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Information Artifact Ontology
| Acronym | IAO |
| Visibility | Public |
| Description | The Information Artifact Ontology (IAO) is an ontology of information entities, originally driven by work by the OBI consortium.
To import Latest released version: http://purl.obolibrary.org/obo/iao.owl Other versions Developer (live) version: http://purl.obolibrary.org/obo/iao/dev/iao.owl Ontology metadata properties and classes only: http://purl.obolibrary.org/obo/iao/dev/iao.owl Dated versions
Please note: The ontology metrics displayed by BioPortal do not distinguish IAO-developed terms from terms imported from other ontologies. Tracker: http://purl.obolibrary.org/obo/iao/tracker |
| Status | Beta |
| Format | OWL |
| Categories | |
| Groups |
| Bibliographic reference |
http://purl.obolibrary.org/obo/iao/reports
http://purl.obolibrary.org/obo/iao/reports
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| Contact | Alan Ruttenberg ([email protected]) |
| Creation date | April 10, 2026
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| Deprecated |
false
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| Documentation |
https://github.com/information-artifact-ontology/IAO
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| Homepage |
http://purl.obolibrary.org/obo/iao
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| License | |
| Notes |
IDs allocated to subdomains of IAO. pno.owl: IAO_0020000-IAO_0020999, d-acts.owl: IAO_0021000-IAO_0021999
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An information artifact is, loosely, a dependent continuant or its bearer that is created as the result of one or more intentional processes. Examples: uniprot, the english language, the contents of this document or a printout of it, the temperature measurements from a weather balloon. For more information, see the project home page at https://github.com/information-artifact-ontology/IAO
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IDs allocated to related efforts: PNO: IAO_0020000-IAO_0020999, D_ACTS: IAO_0021000-IAO_0021999
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| Object creation date property |
http://purl.org/dc/elements/1.1/created
http://purl.org/dc/elements/1.1/created
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| Object modification date property |
http://purl.org/dc/elements/1.1/modified
http://purl.org/dc/elements/1.1/modified
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| Root of obsolete branch |
http://www.geneontology.org/formats/oboInOwl#ObsoleteClass
http://www.geneontology.org/formats/oboInOwl#ObsoleteClass
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| Submission date | April 10, 2026
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| Version IRI |
http://purl.obolibrary.org/obo/iao/2026-03-30/iao.owl
http://purl.obolibrary.org/obo/iao/2026-03-30/iao.owl
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| Version information |
2026-03-30
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| uri |
http://purl.obolibrary.org/obo/iao.owl
http://purl.obolibrary.org/obo/iao.owl
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| Version | Released | Uploaded | Downloads |
|---|---|---|---|
| 2026-03-30 (Parsed, Indexed, Metrics, Annotator) | 04/10/2026 | 04/10/2026 | OWL | CSV | RDF/XML | Diff |
| 2022-11-07 (Archived) | 11/15/2022 | 11/15/2022 | OWL | Diff |
| 2020-12-09 (Archived) | 12/10/2020 | 12/10/2020 | OWL | Diff |
| 2020-06-10 (Archived) | 06/24/2020 | 06/24/2020 | OWL | Diff |
| 2015-02-23 (Archived) | 06/11/2019 | 06/11/2019 | OWL | Diff |
| 2015-02-23 (Archived) | 03/26/2017 | 03/26/2017 | OWL | Diff |
| 2015-02-23 (Archived) | 03/24/2017 | 03/24/2017 | OWL | Diff |
| 2015-02-23 (Archived) | 02/09/2017 | 02/09/2017 | OWL | Diff |
| 2015-02-23 (Archived) | 08/19/2015 | 03/09/2015 | OWL | Diff |
| $Revision: 80 $ (Archived) | 07/15/2009 | 09/20/2012 | OWL | Diff |
| 2009-07-15 (Archived) | 07/15/2009 | 09/18/2009 | OWL |
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No views of IAO available
| Classes | 267 |
| Individuals | 21 |
| Properties | 58 |
| Maximum depth | 11 |
| Maximum number of children | 40 |
| Average number of children | 3 |
| Classes with a single child | 31 |
| Classes with more than 25 children | 2 |
| Classes with no definition | 38 |