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Nepomuk File Ontology (NFO)Nepomuk File Ontology (NFO) — About files and other desktop resources. |
@prefix nfo: <http://tracker.api.gnome.org/ontology/v3/nfo#>
nie:DataObject nfo:FileDataObject ╰── nfo:EmbeddedFileDataObject ╰── nfo:ArchiveItem
This class emits notifications about changes, and can be monitored using TrackerNotifier.
This class emits notifications about changes, and can be monitored using TrackerNotifier.
Name | Type | Notes | Description |
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DataObject | The address of the linked object. Usually a web URL. |
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integer | Character position of the bookmark |
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integer | Page linked by the bookmark |
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integer | |||
integer | Stream position of the bookmark, suitable for e.g. audio books. Expressed in milliseconds |
This class emits notifications about changes, and can be monitored using TrackerNotifier.
Name | Type | Notes | Description |
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Bookmark |
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The folder contains a bookmark. |
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BookmarkFolder |
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The folder contains a bookmark folder. |
nie:InformationElement nfo:Media ╰── nfo:Visual ╰── nfo:Image ╰── nfo:RasterImage ╰── nfo:Cursor
This class emits notifications about changes, and can be monitored using TrackerNotifier.
nie:InformationElement ──┐ nfo:DataContainer ───┤ ├── nfo:Folder │ ├── nfo:Filesystem │ ├── nfo:Trash │ ├── nfo:Archive │ ╰── nfo:ImageCategory │ └── nfo:SoftwareCategory
This class emits notifications about changes, and can be monitored using TrackerNotifier.
nie:InformationElement nfo:Document ├── nfo:TextDocument ├── nfo:Presentation ├── nfo:Spreadsheet ├── nfo:MindMap ├── nfo:Note ╰── nfo:HelpDocument
nie:InformationElement nfo:Document ╰── nfo:TextDocument ╰── nfo:PaginatedTextDocument ╰── nfo:EBook
nie:DataObject nfo:FileDataObject ╰── nfo:EmbeddedFileDataObject ├── nfo:Attachment ╰── nfo:ArchiveItem
This class emits notifications about changes, and can be monitored using TrackerNotifier.
nie:DataObject nfo:FileDataObject ├── nfo:RemoteDataObject ├── nfo:EmbeddedFileDataObject ╰── nfo:DeletedResource
Name | Type | Notes | Description |
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dateTime | File creation date |
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dateTime | Time when the file was last accessed. |
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dateTime | last modification date |
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string | Name of the file, together with the extension |
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Contact | The owner of the file as defined by the file system access rights feature. |
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integer | The size of the file in bytes. For compressed files it means the size of the packed file, not of the contents. For folders it means the aggregated size of all contained files and folders |
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FileHash | Links the file with it's hash value. |
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string | A string containing the permissions of a file. A feature common in many UNIX-like operating systems. |
Name | Type | Notes | Description |
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string | The name of the font family. |
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Contact | The foundry, the organization that created the font. |
nie:InformationElement nfo:Document ╰── nfo:TextDocument ╰── nfo:PlainTextDocument ╰── nfo:HtmlDocument
This class emits notifications about changes, and can be monitored using TrackerNotifier.
nie:InformationElement nfo:Media ╰── nfo:Visual ╰── nfo:Image ├── nfo:RasterImage ├── nfo:VectorImage ╰── nfo:Icon
Name | Type | Notes | Description |
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Resource | Relates an image to the information elements it depicts. |
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RegionOfInterest | Link an element with a defined region |
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integer | Horizontal resolution of an image (if printed). Expressed in DPI. |
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Orientation | |||
integer | Vertical resolution of an Image (if printed). Expressed in DPI |
Name | Type | Notes | Description |
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double | The average overall bitrate of a media container. (i.e. the size of the piece of media in bits, divided by it's duration expressed in seconds). |
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Literal | A common superproperty for all properties signifying the amount of bits for an atomic unit of data. Examples of subproperties may include bitsPerSample and bitsPerPixel |
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string | The type of the bitrate. Examples may include CBR and VBR. |
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string | The name of the codec necessary to decode a piece of media. |
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CompressionType | The type of the compression. Values include, lossy and lossless. |
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integer | A common superproperty for all properties signifying the amount of atomic media data units. Examples of subproperties may include sampleCount and frameCount. |
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integer | Duration of a media piece. |
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string | The contains the name of the person or organisation that encoded the media |
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Equipment | Equipment used to create the media |
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string | Genre of media |
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DataObject |
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Connects a media container with a single media stream contained within. |
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integer | Position in the media (in seconds) where the play was paused. Positive number, being 0 the beginning of the media. |
Name | Type | Notes | Description |
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integer | Number of entries in the list. Optimize some common queries |
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MediaFileListEntry | This property is intended to point to an RDF list of MediaFiles. |
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integer | Sum of the duration of all items in the list. Optimize some common queries. In seconds |
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InformationElement | A certain item belongs to a media list. This can reflect that a song is in a playlist, an image or video in an Album |
nie:InformationElement nfo:Document ╰── nfo:TextDocument ╰── nfo:PaginatedTextDocument ╰── nfo:EBook
nie:InformationElement nfo:Document ╰── nfo:TextDocument ╰── nfo:PlainTextDocument ├── nfo:HtmlDocument ╰── nfo:SourceCode
nie:InformationElement nfo:Media ╰── nfo:Visual ╰── nfo:Image ╰── nfo:RasterImage ╰── nfo:Cursor
Name | Type | Notes | Description |
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double | Height of the region. It is normalized (values between 0 and 1) to the total height of the picture. |
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RegionOfInterestContent | The content of a region can be one of the predefined types in the spec |
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double | Width of the region. It is normalized (values between 0 and 1) to the total width of the picture. |
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double | Coordinate X where the region starts. It is normalized (values between 0 and 1) to the width of the picture. Starting in the upper left corner. |
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double | Coordinate y where the region starts. It is normalized (values between 0 and 1) to the height of the picture. Starting in the upper left corner. |
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InformationElement | Link to an item that is represented in the region. The 'type' of the region can give a clue of what exact content is linked in this property |
nie:InformationElement nfo:Software ├── nfo:OperatingSystem ├── nfo:Application ╰── nfo:SoftwareApplication
nie:InformationElement nie:InformationElement ──┐ nfo:DataContainer ──────────────────────┤ ────────────────────────────────────────────────┤ └── nfo:SoftwareCategory
nie:InformationElement nfo:Document ╰── nfo:TextDocument ╰── nfo:PlainTextDocument ╰── nfo:SourceCode
nie:InformationElement nfo:Document ╰── nfo:TextDocument ├── nfo:PlainTextDocument ╰── nfo:PaginatedTextDocument
This class emits notifications about changes, and can be monitored using TrackerNotifier.
Name | Type | Notes | Description |
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DataContainer | Models the containment relations between Files and Folders (or CompressedFiles). |
Name | Type | Notes | Description |
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Image | Relates an information element to an image which depicts said element. |
© 2007 DFKI © 2009 Nokia. The ontologies are made available under the terms of NEPOMUK software license (FIXME verify)