# Ontology for Representing CDM Semantics (ORCS)

> The Ontology for Representing CDM Semantics (ORCS) is an application ontology that was developed...

- Page: https://library.schematica.io/model/1a8bd651e29347d8ba4d41903176c53e
- Model type: Ontology
- License: CC BY 4.0
- Access type: Academic
- Access method: Download
- Model size: Mid
- Formats: OWL
- Domains: Healthcare
- Audiences: Researcher
- External link: https://bioportal.bioontology.org/ontologies/ORCS
- Contact: William R. Hogan (hoganwr@gmail.com)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | ORCS |
| Description | The Ontology for Representing CDM Semantics (ORCS) is an application ontology that was developed to transform common-data-model-based data into ontologically-based data such as RDF, RDF*, OWL2, or Referent Tracking tuples.  Although initially developed for such transformations of PCORnet Common Data Model (CDM) based data, ongoing and future work involves other CDMs such as OMOP. |
| Format | OWL |
| Categories | Health |
| Groups |  |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 861 |
| Individuals | 69 |
| Properties | 431 |
| Max Depth | 13 |
| Max Child Count | 53 |
| Average Child Count | 3 |
| Classes With One Child | 117 |
| Classes With More Than 25 Children | 5 |
| Classes With No Definition | 172 |

## Projects using ORCS

No projects using ORCS

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Source: https://library.schematica.io/model/1a8bd651e29347d8ba4d41903176c53e