The NeOn Methodology structures ontology work as a controlled process with reuse, scenarios, and reviews. It is useful when ontologies should not emerge ad hoc but modularly and reusably.
Knowledge Modeling Process model
NeOn Methodology
Plans ontology projects as combinations of nine scenarios for specification, reuse, reengineering, and alignment.
NeOn treats ontologies as networks and provides nine scenarios rather than one linear process. A project selects scenarios, outputs, dependencies, and lifecycle to fit its context.
Which NeOn scenarios and activities lead from our sources to a maintainable ontology network?
- Participants
- 2-10
- Time
- Mehrere Wochen bis Monate
NeOn Methodology uses project-specific combination of the nine NeOn scenarios with explicit deliverables. Assessments remain justified and context-bound.

Requirements
Requirements
Establish ontology requirements specification and network boundary.
Select scenarios
Select scenarios
Choose NeOn scenarios from sources and reuse needs.
Plan activities
Plan activities
Plan deliverables, dependencies, roles, and tests per scenario.
Govern lifecycle
Govern lifecycle
Govern modules, versions, alignments, and releases.
Update after new evidence or a material context change and retain the previous version.
A good fit when
For larger ontology initiatives involving reuse, non-ontological sources, or multiple ontologies.
Ideal for
- Larger ontology projects
- Reuse of existing ontologies
- Distributed modeling teams
- Enterprise knowledge graphs
Not good for
- Sehr kleine Ad-hoc-Ontologien
- Pure explorative Skizzen ohne Reuse-Anspruch
Outputs

NeOn project route
NeOn project route with traceable sources, assumptions, and domain decisions.

Decision and review trail
Owners, dates, and next review for NeOn project route.
NeOn project route
Fictional worked example
project-specific combination of the nine NeOn scenarios with explicit deliverables as a precise working structure with a fictional example.
Need
CQ · scope · non-goal
Project actions, no finance ontology.
Scenario
Number · purpose · input
S2: reuse and re-engineer CSV; S3: reuse ORG.
Deliverable
Output · test · owner
Mapping tests; ontology lead.
Dependency
Module · version · alignment
Reuse W3C ORG; Person↔Member mapping.
The example demonstrates the domain logic of NeOn Methodology; worksheets remain blank.
First step
Start with the core question: Which NeOn scenarios and activities lead from our sources to a maintainable ontology network?
Good to do first
Deep dive
First, context, goals, and matching NeOn scenarios are set. The team then plans reuse of existing ontologies and works through iterative modeling and review steps. In the end, documented modules and clear maintenance paths remain for larger knowledge graph initiatives.
The NeOn Methodology works because it organizes ontology work as a reusable development process with scenarios, reuse, and reviews. Its benefit grows when decisions about sources, modules, and maintenance are treated not incidentally but as shapeable work packages. It gains substance through the living connection between domain goal, reused building blocks, and governance, so that the ontology can keep evolving consistently beyond the first draft.
A clear use case with a few modules and a review rhythm that brings together domain and technical feedback is suitable for getting started. It becomes a sensitive point when reuse looks more attractive than fit; then adoptions must be checked hard against the own domain. A good close anchors responsibilities, review criteria, and the next iteration step within the ongoing way of working.
The method guide walks execution through 4 phases, timing, 4 pitfalls, and clear stop criteria.
Open method guideYour perspective
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Sources and topics
NeOn Methodology: WorksheetPlan NeOn Methodology around its domain steps and the concrete decision question.markdown
neon-methodology-working-template.md
Plan NeOn Methodology around its domain steps and the concrete decision question.
NeOn Methodology: Worksheet
Question
To be confirmed
Desired outcome
To be confirmed
Scope
Full initiative Time: 2–4 hours planning; initiative over multiple iterations
Complete this worksheet on paper or in your own document during the work.
Preparation for this scope
Method setup
- Materials: Ontology requirements specification, source and ontology inventory, reuse and governance goals, shared workspace, source links, and decision log.
- Roles: Ontology lead · domain experts · data stewards · integration owners
- Advance information: Collect Ontology requirements specification, source and ontology inventory, reuse and governance goals in advance and mark open assumptions.
- Overall time needed: 2–4 hours planning; initiative over multiple iterations
- Setup: Prepare project-specific combination of the nine NeOn scenarios with explicit deliverables visibly and calibrate assessment terms before starting.
Prepare for the work steps
Requirements: Requirements
- Ontology requirements specification
- source and ontology inventory
- reuse and governance goals
Select scenarios: Select scenarios
- ORSD
- source and ontology inventory
- reuse and governance goals
Plan activities: Plan activities
- scenario route
- source and ontology inventory
- reuse and governance goals
Govern lifecycle: Govern lifecycle
- work plan
- source and ontology inventory
- reuse and governance goals
NeOn project route
Need
CQ · scope · non-goal
...
Scenario
Number · purpose · input
...
Deliverable
Output · test · owner
...
Dependency
Module · version · alignment
...
Enter only real input, sources, and decisions.
NeOn Methodology for Building Ontology Networks
Requirements: Requirements
Expected artifact: ORSD
ORSD · source · uncertainty · next decision
Entry:
...
- Are competency questions and non-goals included?
Select scenarios: Select scenarios
Expected artifact: scenario route
scenario route · source · uncertainty · next decision
Entry:
...
- Are the nine NeOn scenarios distinguished according to the primary list?
Plan activities: Plan activities
Expected artifact: work plan
work plan · source · uncertainty · next decision
Entry:
...
- Does every deliverable have an acceptance criterion?
Govern lifecycle: Govern lifecycle
Expected artifact: release route
release route · source · uncertainty · next decision
Entry:
...
- Are dependencies and backward compatibility checked?
Open questions and next steps
...
Method guide: https://methodatlas.meierhoff-systems.de/en/methods/neon-methodology/run-sheet
Alternatives and neighbors
Fitting alternatives with decision guidance, followed by other related methods.

Instead of NeOn Methodology, choose Linked Open Terms when you want to network terms using open vocabularies and external references.

Query patterns drive node labels, relationships, and constraints so property graphs match real retrieval needs.

Validation shapes define required classes, properties, and constraints before graph data enters production pipelines.

Forces complex content into simple language and immediately reveals which knowledge gaps still need closing.

Maps critical knowledge, knowledge holders, and gaps so handovers and transfer can be planned deliberately.

Sorts knowledge into Projects, Areas, Resources, and Archive so personal knowledge work stays easier to steer.
Constraints and origin
Profile
- Method form
- Process model
- Participants
- 2-10
- Time
- Mehrere Wochen bis Monate
- Maturity
- Established
- Origin
- NeOn Project

