Tsparql – 3.0: Nepomuk Annotation Ontology (NAO)
Description: Reference for Tsparql-3.0: Nepomuk Annotation Ontology (NAO)

#### Nepomuk Annotation Ontology (NAO)

Tags, ratings and other common annotations to all classes

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

The following classes are defined:

Tag

# Classes

## Tag

Represents a generic tag

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

#### Class hierarchy

#### RDF Diagram

#### 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
isDefaultTag | boolean |  |
tagRelatedTo | Class |  |

#### Predefined instances

nao:Tag has the following predefined instances:

- nao:predefined-tag-favorite

# Additional properties for rdfs:Resource

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

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:

- Ludger van Elst, DFKI, <elst@dfki.uni-kl.de>
- Michael Sintek, DFKI, <michael.sintek@dfki.de>
- Siegfried Handschuh, DERI/NUIG, <siegfried.handschuh@deri.org>
- Simon Scerri, DERI/NUIG, <simon.scerri@deri.org>

Editors:

- Simon Scerri, DERI/NUIG, <simon.scerri@deri.org>
- Tracker developers (translation into turtle)

Contributors:

- Antoni Mylka, DFKI, <antoni.mylka@dfki.de>
- Julien Gaugaz, L3S, <gaugaz@l3s.de>
- Knud Möller, DERI/NUIG, <knud.moeller@deri.org>
- Leo Sauermann, DFKI, <leo.sauermann@dfki.de>
- Max Völkel, FZI, <voelkel@fzi.de>
- Sebastian Trüg, EDGE-IT, <strueg@mandriva.com>

Upstream: Upstream version

ChangeLog: Tracker changes

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