Nepomuk Annotation Ontology (NAO): Tracker Ontology Reference Manual

## Nepomuk Annotation Ontology (NAO) Nepomuk Annotation Ontology (NAO) — Tags, ratings and other common annotations to all classes |

## Synopsis

    @prefix nao: <http://tracker.api.gnome.org/ontology/v3/nao#>

## Classes

Tag

## Additional Properties

deprecated, hasTag, identifier, isRelated, lastModified, numericRating

## Class Details

### Tag

#### Description

Represents a generic tag

This class emits notifications about changes, and can be monitored using TrackerNotifier.

#### Class hierarchy

        rdfs:Resource
            nao:Tag

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`description` | string |  | In the context of the social semantic desktop the textual annotation provided via rdfs:comment is meant for technical users, the textual annotation here is aimed at average users and is meant to be used to define custom descriptions of resources on the desktop
`prefLabel` | string |  | A preferred label for a resource

## Property Details

### Additional properties for rdfs:Resource

#### Description

Properties this ontology defines which can describe rdfs:Resource resources.

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`deprecated` | boolean |  | If this property is assigned, the subject class, property, or resource, is deprecated and should not be used in production systems any longer. It may be removed without further notice.
`hasTag` | Resource |  | Defines an existing tag for a resource
`identifier` | string |  | Defines a generic identifier for a resource
`isRelated` | Resource |  | This property defines a symmetric relation between any two resources. In order for this property to be used legally, the relationship must be symmetric.
`lastModified` | dateTime |  | last modification date
`numericRating` | double |  | Annotation for a resource in the form of a numeric rating (float value), allowed values are between 1 and 10 whereas 0 is interpreted as not set

## Credits and Copyright

Authors:
  - Siegfried Handschuh, DERI/NUIG, <siegfried.handschuh@deri.org>
  - Ludger van Elst, DFKI, <elst@dfki.uni-kl.de>
  - Michael Sintek, DFKI, <michael.sintek@dfki.de>
  - Simon Scerri, DERI/NUIG, <simon.scerri@deri.org>
Editors:
  - Tracker developers (translation into turtle)
  - Simon Scerri, DERI/NUIG, <simon.scerri@deri.org>
Contributors:
  - Antoni Mylka, DFKI, <antoni.mylka@dfki.de>
  - Julien Gaugaz, L3S, <gaugaz@l3s.de>
  - Knud Möller, DERI/NUIG, <knud.moeller@deri.org>
  - Sebastian Trüg, EDGE-IT, <strueg@mandriva.com>
  - Max Völkel, FZI, <voelkel@fzi.de>
  - Leo Sauermann, DFKI, <leo.sauermann@dfki.de>
Upstream:

  Upstream version

ChangeLog:

  Tracker changes

Copyright:

  © 2007 NEPOMUK Consortium®. This work is made available under the terms of NEPOMUK software license