# Web Annotation Ontology (OA)

> The Web Annotation Data Model specification describes a structured model and format to enable...

- Page: https://library.schematica.io/model/8f2982171fb34454bed365cb3f4ead35
- Model type: Ontology
- License: CC0 1.0
- Access type: Free
- Access method: Download
- Model size: Small
- Formats: OWL
- Domains: Tech / IT
- Audiences: Researcher, Developer
- External link: https://bioportal.bioontology.org/ontologies/OA
- Contact: Web Annotation Working Group (https://github.com/w3c/web-annotation)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | OA |
| Description | The Web Annotation Data Model specification describes a structured model and format to enable annotations to be shared and reused across different hardware and software platforms. Annotations are typically used to convey information about a resource or associations between resources. Simple examples include a comment or tag on a single web page or image, or a blog post about a news article. |
| Format | OWL |
| Categories | Upper Level Ontology |
| Groups | Bibliographic Materials Group |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 25 |
| Individuals | 17 |
| Properties | 19 |
| Max Depth | 1 |
| Max Child Count | 11 |
| Average Child Count | 3 |
| Classes With One Child | 4 |
| Classes With More Than 25 Children | 0 |
| Classes With No Definition | 4 |

## Projects using OA

No projects using OA

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Source: https://library.schematica.io/model/8f2982171fb34454bed365cb3f4ead35