How can a second customer test whether an ontology module is reusable?

Choose a context that can disprove the abstraction

A second installation at an almost identical site may show repeatable deployment but reveal little about semantic reuse. Select a context with one important difference: source authority, approval timing, identity assignment, or lifecycle policy. State the hypothesis the module must survive. The test becomes more informative when the team knows in advance what failure would mean.

Separate reusable meaning from copied implementation

A fictional reservation package works for a manufacturer with centrally managed warehouses. The next customer uses independent service partners. Shared code may still run while the assumption of one inventory authority fails. Ask which facts, actions, and ownership promises remain valid. Copying a schema without its support obligations is installation reuse, not evidence of a product capability.

Preserve differences through supported extension points

Try representing the new context through documented mappings, policies, and extensions. Record any required change to the common kernel explicitly. A growing collection of customer-name conditionals can conceal unresolved differences in meaning. Conversely, forcing every local rule into the shared module can make both deployments harder to understand and change.

Collect a reuse evidence packet

Evidence	What it distinguishes
Stable decision contract	The genuinely shared user outcome
Different source mapping	Local integration from common meaning
Extension exercised	Supported variation from an accidental fork
Compatibility result	Shared maintenance from copied code
Operating handoff	Transferable support from expert dependence
Correction cost	A sustainable module from permanent custom work

Include failed attempts and support effort. The packet should enable a product owner to decline promotion when the module has not earned its continuing obligations.

Compare the available product dispositions

The right result may be a disposable engagement artifact, a supported customer extension, a domain module, or a shared kernel capability. Each choice has a different maintenance promise. Do not make common-product inclusion the only successful outcome of an FDE engagement. A well-bounded local extension can create value without requiring every customer to inherit its assumptions.

Fund the responsibility that reuse creates

Before promotion, name ownership for documentation, compatibility, migration, defects, and retirement. Ask a team outside the original engagement to interpret and correct a result. In this illustrative exercise, needing the original FDE for every unusual record is evidence of incomplete transfer. The second context supports a reuse claim only when both its behavioral fit and its ongoing operating cost are visible.

Evidence and scope

• W3C Data on the Web Best Practices: The recommendations address documentation, provenance, quality, versioning, and feedback for published data.
• W3C DCAT 3: DCAT describes cataloged datasets, distributions, and data services, including version relationships.

The proposed checks are teaching tools; validate their behavior in the actual environment.