# Nepomuk File Ontology (NFO): About files and other desktop resources.

Authors:
- - Tracker Developers
  - Ludger van Elst, DFKI, <elst@dfki.uni-kl.de>
  - Michael Sintek, DFKI, <michael.sintek@dfki.de>
  - Leo Sauermann, DFKI, <leo.sauermann@dfki.de>
  - Antoni Mylka, DFKI, <antoni.mylka@dfki.de>
Editors:
- - Antoni Mylka, DFKI, <antoni.mylka@dfki.de>
  - Tracker developers (translation into turtle)
Contributors:
- - Christiaan Fluit, Aduna, <christiaan.fluit@aduna-software.com>
  - Evgeny 'phreedom' Egorochkin, KDE Strigi Developer, <stexx@mail.ru>
Upstream:

- Upstream version

ChangeLog:

- Tracker changes

Copyright:

- © 2007 DFKI © 2009 Nokia. The ontologies are made available under the terms of NEPOMUK software license (FIXME verify)

## NFO Ontology Classes

### nfo:FileDataObject

A resource containing a finite sequence of bytes with arbitrary information, that is available to a computer program and is usually based on some kind of durable storage. A file is durable in the sense that it remains available for programs to use after the current program has finished.

`Superclasses` :

  nie:DataObject,

`Subclasses` :

  nfo:DeletedResource, nfo:EmbeddedFileDataObject, nfo:RemoteDataObject,

`In domain of` :

  nfo:fileLastModified, nfo:fileOwner, nfo:hasHash, nfo:fileName, nfo:permissions, nfo:fileSize, nfo:fileCreated, nfo:fileLastAccessed,

`In range of` :

  --

### nfo:Video

A video file.

`Superclasses` :

  nfo:Visual,

`Subclasses` :

  --

`In domain of` :

  nfo:averageVideoBitrate, nfo:frameCount, nfo:frameRate,

`In range of` :

  --

### nfo:MediaList

A file containing a list of media files.e.g. a playlist

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:mediaListEntry, nfo:listDuration, nfo:entryCounter, nfo:hasMediaFileListEntry,

`In range of` :

  --

### nfo:Executable

An executable file.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:SoftwareCategory

A software category

`Superclasses` :

  nie:InformationElement, nfo:DataContainer,

`Subclasses` :

  --

`In domain of` :

  nfo:softwareCategoryIcon,

`In range of` :

  --

### nfo:SourceCode

Code in a compilable or interpreted programming language.

`Superclasses` :

  nfo:PlainTextDocument,

`Subclasses` :

  --

`In domain of` :

  nfo:definesGlobalVariable, nfo:definesFunction, nfo:definesClass, nfo:programmingLanguage, nfo:commentCharacterCount,

`In range of` :

  --

### nfo:RemotePortAddress

An address specifying a remote host and port. Such an address can be interpreted in many ways (examples of such interpretations include mailboxes, websites, remote calendars or filesystems), depending on an interpretation, various kinds of data may be extracted from such an address.

`Superclasses` :

  nie:DataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Cursor

A Cursor.

`Superclasses` :

  nfo:RasterImage,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:RegionOfInterest

Area on an image with relevant content. Following the spec in http://www.metadataworkinggroup.org

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:roiRefersTo, nfo:regionOfInterestType, nfo:regionOfInterestHeight, nfo:regionOfInterestWidth, nfo:regionOfInterestY, nfo:regionOfInterestX,

`In range of` :

  nfo:hasRegionOfInterest,

### nfo:Document

A generic document. A common superclass for all documents on the desktop.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  nfo:HelpDocument, nfo:Note, nfo:MindMap, nfo:Spreadsheet, nfo:Presentation, nfo:TextDocument,

`In domain of` :

  nfo:tableOfContents,

`In range of` :

  --

#### Note:

This class notifies about changes

### http://www.tracker-project.org/ontologies/poi#ObjectOfInterest

`Superclasses` :

  rdfs:Resource,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  nfo:depicts,

### nfo:Presentation

A Presentation made by some presentation software (Corel Presentations, OpenOffice Impress, MS Powerpoint etc.)

`Superclasses` :

  nfo:Document,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:RemoteDataObject

A file data object stored at a remote location. Don't confuse this class with a RemotePortAddress. This one applies to a particular resource, RemotePortAddress applies to an address, that can have various interpretations.

`Superclasses` :

  nfo:FileDataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Software

A piece of software. Examples may include applications and the operating system. This interpretation most commonly applies to SoftwareItems.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  nfo:SoftwareApplication, nfo:Application, nfo:OperatingSystem,

`In domain of` :

  nfo:softwareCmdLine, nfo:softwareIcon, nfo:supercedes, nfo:conflicts,

`In range of` :

  nfo:supercedes, nfo:conflicts,

### nfo:ArchiveItem

A file entity inside an archive.

`Superclasses` :

  nfo:EmbeddedFileDataObject,

`Subclasses` :

  --

`In domain of` :

  nfo:isPasswordProtected,

`In range of` :

  --

### nfo:HardDiskPartition

A partition on a hard disk

`Superclasses` :

  nie:DataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Font

A font.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:foundry, nfo:fontFamily,

`In range of` :

  --

### nfo:FilesystemImage

An image of a filesystem. Instances of this class may include CD images, DVD images or hard disk partition images created by various pieces of software (e.g. Norton Ghost)

`Superclasses` :

  nfo:Filesystem,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:HelpDocument

User guides and similar to assist the user

`Superclasses` :

  nfo:Document,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:DeletedResource

A file entity that has been deleted from the original source. Usually such entities are stored within various kinds of 'Trash' or 'Recycle Bin' folders.

`Superclasses` :

  nfo:FileDataObject,

`Subclasses` :

  --

`In domain of` :

  nfo:deletionDate, nfo:originalLocation,

`In range of` :

  --

### nfo:RasterImage

A raster image.

`Superclasses` :

  nfo:Image,

`Subclasses` :

  nfo:Cursor,

`In domain of` :

  --

`In range of` :

  --

### nfo:MindMap

A MindMap, created by a mind-mapping utility. Examples might include FreeMind or mind mapper.

`Superclasses` :

  nfo:Document,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Note

Usually small document with snippets, reminders or frequenly used content.

`Superclasses` :

  nfo:Document,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:PlainTextDocument

A file containing plain text (ASCII, Unicode or other encodings). Examples may include TXT, HTML, XML, program source code etc.

`Superclasses` :

  nfo:TextDocument,

`Subclasses` :

  nfo:SourceCode, nfo:HtmlDocument,

`In domain of` :

  --

`In range of` :

  --

### nfo:Spreadsheet

A spreadsheet, created by a spreadsheet application. Examples might include Gnumeric, OpenOffice Calc or MS Excel.

`Superclasses` :

  nfo:Document,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Trash

Represents a container for deleted files, a feature common in modern operating systems.

`Superclasses` :

  nfo:DataContainer,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Media

A piece of media content. This class may be used to express complex media containers with many streams of various media content (both aural and visual).

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  nfo:Audio, nfo:Visual,

`In domain of` :

  nfo:lastPlayedPosition, nfo:equipment, nfo:genre, nfo:averageBitrate, nfo:bitrateType, nfo:encodedBy, nfo:codec, nfo:bitDepth, nfo:hasMediaStream, nfo:compressionType, nfo:duration, nfo:count,

`In range of` :

  --

### nfo:SoftwareService

A service published by a piece of software, either by an operating system or an application. Examples of such services may include calendar, addresbook and mailbox managed by a PIM application. This category is introduced to distinguish between data available directly from the applications (Via some Interprocess Communication Mechanisms) and data available from files on a disk. In either case both DataObjects would receive a similar interpretation (e.g. a Mailbox) and wouldn't differ on the content level.

`Superclasses` :

  nie:DataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:VectorImage

`Superclasses` :

  nfo:Image,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:WebHistory

A web history entry

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:uri, nfo:domain,

`In range of` :

  --

#### Note:

This class notifies about changes

### nfo:HtmlDocument

A HTML document, may contain links to other files.

`Superclasses` :

  nfo:PlainTextDocument,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:TextDocument

A text document

`Superclasses` :

  nfo:Document,

`Subclasses` :

  nfo:PaginatedTextDocument, nfo:PlainTextDocument,

`In domain of` :

  nfo:characterCount, nfo:lineCount, nfo:wordCount,

`In range of` :

  --

### nfo:SoftwareItem

A DataObject representing a piece of software. Examples of interpretations of a SoftwareItem include an Application and an OperatingSystem.

`Superclasses` :

  nie:DataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:OperatingSystem

An OperatingSystem

`Superclasses` :

  nfo:Software,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:PaginatedTextDocument

A file containing a text document, that is unambiguously divided into pages. Examples might include PDF, DOC, PS', DVI etc.

`Superclasses` :

  nfo:TextDocument,

`Subclasses` :

  --

`In domain of` :

  nfo:pageCount,

`In range of` :

  --

### nfo:MediaFileListEntry

A single node in the list of media files contained within an MediaList instance. This class is intended to provide a type all those links have. In valid NRL untyped resources cannot be linked. There are no properties defined for this class but the application may expect rdf:first and rdf:last links. The former points to the DataObject instance, interpreted as Media the latter points at another MediaFileListEntr. At the end of the list there is a link to rdf:nil.

`Superclasses` :

  rdfs:Resource,

`Subclasses` :

  --

`In domain of` :

  nfo:entryUrl, nfo:listPosition,

`In range of` :

  nfo:hasMediaFileListEntry,

### nfo:Folder

A folder/directory. Examples of folders include folders on a filesystem and message folders in a mailbox.

`Superclasses` :

  nfo:DataContainer,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Filesystem

A filesystem. Examples of filesystems include hard disk partitions, removable media, but also images thereof stored in files.

`Superclasses` :

  nfo:DataContainer,

`Subclasses` :

  nfo:FilesystemImage,

`In domain of` :

  --

`In range of` :

  --

### nfo:Image

A file containing an image.

`Superclasses` :

  nfo:Visual,

`Subclasses` :

  nfo:Icon, nfo:VectorImage, nfo:RasterImage,

`In domain of` :

  nfo:hasRegionOfInterest, nfo:depicts, nfo:orientation, nfo:horizontalResolution, nfo:verticalResolution,

`In range of` :

  nfo:softwareIcon, nfo:softwareCategoryIcon,

#### Note:

This class notifies about changes

### nfo:CompressionType

Type of compression. Instances of this class represent the limited set of values allowed for the nfo:compressionType property.

`Superclasses` :

  rdfs:Resource,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  nfo:compressionType,

### nfo:FileHash

A fingerprint of the file, generated by some hashing function.

`Superclasses` :

  rdfs:Resource,

`Subclasses` :

  --

`In domain of` :

  nfo:hashAlgorithm, nfo:hashValue,

`In range of` :

  nfo:hasHash,

### nfo:MediaStream

A stream of multimedia content, usually contained within a media container such as a movie (containing both audio and video) or a DVD (possibly containing many streams of audio and video). Most common interpretations for such a DataObject include Audio and Video.

`Superclasses` :

  nie:DataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Attachment

A file attached to another data object. Many data formats allow for attachments: emails, vcards, ical events, id3 and exif...

`Superclasses` :

  nfo:EmbeddedFileDataObject,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Equipment

The equipment used to create media

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:equipmentSoftware, nfo:model, nfo:manufacturer,

`In range of` :

  nfo:equipment,

### nfo:Website

A website, usually a container for remote resources, that may be interpreted as HTMLDocuments, images or other types of content.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:Application

An application

`Superclasses` :

  nfo:Software,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:EmbeddedFileDataObject

A file embedded in another data object. There are many ways in which a file may be embedded in another one. Use this class directly only in cases if none of the subclasses gives a better description of your case.

`Superclasses` :

  nfo:FileDataObject,

`Subclasses` :

  nfo:ArchiveItem, nfo:Attachment,

`In domain of` :

  nfo:encoding,

`In range of` :

  --

### nfo:DataContainer

A superclass for all entities, whose primary purpose is to serve as containers for other data object. They usually don't have any 'meaning' by themselves. Examples include folders, archives and optical disc images.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  nfo:SoftwareCategory, nfo:Archive, nfo:Trash, nfo:Filesystem, nfo:Folder,

`In domain of` :

  --

`In range of` :

  nfo:belongsToContainer,

### nfo:BookmarkFolder

A folder with bookmarks of a webbrowser. Use nfo:containsBookmark to relate Bookmarks. Folders can contain subfolders, use containsBookmarkFolder to relate them.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:containsBookmark, nfo:containsBookmarkFolder,

`In range of` :

  nfo:containsBookmarkFolder,

#### Note:

This class notifies about changes

### nfo:Audio

A file containing audio content

`Superclasses` :

  nfo:Media,

`Subclasses` :

  --

`In domain of` :

  nfo:peakGain, nfo:gain, nfo:rearChannels, nfo:averageAudioBitrate, nfo:sampleRate, nfo:frontChannels, nfo:bitsPerSample, nfo:sampleCount, nfo:lfeChannels, nfo:sideChannels, nfo:channels,

`In range of` :

  --

#### Note:

This class notifies about changes

### nfo:Archive

A compressed file. May contain other files or folder inside.

`Superclasses` :

  nfo:DataContainer,

`Subclasses` :

  --

`In domain of` :

  nfo:uncompressedSize,

`In range of` :

  --

### nfo:Visual

File containing visual content.

`Superclasses` :

  nfo:Media,

`Subclasses` :

  nfo:Video, nfo:Image,

`In domain of` :

  nfo:colorDepth, nfo:width, nfo:height, nfo:interlaceMode, nfo:tilt, nfo:heading, nfo:aspectRatio,

`In range of` :

  --

### nfo:Icon

An Icon (regardless of whether it's a raster or a vector icon. A resource representing an icon could have two types (Icon and Raster, or Icon and Vector) if required.

`Superclasses` :

  nfo:Image,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

### nfo:RegionOfInterestContent

Content in the area. There is a predefined set of contents in the spec: http://www.metadataworkinggroup.org

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  nfo:regionOfInterestType,

`Predefined instances` :

  nfo:roi-content-undefined, nfo:roi-content-barcode, nfo:roi-content-focus, nfo:roi-content-pet, nfo:roi-content-face,

### nfo:Bookmark

A bookmark of a webbrowser. Use nie:title for the name/label, nie:contentCreated to represent the date when the user added the bookmark, and nie:contentLastModified for modifications. nfo:bookmarks to store the link.

`Superclasses` :

  nie:InformationElement,

`Subclasses` :

  --

`In domain of` :

  nfo:streamDuration, nfo:streamPosition, nfo:pageNumber, nfo:characterPosition, nfo:bookmarks,

`In range of` :

  nfo:containsBookmark,

#### Note:

This class notifies about changes

### nfo:SoftwareApplication

An application

`Superclasses` :

  nfo:Software,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  --

#### Note:

This class notifies about changes

### nfo:Orientation

Orientation enum

`Superclasses` :

  rdfs:Resource,

`Subclasses` :

  --

`In domain of` :

  --

`In range of` :

  nfo:orientation,

`Predefined instances` :

  nfo:orientation-left, nfo:orientation-right-mirror, nfo:orientation-right, nfo:orientation-left-mirror, nfo:orientation-bottom-mirror, nfo:orientation-bottom, nfo:orientation-top-mirror, nfo:orientation-top,

## NFO Ontology Properties

### nfo:softwareCategoryIcon

Icon of the software

`Type` :

  --

`Domain` :

  nfo:SoftwareCategory,

`Range` :

  nfo:Image,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:hasMediaStream

Connects a media container with a single media stream contained within.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  nie:DataObject,

`Superproperties` :

  nie:hasPart,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:entryCounter

Number of entries in the list. Optimize some common queries

`Type` :

  --

`Domain` :

  nfo:MediaList,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:isPasswordProtected

States if a given resource is password-protected.

`Type` :

  --

`Domain` :

  nfo:ArchiveItem,

`Range` :

  xsd:boolean,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:regionOfInterestWidth

Width of the region. It is normalized (values between 0 and 1) to the total width of the picture.

`Type` :

  --

`Domain` :

  nfo:RegionOfInterest,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:hasRegionOfInterest

Link an element with a defined region

`Type` :

  --

`Domain` :

  nfo:Image,

`Range` :

  nfo:RegionOfInterest,

`Superproperties` :

  --

`Subproperties` :

  --

### nfo:hashAlgorithm

Name of the algorithm used to compute the hash value. Examples might include CRC32, MD5, SHA, TTH etc.

`Type` :

  --

`Domain` :

  nfo:FileHash,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:frameCount

The amount of frames in a video sequence.

`Type` :

  --

`Domain` :

  nfo:Video,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:count,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:belongsToContainer

Models the containment relations between Files and Folders (or CompressedFiles).

`Type` :

  --

`Domain` :

  nie:DataObject,

`Range` :

  nfo:DataContainer,

`Superproperties` :

  nie:isPartOf,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:gain

Gain of media

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:colorDepth

Amount of bits used to express the color of each pixel.

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:bitDepth,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:tilt

Vertical inclination of the camera while capturing the image, in angles starting on 0 as horizontal, positive numbers pointing up, negative angles pointing down

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:channels

Number of channels. This property is to be used directly if no detailed information is necessary. Otherwise use more detailed subproperties.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  nfo:rearChannels, nfo:frontChannels, nfo:lfeChannels, nfo:sideChannels,

`Cardinality` :

  1

### nfo:listPosition

Position of an entry in a list. Double, to optimize the poor insertions

`Type` :

  --

`Domain` :

  nfo:MediaFileListEntry,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:tableOfContents

Section titles and figure descriptions of the document.

`Type` :

  --

`Domain` :

  nfo:Document,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

`Text indexed` :

  This property is indexed, so it can provide results on text search

### nfo:deletionDate

The date and time of the deletion.

`Type` :

  --

`Domain` :

  nfo:DeletedResource,

`Range` :

  xsd:dateTime,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:conflicts

States that a piece of software is in conflict with another piece of software.

`Type` :

  --

`Domain` :

  nfo:Software,

`Range` :

  nfo:Software,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:definesGlobalVariable

Name of a global variable defined within the source code file.

`Type` :

  --

`Domain` :

  nfo:SourceCode,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:wordCount

The amount of words in a text document.

`Type` :

  --

`Domain` :

  nfo:TextDocument,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:containsBookmarkFolder

The folder contains a bookmark folder.

`Type` :

  --

`Domain` :

  nfo:BookmarkFolder,

`Range` :

  nfo:BookmarkFolder,

`Superproperties` :

  nie:hasLogicalPart,

`Subproperties` :

  --

### nfo:frameRate

Amount of video frames per second.

`Type` :

  --

`Domain` :

  nfo:Video,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:rearChannels

Number of rear channels.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:channels,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:regionOfInterestX

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.

`Type` :

  --

`Domain` :

  nfo:RegionOfInterest,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:mediaListEntry

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

`Type` :

  --

`Domain` :

  nfo:MediaList,

`Range` :

  nie:InformationElement,

`Superproperties` :

  --

`Subproperties` :

  --

### nfo:regionOfInterestY

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.

`Type` :

  --

`Domain` :

  nfo:RegionOfInterest,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:bookmarks

The address of the linked object. Usually a web URL.

`Type` :

  --

`Domain` :

  nfo:Bookmark,

`Range` :

  nie:DataObject,

`Superproperties` :

  nie:links,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:orientation

`Type` :

  --

`Domain` :

  nfo:Image,

`Range` :

  nfo:Orientation,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:supercedes

States that a piece of software supercedes another piece of software.

`Type` :

  --

`Domain` :

  nfo:Software,

`Range` :

  nfo:Software,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:containsBookmark

The folder contains a bookmark.

`Type` :

  --

`Domain` :

  nfo:BookmarkFolder,

`Range` :

  nfo:Bookmark,

`Superproperties` :

  nie:hasLogicalPart,

`Subproperties` :

  --

### nfo:isContentEncrypted

Might change (IE of DataObject property?)

`Type` :

  --

`Domain` :

  nie:InformationElement,

`Range` :

  xsd:boolean,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:programmingLanguage

`Type` :

  --

`Domain` :

  nfo:SourceCode,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:fileCreated

File creation date

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  xsd:dateTime,

`Superproperties` :

  nie:created,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:sampleCount

The amount of samples in an audio clip.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:count,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:compressionType

The type of the compression. Values include, lossy and lossless.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  nfo:CompressionType,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:model

The model of the equipment

`Type` :

  --

`Domain` :

  nfo:Equipment,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:listDuration

Sum of the duration of all items in the list. Optimize some common queries. In seconds

`Type` :

  --

`Domain` :

  nfo:MediaList,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:regionOfInterestHeight

Height of the region. It is normalized (values between 0 and 1) to the total height of the picture.

`Type` :

  --

`Domain` :

  nfo:RegionOfInterest,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:aspectRatio

Visual content aspect ratio. (Width divided by Height)

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:hashValue

The actual value of the hash.

`Type` :

  --

`Domain` :

  nfo:FileHash,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:heading

Specifies the direction of travelling while capturing image/video. The range of values from 0.00 to 359.99 (where 0 is due North, 90 is East, 180 South and 270 is West)

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:commentCharacterCount

The amount of character in comments i.e. characters ignored by the compiler/interpreter.

`Type` :

  --

`Domain` :

  nfo:SourceCode,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:permissions

A string containing the permissions of a file. A feature common in many UNIX-like operating systems.

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:duration

Duration of a media piece.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:manufacturer

The manufacturer of the equipment

`Type` :

  --

`Domain` :

  nfo:Equipment,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:streamPosition

`Type` :

  --

`Domain` :

  nfo:Bookmark,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:domain

`Type` :

  --

`Domain` :

  nfo:WebHistory,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:lastPlayedPosition

Position in the media (in seconds) where the play was paused. Positive number, being 0 the beginning of the media.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:characterPosition

`Type` :

  --

`Domain` :

  nfo:Bookmark,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:sideChannels

Number of side channels

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:channels,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:hasHash

Links the file with it's hash value.

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  nfo:FileHash,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:foundry

The foundry, the organization that created the font.

`Type` :

  --

`Domain` :

  nfo:Font,

`Range` :

  nco:Contact,

`Superproperties` :

  nco:creator,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:interlaceMode

True if the image is interlaced, false if not.

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:boolean,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:entryUrl

URL to the element in certain position of the list

`Type` :

  --

`Domain` :

  nfo:MediaFileListEntry,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:fontFamily

The name of the font family.

`Type` :

  --

`Domain` :

  nfo:Font,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

`Text indexed` :

  This property is indexed, so it can provide results on text search

### nfo:pageCount

Number of pages.

`Type` :

  --

`Domain` :

  nfo:PaginatedTextDocument,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:definesClass

Name of a class defined in the source code file.

`Type` :

  --

`Domain` :

  nfo:SourceCode,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:fileLastAccessed

Time when the file was last accessed.

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  xsd:dateTime,

`Superproperties` :

  dc:date,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:equipmentSoftware

The software of the equipment

`Type` :

  --

`Domain` :

  nfo:Equipment,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:encodedBy

The contains the name of the person or organisation that encoded the media

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:depicts

`Type` :

  --

`Domain` :

  nfo:Image,

`Range` :

  http://www.tracker-project.org/ontologies/poi#ObjectOfInterest,

`Superproperties` :

  --

`Subproperties` :

  --

### nfo:averageBitrate

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).

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:bitrateType

The type of the bitrate. Examples may include CBR and VBR.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:codec

The name of the codec necessary to decode a piece of media.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:streamDuration

`Type` :

  --

`Domain` :

  nfo:Bookmark,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:pageNumber

`Type` :

  --

`Domain` :

  nfo:Bookmark,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:fileSize

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

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  xsd:integer,

`Superproperties` :

  nie:byteSize,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:originalLocation

The original location of the deleted resource.

`Type` :

  --

`Domain` :

  nfo:DeletedResource,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:fileLastModified

last modification date

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  xsd:dateTime,

`Superproperties` :

  dc:date,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:hasMediaFileListEntry

This property is intended to point to an RDF list of MediaFiles.

`Type` :

  --

`Domain` :

  nfo:MediaList,

`Range` :

  nfo:MediaFileListEntry,

`Superproperties` :

  --

`Subproperties` :

  --

### nfo:softwareCmdLine

Command to launch the software

`Type` :

  --

`Domain` :

  nfo:Software,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:regionOfInterestType

The content of a region can be one of the predefined types in the spec

`Type` :

  --

`Domain` :

  nfo:RegionOfInterest,

`Range` :

  nfo:RegionOfInterestContent,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:bitsPerSample

Amount of bits in each audio sample.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:bitDepth,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:lineCount

The amount of lines in a text document

`Type` :

  --

`Domain` :

  nfo:TextDocument,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:averageVideoBitrate

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).

`Type` :

  --

`Domain` :

  nfo:Video,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:definesFunction

A name of a function/method defined in the given source code file.

`Type` :

  --

`Domain` :

  nfo:SourceCode,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:bitDepth

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

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  rdfs:Literal,

`Superproperties` :

  --

`Subproperties` :

  nfo:colorDepth, nfo:bitsPerSample,

`Cardinality` :

  1

### nfo:fileOwner

The owner of the file as defined by the file system access rights feature.

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  nco:Contact,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:encoding

The encoding used for the Embedded File. Examples might include BASE64 or UUEncode

`Type` :

  --

`Domain` :

  nfo:EmbeddedFileDataObject,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:horizontalResolution

Horizontal resolution of an image (if printed). Expressed in DPI.

`Type` :

  --

`Domain` :

  nfo:Image,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:equipment

Equipment used to create the media

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  nfo:Equipment,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:softwareIcon

Icon of the software

`Type` :

  --

`Domain` :

  nfo:Software,

`Range` :

  nfo:Image,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:fileName

Name of the file, together with the extension

`Type` :

  --

`Domain` :

  nfo:FileDataObject,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

`Text indexed` :

  This property is indexed, so it can provide results on text search

### nfo:count

A common superproperty for all properties signifying the amount of atomic media data units. Examples of subproperties may include sampleCount and frameCount.

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  nfo:frameCount, nfo:sampleCount,

`Cardinality` :

  1

### nfo:uri

`Type` :

  --

`Domain` :

  nfo:WebHistory,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:averageAudioBitrate

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).

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:peakGain

Peak Gain of media

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:characterCount

The amount of characters in the document.

`Type` :

  --

`Domain` :

  nfo:TextDocument,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:frontChannels

Number of front channels.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:channels,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:uncompressedSize

Uncompressed size of the content of a compressed file.

`Type` :

  --

`Domain` :

  nfo:Archive,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:genre

Genre of media

`Type` :

  --

`Domain` :

  nfo:Media,

`Range` :

  xsd:string,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

`Text indexed` :

  This property is indexed, so it can provide results on text search

### nfo:lfeChannels

Number of Low Frequency Expansion (subwoofer) channels.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:integer,

`Superproperties` :

  nfo:channels,

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:width

Visual content width in pixels.

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:height

Visual content height in pixels.

`Type` :

  --

`Domain` :

  nfo:Visual,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:sampleRate

The amount of audio samples per second.

`Type` :

  --

`Domain` :

  nfo:Audio,

`Range` :

  xsd:double,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:roiRefersTo

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

`Type` :

  --

`Domain` :

  nfo:RegionOfInterest,

`Range` :

  nie:InformationElement,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1

### nfo:verticalResolution

Vertical resolution of an Image (if printed). Expressed in DPI

`Type` :

  --

`Domain` :

  nfo:Image,

`Range` :

  xsd:integer,

`Superproperties` :

  --

`Subproperties` :

  --

`Cardinality` :

  1