about

Specifies that this Item is about a particular resource, e.g. a Post describing a book, hotel, etc.

Comment
enSpecifies that this Item is about a particular resource, e.g. a Post describing a book, hotel, etc.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enabout

account of

Refers to the foaf:Agent or foaf:Person who owns this sioc:UserAccount.

Comment
enRefers to the foaf:Agent or foaf:Person who owns this sioc:UserAccount.
Domain
User account
InverseOf
account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enaccount of
Range
Agent

addressed to

Refers to who (e.g. a UserAccount, e-mail address, etc.) a particular Item is addressed to.

Comment
enRefers to who (e.g. a UserAccount, e-mail address, etc.) a particular Item is addressed to.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enaddressed to

administrator of

A Site that the UserAccount is an administrator of.

Comment
enA Site that the UserAccount is an administrator of.
Domain
User account
InverseOf
has administrator
IsDefinedBy
SIOC Core Ontology Namespace
Label
enadministrator of
Range
Site

attachment

The URI of a file attached to an Item.

Comment
enThe URI of a file attached to an Item.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enattachment

avatar

An image or depiction used to represent this UserAccount.

Comment
enAn image or depiction used to represent this UserAccount.
Domain
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enavatar
SubPropertyOf
depiction

Community

Community is a high-level concept that defines an online community and what it consists of.

Comment
enCommunity is a high-level concept that defines an online community and what it consists of.
DisjointWith
Item
Role
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enCommunity

Container

An area in which content Items are contained.

Comment
enAn area in which content Items are contained.
DisjointWith
Item
Role
User account
Usergroup
IsDefinedBy
SIOC Core Ontology Namespace
Label
enContainer

container of

An Item that this Container contains.

Comment
enAn Item that this Container contains.
Domain
Container
InverseOf
has container
IsDefinedBy
SIOC Core Ontology Namespace
Label
encontainer of
Range
Item

content

The content of the Item in plain text format.

Comment
enThe content of the Item in plain text format.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
encontent
Range
Literal

content encoded

The encoded content of the Post, contained in CDATA areas.

Comment
enThe encoded content of the Post, contained in CDATA areas.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
encontent encoded
Range
Literal
VersionInfo
This property is deprecated. Use content:encoded from the RSS 1.0 content module instead.

created at

When this was created, in ISO 8601 format.

Comment
enWhen this was created, in ISO 8601 format.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
encreated at
Range
Literal
VersionInfo
This property is deprecated. Use dcterms:created from the Dublin Core ontology instead.

creator of

A resource that the UserAccount is a creator of.

Comment
enA resource that the UserAccount is a creator of.
Domain
User account
InverseOf
has creator
IsDefinedBy
SIOC Core Ontology Namespace
Label
encreator of

description

The content of the Post.

Comment
enThe content of the Post.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
endescription
Range
Literal
VersionInfo
This property is deprecated. Use sioc:content or other methods (AtomOwl, content:encoded from RSS 1.0, etc.) instead.

earlier version

Links to a previous (older) revision of this Item or Post.

Comment
enLinks to a previous (older) revision of this Item or Post.
Domain
Item
InverseOf
later version
IsDefinedBy
SIOC Core Ontology Namespace
Label
enearlier version
Range
Item

email

An electronic mail address of the UserAccount.

Comment
enAn electronic mail address of the UserAccount.
Domain
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enemail

email sha1

An electronic mail address of the UserAccount, encoded using SHA1.

Comment
enAn electronic mail address of the UserAccount, encoded using SHA1.
Domain
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enemail sha1
Range
Literal

embeds knowledge

This links Items to embedded statements, facts and structured content.

Comment
enThis links Items to embedded statements, facts and structured content.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enembeds knowledge
Range
Graph

feed

A feed (e.g. RSS, Atom, etc.) pertaining to this resource (e.g. for a Forum, Site, UserAccount, etc.).

Comment
enA feed (e.g. RSS, Atom, etc.) pertaining to this resource (e.g. for a Forum, Site, UserAccount, etc.).
IsDefinedBy
SIOC Core Ontology Namespace
Label
enfeed

first name

First (real) name of this User. Synonyms include given name or christian name.

Comment
enFirst (real) name of this User. Synonyms include given name or christian name.
Domain
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enfirst name
Range
Literal
VersionInfo
This property is deprecated. Use foaf:name or foaf:firstName from the FOAF vocabulary instead.

follows

Indicates that one UserAccount follows another UserAccount (e.g. for microblog posts or other content item updates).

Comment
enIndicates that one UserAccount follows another UserAccount (e.g. for microblog posts or other content item updates).
Domain
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enfollows
Range
User account

Forum

A discussion area on which Posts or entries are made.

Comment
enA discussion area on which Posts or entries are made.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enForum
SubClassOf
Container

function of

A UserAccount that has this Role.

Comment
enA UserAccount that has this Role.
Domain
Role
InverseOf
has function
IsDefinedBy
SIOC Core Ontology Namespace
Label
enfunction of
InverseOf
has group
Label
engroup of
VersionInfo
This property has been renamed. Use sioc:usergroup_of instead.

has administrator

A UserAccount that is an administrator of this Site.

Comment
enA UserAccount that is an administrator of this Site.
Domain
Site
InverseOf
administrator of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas administrator
Range
User account

has container

The Container to which this Item belongs.

Comment
enThe Container to which this Item belongs.
Domain
Item
InverseOf
container of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas container
Range
Container

has creator

This is the UserAccount that made this resource.

Comment
enThis is the UserAccount that made this resource.
InverseOf
creator of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas creator
Range
User account

has discussion

The discussion that is related to this Item.

Comment
enThe discussion that is related to this Item.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas discussion

has function

A Role that this UserAccount has.

Comment
enA Role that this UserAccount has.
InverseOf
function of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas function
Range
Role
InverseOf
group of
Label
enhas group
VersionInfo
This property has been renamed. Use sioc:has_usergroup instead.

has host

The Site that hosts this Forum.

Comment
enThe Site that hosts this Forum.
Domain
Forum
InverseOf
host of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas host
Range
Site

has member

A UserAccount that is a member of this Usergroup.

Comment
enA UserAccount that is a member of this Usergroup.
Domain
Usergroup
InverseOf
member of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas member
Range
User account

has moderator

A UserAccount that is a moderator of this Forum.

Comment
enA UserAccount that is a moderator of this Forum.
Domain
Forum
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas moderator
Range
User account

has modifier

A UserAccount that modified this Item.

Comment
enA UserAccount that modified this Item.
Domain
Item
InverseOf
modifier of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas modifier
Range
User account

has owner

A UserAccount that this resource is owned by.

Comment
enA UserAccount that this resource is owned by.
InverseOf
owner of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas owner
Range
User account

has parent

A Container or Forum that this Container or Forum is a child of.

Comment
enA Container or Forum that this Container or Forum is a child of.
Domain
Container
InverseOf
parent of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas parent
Range
Container

has part

An resource that is a part of this subject.

Comment
enAn resource that is a part of this subject.
InverseOf
part of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas part
VersionInfo
This property is deprecated. Use dcterms:hasPart from the Dublin Core ontology instead.

has reply

Points to an Item or Post that is a reply or response to this Item or Post.

Comment
enPoints to an Item or Post that is a reply or response to this Item or Post.
Domain
Item
InverseOf
reply of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas reply
Range
Item
SubPropertyOf
related to

has scope

A resource that this Role applies to.

Comment
enA resource that this Role applies to.
Domain
Role
InverseOf
scope of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas scope

has space

A data Space which this resource is a part of.

Comment
enA data Space which this resource is a part of.
InverseOf
space of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas space
Range
Space

has subscriber

A UserAccount that is subscribed to this Container.

Comment
enA UserAccount that is subscribed to this Container.
Domain
Container
InverseOf
subscriber of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas subscriber
Range
User account
SeeAlso
feed

has usergroup

Points to a Usergroup that has certain access to this Space.

Comment
enPoints to a Usergroup that has certain access to this Space.
Domain
Space
InverseOf
usergroup of
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhas usergroup
Range
Usergroup

host of

A Forum that is hosted on this Site.

Comment
enA Forum that is hosted on this Site.
Domain
Site
InverseOf
has host
IsDefinedBy
SIOC Core Ontology Namespace
Label
enhost of
Range
Forum

id

An identifier of a SIOC concept instance. For example, a user ID. Must be unique for instances of each type of SIOC concept within the same site.

Comment
enAn identifier of a SIOC concept instance. For example, a user ID. Must be unique for instances of each type of SIOC concept within the same site.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enid
Range
Literal

ip address

The IP address used when creating this Item. This can be associated with a creator. Some wiki articles list the IP addresses for the creator or modifiers when the usernames are absent.

Comment
enThe IP address used when creating this Item. This can be associated with a creator. Some wiki articles list the IP addresses for the creator or modifiers when the usernames are absent.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enip address
Range
Literal

Item

An Item is something which can be in a Container.

Comment
enAn Item is something which can be in a Container.
DisjointWith
Container
Role
Space
User account
Usergroup
IsDefinedBy
SIOC Core Ontology Namespace
Label
enItem

last activity date

The date and time of the last activity associated with a SIOC concept instance, and expressed in ISO 8601 format. This could be due to a reply Post or Comment, a modification to an Item, etc.

Comment
enThe date and time of the last activity associated with a SIOC concept instance, and expressed in ISO 8601 format. This could be due to a reply Post or Comment, a modification to an Item, etc.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enlast activity date
Range
Literal
SubPropertyOf
Date

last item date

The date and time of the last Post (or Item) in a Forum (or a Container), in ISO 8601 format.

Comment
enThe date and time of the last Post (or Item) in a Forum (or a Container), in ISO 8601 format.
Domain
Container
IsDefinedBy
SIOC Core Ontology Namespace
Label
enlast item date
Range
Literal
SubPropertyOf
Date

last name

Last (real) name of this user. Synonyms include surname or family name.

Comment
enLast (real) name of this user. Synonyms include surname or family name.
Domain
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enlast name
Range
Literal
VersionInfo
This property is deprecated. Use foaf:name or foaf:surname from the FOAF vocabulary instead.

last reply date

The date and time of the last reply Post or Comment, which could be associated with a starter Item or Post or with a Thread, and expressed in ISO 8601 format.

Comment
enThe date and time of the last reply Post or Comment, which could be associated with a starter Item or Post or with a Thread, and expressed in ISO 8601 format.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enlast reply date
Range
Literal
SubPropertyOf
Date

later version

Links to a later (newer) revision of this Item or Post.

Comment
enLinks to a later (newer) revision of this Item or Post.
Domain
Item
InverseOf
earlier version
IsDefinedBy
SIOC Core Ontology Namespace
Label
enlater version
Range
Item

latest version

Links to the latest revision of this Item or Post.

Comment
enLinks to the latest revision of this Item or Post.
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
enlatest version
Range
Item

member of

A Usergroup that this UserAccount is a member of.

Comment
enA Usergroup that this UserAccount is a member of.
Domain
User account
InverseOf
has member
IsDefinedBy
SIOC Core Ontology Namespace
Label
enmember of
Range
Usergroup

moderator of

A Forum that a UserAccount is a moderator of.

Comment
enA Forum that a UserAccount is a moderator of.
Domain
User account
InverseOf
has moderator
IsDefinedBy
SIOC Core Ontology Namespace
Label
enmoderator of
Range
Forum

modified at

When this was modified, in ISO 8601 format.

Comment
enWhen this was modified, in ISO 8601 format.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
enmodified at
Range
Literal
VersionInfo
This property is deprecated. Use dcterms:modified from the Dublin Core ontology instead.

modifier of

An Item that this UserAccount has modified.

Comment
enAn Item that this UserAccount has modified.
Domain
User account
InverseOf
has modifier
IsDefinedBy
SIOC Core Ontology Namespace
Label
enmodifier of
Range
Item

name

The name of a SIOC concept instance, e.g. a username for a UserAccount, group name for a Usergroup, etc.

Comment
enThe name of a SIOC concept instance, e.g. a username for a UserAccount, group name for a Usergroup, etc.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enname
Range
Literal

next by date

Next Item or Post in a given Container sorted by date.

Comment
enNext Item or Post in a given Container sorted by date.
Domain
Item
InverseOf
previous by date
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennext by date
Range
Item

next version

Links to the next revision of this Item or Post.

Comment
enLinks to the next revision of this Item or Post.
Domain
Item
InverseOf
previous version
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennext version
Range
Item
SubPropertyOf
later version

note

A note associated with this resource, for example, if it has been edited by a UserAccount.

Comment
enA note associated with this resource, for example, if it has been edited by a UserAccount.
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennote
Range
Literal

num authors

The number of unique authors (UserAccounts and unregistered posters) who have contributed to this Item, Thread, Post, etc.

Comment
enThe number of unique authors (UserAccounts and unregistered posters) who have contributed to this Item, Thread, Post, etc.
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennum authors
Range
nonNegativeInteger

num items

The number of Posts (or Items) in a Forum (or a Container).

Comment
enThe number of Posts (or Items) in a Forum (or a Container).
Domain
Container
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennum items
Range
nonNegativeInteger

num replies

The number of replies that this Item, Thread, Post, etc. has. Useful for when the reply structure is absent.

Comment
enThe number of replies that this Item, Thread, Post, etc. has. Useful for when the reply structure is absent.
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennum replies
Range
nonNegativeInteger

num threads

The number of Threads (AKA discussion topics) in a Forum.

Comment
enThe number of Threads (AKA discussion topics) in a Forum.
Domain
Forum
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennum threads
Range
nonNegativeInteger

num views

The number of times this Item, Thread, UserAccount profile, etc. has been viewed.

Comment
enThe number of times this Item, Thread, UserAccount profile, etc. has been viewed.
IsDefinedBy
SIOC Core Ontology Namespace
Label
ennum views
Range
nonNegativeInteger

owner of

A resource owned by a particular UserAccount, for example, a weblog or image gallery.

Comment
enA resource owned by a particular UserAccount, for example, a weblog or image gallery.
Domain
User account
InverseOf
has owner
IsDefinedBy
SIOC Core Ontology Namespace
Label
enowner of

parent of

A child Container or Forum that this Container or Forum is a parent of.

Comment
enA child Container or Forum that this Container or Forum is a parent of.
Domain
Container
InverseOf
has parent
IsDefinedBy
SIOC Core Ontology Namespace
Label
enparent of
Range
Container

part of

A resource that the subject is a part of.

Comment
enA resource that the subject is a part of.
InverseOf
has part
IsDefinedBy
SIOC Core Ontology Namespace
Label
enpart of
VersionInfo
This property is deprecated. Use dcterms:isPartOf from the Dublin Core ontology instead.

Post

An article or message that can be posted to a Forum.

Comment
enAn article or message that can be posted to a Forum.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enPost
SubClassOf
Document
Item

previous by date

Previous Item or Post in a given Container sorted by date.

Comment
enPrevious Item or Post in a given Container sorted by date.
Domain
Item
InverseOf
next by date
IsDefinedBy
SIOC Core Ontology Namespace
Label
enprevious by date
Range
Item

previous version

Links to the previous revision of this Item or Post.

Comment
enLinks to the previous revision of this Item or Post.
Domain
Item
InverseOf
next version
IsDefinedBy
SIOC Core Ontology Namespace
Label
enprevious version
Range
Item
SubPropertyOf
earlier version

reference

Links either created explicitly or extracted implicitly on the HTML level from the Post.

Comment
enLinks either created explicitly or extracted implicitly on the HTML level from the Post.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
enreference
VersionInfo
Renamed to sioc:links_to.

reply of

Links to an Item or Post which this Item or Post is a reply to.

Comment
enLinks to an Item or Post which this Item or Post is a reply to.
Domain
Item
InverseOf
has reply
IsDefinedBy
SIOC Core Ontology Namespace
Label
enreply of
Range
Item
SubPropertyOf
related to

Role

A Role is a function of a UserAccount within a scope of a particular Forum, Site, etc.

Comment
enA Role is a function of a UserAccount within a scope of a particular Forum, Site, etc.
DisjointWith
Container
Item
Space
User account
Usergroup
IsDefinedBy
SIOC Core Ontology Namespace
Label
enRole

SIOC Core Ontology Namespace

SIOC (Semantically-Interlinked Online Communities) is an ontology for describing the information in online communities. This information can be used to export information from online communities and to link them together. The scope of the application areas that SIOC can be used for includes (and is not limited to) weblogs, message boards, mailing lists and chat channels.

Description
enSIOC (Semantically-Interlinked Online Communities) is an ontology for describing the information in online communities. This information can be used to export information from online communities and to link them together. The scope of the application areas that SIOC can be used for includes (and is not limited to) weblogs, message boards, mailing lists and chat channels.
SeeAlso
SIOC Core Ontology Specification
Title
enSIOC Core Ontology Namespace
VersionInfo
Revision: 1.35
Label
SIOC Core Ontology Specification

scope of

A Role that has a scope of this resource.

Comment
enA Role that has a scope of this resource.
InverseOf
has scope
IsDefinedBy
SIOC Core Ontology Namespace
Label
enscope of
Range
Role

sibling

An Item may have a sibling or a twin that exists in a different Container, but the siblings may differ in some small way (for example, language, category, etc.). The sibling of this Item should be self-describing (that is, it should contain all available information).

Comment
enAn Item may have a sibling or a twin that exists in a different Container, but the siblings may differ in some small way (for example, language, category, etc.). The sibling of this Item should be self-describing (that is, it should contain all available information).
Domain
Item
IsDefinedBy
SIOC Core Ontology Namespace
Label
ensibling
Range
Item

Site

A Site can be the location of an online community or set of communities, with UserAccounts and Usergroups creating Items in a set of Containers. It can be thought of as a web-accessible data Space.

Comment
enA Site can be the location of an online community or set of communities, with UserAccounts and Usergroups creating Items in a set of Containers. It can be thought of as a web-accessible data Space.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enSite
SubClassOf
Space

Space

A Space is a place where data resides, e.g. on a website, desktop, fileshare, etc.

Comment
enA Space is a place where data resides, e.g. on a website, desktop, fileshare, etc.
DisjointWith
Item
Role
User account
Usergroup
IsDefinedBy
SIOC Core Ontology Namespace
Label
enSpace

space of

A resource which belongs to this data Space.

Comment
enA resource which belongs to this data Space.
Domain
Space
InverseOf
has space
IsDefinedBy
SIOC Core Ontology Namespace
Label
enspace of

subject

Keyword(s) describing subject of the Post.

Comment
enKeyword(s) describing subject of the Post.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
ensubject
Range
Literal
VersionInfo
This property is deprecated. Use dcterms:subject from the Dublin Core ontology for text keywords and sioc:topic if the subject can be represented by a URI instead.

subscriber of

A Container that a UserAccount is subscribed to.

Comment
enA Container that a UserAccount is subscribed to.
Domain
User account
InverseOf
has subscriber
IsDefinedBy
SIOC Core Ontology Namespace
Label
ensubscriber of
Range
Container
SeeAlso
feed

Thread

A container for a series of threaded discussion Posts or Items.

Comment
enA container for a series of threaded discussion Posts or Items.
IsDefinedBy
SIOC Core Ontology Namespace
Label
enThread
SubClassOf
Container

title

This is the title (subject line) of the Post. Note that for a Post within a threaded discussion that has no parents, it would detail the topic thread.

Comment
enThis is the title (subject line) of the Post. Note that for a Post within a threaded discussion that has no parents, it would detail the topic thread.
Domain
Post
IsDefinedBy
SIOC Core Ontology Namespace
Label
entitle
Range
Literal
VersionInfo
This property is deprecated. Use dcterms:title from the Dublin Core ontology instead.

topic

A topic of interest, linking to the appropriate URI, e.g. in the Open Directory Project or of a SKOS category.

Comment
enA topic of interest, linking to the appropriate URI, e.g. in the Open Directory Project or of a SKOS category.
IsDefinedBy
SIOC Core Ontology Namespace
Label
entopic
SubPropertyOf
Subject

User

UserAccount is now preferred. This is a deprecated class for a User in an online community site.

Comment
enUserAccount is now preferred. This is a deprecated class for a User in an online community site.
DisjointWith
Container
Item
Role
Space
Usergroup
EquivalentClass
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enUser
SubClassOf
Online Account
VersionInfo
This class is deprecated. Use sioc:UserAccount from the SIOC ontology instead.

User account

A user account in an online community site.

Comment
enA user account in an online community site.
DisjointWith
Container
Item
Role
Space
Usergroup
IsDefinedBy
SIOC Core Ontology Namespace
Label
enUser Account
SubClassOf
Online Account

Usergroup

A set of UserAccounts whose owners have a common purpose or interest. Can be used for access control purposes.

Comment
enA set of UserAccounts whose owners have a common purpose or interest. Can be used for access control purposes.
DisjointWith
Container
Item
Role
Space
User account
IsDefinedBy
SIOC Core Ontology Namespace
Label
enUsergroup

usergroup of

A Space that the Usergroup has access to.

Comment
enA Space that the Usergroup has access to.
Domain
Usergroup
InverseOf
has usergroup
IsDefinedBy
SIOC Core Ontology Namespace
Label
enusergroup of
Range
Space