

Misapplication

Assuming ontological brokerage is a neutral technical task of one‑to‑one mapping. The semantic error is neglecting that choices about which categories are recorded, prioritized, or omitted are interpretive and political, not merely mechanical.

Consequence

Effective brokerage can make collaboration and data interoperability possible; poorly executed brokerage can erase minority categories, fix contingent interpretations into standards, or legitimate misrepresentations. The material consequences affect whose knowledge is visible, archived, and mobilized in research and public narratives.

Reversal

In contexts where preserving distinct ontologies is an explicit goal (for example, community protocols that refuse translation of sacred categories), refusal of brokerage or the preservation of parallel ontologies is the appropriate stance rather than forced commensuration.

Boundary

Clearly within: a negotiated metadata crosswalk that maps local terminologies to institutional taxonomies while retaining original terms. Boundary case: an automated controlled‑vocabulary mapping that aligns only high‑level categories. Clearly outside: routine editorial standardization that reformats descriptions without addressing categorical mismatches.

Semantic Tension

Standardization ↔ Pluralism — the technical benefits of interoperable standards often conflict with the ethical and epistemic imperative to respect multiple, incommensurable ways of categorizing the world.

Synthesis

Ontological brokerage is not only a data‑engineering problem but a situated interpretive and political practice: its techniques produce translation and coordination at the cost of making enduring choices about which realities are foregrounded and which remain marginal.