has moderator
range: Thing
domain: Thing
inverse of: moderator of
type: ObjectProperty
comment: A UserAccount that is a moderator of this Forum.
domain: Forum
range: User Account
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Container
domain: Resource

Usergroup
subclass of: Resource
subclass of: Thing
type: Class
comment: A set of UserAccounts whose owners have a common purpose or interest. Can be used for access control purposes.
disjoint with: Container
disjoint with: Item
disjoint with: Role
disjoint with: Space
disjoint with: User Account
disjoint with: User

avatar
range: Thing
domain: Thing
type: ObjectProperty
comment: An image or depiction used to represent this UserAccount.
domain: User Account
sub property of: depiction
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

follows
range: Thing
domain: Thing
type: ObjectProperty
comment: Indicates that one UserAccount follows another UserAccount (e.g. for microblog posts or other content item updates).
domain: User Account
range: User Account
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

reference
range: Thing
domain: Thing
type: DeprecatedProperty
type: ObjectProperty
comment: Links either created explicitly or extracted implicitly on the HTML level from the Post.
domain: Post
version info: Renamed to sioc:links_to.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Item

next version
range: Thing
domain: Thing
type: ObjectProperty
comment: Links to the next revision of this Item or Post.
domain: Item
range: Item
sub property of: later version
inverse of: previous version
type: Property
range: Resource
domain: Resource

Site
subclass of: Thing
subclass of: Resource
type: Class
comment: 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.
subclass of: Space

next by date
range: Thing
domain: Thing
type: ObjectProperty
comment: Next Item or Post in a given Container sorted by date.
domain: Item
range: Item
inverse of: previous by date
type: Property
range: Resource
domain: Resource

Role
subclass of: Resource
subclass of: Thing
type: Class
comment: A Role is a function of a UserAccount within a scope of a particular Forum, Site, etc.
disjoint with: Container
disjoint with: Item
disjoint with: Space
disjoint with: User Account
disjoint with: Usergroup
disjoint with: User
disjoint with: Community

account of
range: Thing
domain: Thing
type: ObjectProperty
comment: Refers to the foaf:Agent or foaf:Person who owns this sioc:UserAccount.
domain: User Account
range: Agent
inverse of: account
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

has administrator
range: Thing
domain: Thing
type: ObjectProperty
comment: A UserAccount that is an administrator of this Site.
domain: Site
range: User Account
inverse of: administrator of
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Space
domain: Resource

host of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Forum that is hosted on this Site.
domain: Site
range: Forum
inverse of: has host
type: Property
range: Container
range: Resource
domain: Space
domain: Resource

has owner
range: Thing
domain: Thing
type: ObjectProperty
comment: A UserAccount that this resource is owned by.
range: User Account
inverse of: owner of
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Resource

Post
subclass of: Thing
subclass of: Resource
type: Class
comment: An article or message that can be posted to a Forum.
subclass of: Item
subclass of: Document

related to
range: Thing
domain: Thing
type: ObjectProperty
comment: Related Posts for this Post, perhaps determined implicitly from topics or references.
type: Property
range: Resource
domain: Resource

has subscriber
range: Thing
domain: Thing
type: ObjectProperty
comment: A UserAccount that is subscribed to this Container.
domain: Container
range: User Account
inverse of: subscriber of
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Resource

Container
subclass of: Thing
subclass of: Resource
type: Class
comment: An area in which content Items are contained.
disjoint with: Item
disjoint with: Role
disjoint with: User Account
disjoint with: Usergroup
disjoint with: User

attachment
range: Thing
domain: Thing
type: ObjectProperty
comment: The URI of a file attached to an Item.
domain: Item
type: Property
range: Resource
domain: Resource

has reply
range: Thing
domain: Thing
type: ObjectProperty
comment: Points to an Item or Post that is a reply or response to this Item or Post.
domain: Item
range: Item
sub property of: related to
inverse of: reply of
type: Property
range: Resource
domain: Resource

member of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Usergroup that this UserAccount is a member of.
domain: User Account
range: Usergroup
inverse of: has member
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

embeds knowledge
range: Thing
domain: Thing
type: ObjectProperty
comment: This links Items to embedded statements, facts and structured content.
domain: Item
range: Graph
type: Property
range: Resource
domain: Resource

has host
range: Thing
domain: Thing
type: ObjectProperty
comment: The Site that hosts this Forum.
domain: Forum
range: Site
inverse of: host of
type: Property
range: Resource
range: Space
domain: Container
domain: Resource

email
range: Thing
domain: Thing
type: ObjectProperty
comment: An electronic mail address of the UserAccount.
domain: User Account
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

previous version
range: Thing
domain: Thing
type: ObjectProperty
comment: Links to the previous revision of this Item or Post.
domain: Item
range: Item
sub property of: earlier version
inverse of: next version
type: Property
range: Resource
domain: Resource

has modifier
range: Thing
domain: Thing
type: ObjectProperty
comment: A UserAccount that modified this Item.
domain: Item
range: User Account
inverse of: modifier of
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Resource

feed
range: Thing
domain: Thing
type: ObjectProperty
comment: A feed (e.g. RSS, Atom, etc.) pertaining to this resource (e.g. for a Forum, Site, UserAccount, etc.).
type: Property
range: Resource
domain: Resource

Space
subclass of: Thing
subclass of: Resource
type: Class
comment: A Space is a place where data resides, e.g. on a website, desktop, fileshare, etc.
disjoint with: Item
disjoint with: Role
disjoint with: User Account
disjoint with: Usergroup
disjoint with: User

function of
range: Thing
domain: Thing
type: ObjectProperty
comment: A UserAccount that has this Role.
domain: Role
inverse of: has function
type: Property
range: Resource
domain: Resource

has function
range: Thing
domain: Thing
type: ObjectProperty
comment: A Role that this UserAccount has.
range: Role
inverse of: function of
type: Property
range: Resource
domain: Resource

has space
range: Thing
domain: Thing
type: ObjectProperty
comment: A data Space which this resource is a part of.
range: Space
inverse of: space of
type: Property
range: Resource
domain: Resource

User
subclass of: User Account
disjoint with: Role
disjoint with: Usergroup
disjoint with: Container
disjoint with: Item
equivalent class: User Account
version info: This class is deprecated. Use sioc:UserAccount from the SIOC ontology instead.
disjoint with: Space
subclass of: OnlineAccount
type: DeprecatedClass
comment: UserAccount is now preferred. This is a deprecated class for a User in an online community site.
type: Class

has part
range: Thing
domain: Thing
type: DeprecatedProperty
type: ObjectProperty
comment: An resource that is a part of this subject.
inverse of: part of
version info: This property is deprecated. Use dcterms:hasPart from the Dublin Core ontology instead.
type: Property
range: Resource
domain: Resource

has member
range: Thing
domain: Thing
type: ObjectProperty
comment: A UserAccount that is a member of this Usergroup.
domain: Usergroup
range: User Account
inverse of: member of
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Resource

topic
range: Thing
domain: Thing
type: ObjectProperty
comment: A topic of interest, linking to the appropriate URI, e.g. in the Open Directory Project or of a SKOS category.
sub property of: subject
type: Property
range: Resource
domain: Resource

scope of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Role that has a scope of this resource.
range: Role
inverse of: has scope
type: Property
range: Resource
domain: Resource

creator of
range: Thing
domain: Thing
type: ObjectProperty
comment: A resource that the UserAccount is a creator of.
domain: User Account
inverse of: has creator
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

latest version
range: Thing
domain: Thing
type: ObjectProperty
comment: Links to the latest revision of this Item or Post.
domain: Item
range: Item
type: Property
range: Resource
domain: Resource

User Account
subclass of: User
subclass of: Resource
subclass of: Thing
type: Class
disjoint with: Role
subclass of: OnlineAccount
disjoint with: Usergroup
disjoint with: Space
comment: A user account in an online community site.
disjoint with: Container
disjoint with: Item
disjoint with: Community
equivalent class: User

links to
range: Thing
domain: Thing
type: ObjectProperty
comment: Links extracted from hyperlinks within a SIOC concept, e.g. Post or Site.
sub property of: references
type: Property
range: Resource
domain: Resource

reply of
range: Thing
domain: Thing
type: ObjectProperty
comment: Links to an Item or Post which this Item or Post is a reply to.
domain: Item
range: Item
sub property of: related to
inverse of: has reply
type: Property
range: Resource
domain: Resource

Forum
subclass of: Thing
subclass of: Resource
type: Class
comment: A discussion area on which Posts or entries are made.
subclass of: Container

addressed to
range: Thing
domain: Thing
type: ObjectProperty
comment: Refers to who (e.g. a UserAccount, e-mail address, etc.) a particular Item is addressed to.
domain: Item
type: Property
range: Resource
domain: Resource

Thread
subclass of: Resource
subclass of: Thing
type: Class
comment: A container for a series of threaded discussion Posts or Items.
subclass of: Container

about
range: Thing
domain: Thing
type: ObjectProperty
comment: Specifies that this Item is about a particular resource, e.g. a Post describing a book, hotel, etc.
domain: Item
type: Property
range: Resource
domain: Resource

Community
subclass of: Resource
subclass of: Thing
type: Class
comment: Community is a high-level concept that defines an online community and what it consists of.
disjoint with: Item
disjoint with: Role
disjoint with: User Account

has parent
range: Thing
domain: Thing
type: ObjectProperty
comment: A Container or Forum that this Container or Forum is a child of.
domain: Container
range: Container
inverse of: parent of
type: Property
range: Resource
domain: Resource

owner of
range: Thing
domain: Thing
type: ObjectProperty
comment: A resource owned by a particular UserAccount, for example, a weblog or image gallery.
domain: User Account
inverse of: has owner
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

modifier of
range: Thing
domain: Thing
type: ObjectProperty
comment: An Item that this UserAccount has modified.
domain: User Account
range: Item
inverse of: has modifier
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

Item
subclass of: Thing
subclass of: Resource
type: Class
comment: An Item is something which can be in a Container.
disjoint with: Container
disjoint with: Role
disjoint with: Space
disjoint with: User Account
disjoint with: Usergroup
disjoint with: User
disjoint with: Community

has scope
range: Thing
domain: Thing
type: ObjectProperty
comment: A resource that this Role applies to.
domain: Role
inverse of: scope of
type: Property
range: Resource
domain: Resource

parent of
range: Thing
domain: Thing
type: ObjectProperty
comment: A child Container or Forum that this Container or Forum is a parent of.
domain: Container
range: Container
inverse of: has parent
type: Property
range: Resource
domain: Resource

administrator of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Site that the UserAccount is an administrator of.
domain: User Account
range: Site
inverse of: has administrator
type: Property
range: Resource
range: Space
domain: Resource
domain: User
domain: OnlineAccount

has container
range: Thing
domain: Thing
type: ObjectProperty
comment: The Container to which this Item belongs.
domain: Item
range: Container
inverse of: container of
type: Property
range: Resource
domain: Resource

link
range: Thing
domain: Thing
type: ObjectProperty
comment: A URI of a document which contains this SIOC object.
type: Property
range: Resource
domain: Resource

part of
range: Thing
domain: Thing
type: DeprecatedProperty
type: ObjectProperty
comment: A resource that the subject is a part of.
inverse of: has part
version info: This property is deprecated. Use dcterms:isPartOf from the Dublin Core ontology instead.
type: Property
range: Resource
domain: Resource

has group
range: Thing
domain: Thing
type: DeprecatedProperty
type: ObjectProperty
inverse of: group of
version info: This property has been renamed. Use sioc:has_usergroup instead.
type: Property
range: Resource
domain: Resource

usergroup of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Space that the Usergroup has access to.
domain: Usergroup
range: Space
inverse of: has usergroup
type: Property
range: Resource
domain: Resource

has discussion
range: Thing
domain: Thing
type: ObjectProperty
comment: The discussion that is related to this Item.
domain: Item
type: Property
range: Resource
domain: Resource

space of
range: Thing
domain: Thing
type: ObjectProperty
comment: A resource which belongs to this data Space.
domain: Space
inverse of: has space
type: Property
range: Resource
domain: Resource

group of
range: Thing
domain: Thing
type: DeprecatedProperty
type: ObjectProperty
inverse of: has group
version info: This property has been renamed. Use sioc:usergroup_of instead.
type: Property
range: Resource
domain: Resource

subscriber of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Container that a UserAccount is subscribed to.
domain: User Account
range: Container
inverse of: has subscriber
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

previous by date
range: Thing
domain: Thing
type: ObjectProperty
comment: Previous Item or Post in a given Container sorted by date.
domain: Item
range: Item
inverse of: next by date
type: Property
range: Resource
domain: Resource

moderator of
range: Thing
domain: Thing
type: ObjectProperty
comment: A Forum that a UserAccount is a moderator of.
domain: User Account
range: Forum
inverse of: has moderator
type: Property
range: Container
range: Resource
domain: Resource
domain: User
domain: OnlineAccount

has usergroup
range: Thing
domain: Thing
type: ObjectProperty
comment: Points to a Usergroup that has certain access to this Space.
domain: Space
range: Usergroup
inverse of: usergroup of
type: Property
range: Resource
domain: Resource

container of
range: Thing
domain: Thing
type: ObjectProperty
comment: An Item that this Container contains.
domain: Container
range: Item
inverse of: has container
type: Property
range: Resource
domain: Resource

has creator
range: Thing
domain: Thing
type: ObjectProperty
comment: This is the UserAccount that made this resource.
range: User Account
inverse of: creator of
type: Property
range: User
range: OnlineAccount
range: Resource
domain: Resource

num items
type: DatatypeProperty
comment: The number of Posts (or Items) in a Forum (or a Container).
domain: Container
range: nonNegativeInteger
type: Property
range: Resource
range: integer
range: decimal
domain: Thing
domain: Resource

created at
type: DatatypeProperty
type: DeprecatedProperty
comment: When this was created, in ISO 8601 format.
domain: Post
range: Literal
version info: This property is deprecated. Use dcterms:created from the Dublin Core ontology instead.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Thing
domain: Item

id
type: DatatypeProperty
comment: 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.
range: Literal
type: Property
range: Resource

earlier version
type: TransitiveProperty
comment: Links to a previous (older) revision of this Item or Post.
domain: Item
range: Item
inverse of: later version
type: Property
type: ObjectProperty
range: Resource
range: Thing
domain: Resource
domain: Thing

content encoded
type: DatatypeProperty
type: DeprecatedProperty
comment: The encoded content of the Post, contained in CDATA areas.
domain: Post
range: Literal
version info: This property is deprecated. Use content:encoded from the RSS 1.0 content module instead.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Thing
domain: Item

last item date
type: DatatypeProperty
comment: The date and time of the last Post (or Item) in a Forum (or a Container), in ISO 8601 format.
domain: Container
range: Literal
sub property of: date
type: Property
range: Resource
domain: Thing
domain: Resource

first name
type: DatatypeProperty
type: DeprecatedProperty
comment: First (real) name of this User. Synonyms include given name or christian name.
domain: User Account
range: Literal
version info: This property is deprecated. Use foaf:name or foaf:firstName from the FOAF vocabulary instead.
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount
domain: Thing

name
type: DatatypeProperty
comment: The name of a SIOC concept instance, e.g. a username for a UserAccount, group name for a Usergroup, etc.
range: Literal
type: Property
range: Resource

SIOC Core Ontology Namespace
description: 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.
type: Ontology
type: Thing
version info: Revision: 1.35

num replies
type: DatatypeProperty
comment: The number of replies that this Item, Thread, Post, etc. has. Useful for when the reply structure is absent.
range: nonNegativeInteger
type: Property
range: Resource
range: integer
range: decimal

last reply date
type: DatatypeProperty
comment: 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.
range: Literal
sub property of: date
type: Property
range: Resource

SIOC Core Ontology Specification

last activity date
type: DatatypeProperty
comment: 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.
range: Literal
sub property of: date
type: Property
range: Resource

description
type: DatatypeProperty
type: DeprecatedProperty
comment: The content of the Post.
domain: Post
range: Literal
version info: This property is deprecated. Use sioc:content or other methods (AtomOwl, content:encoded from RSS 1.0, etc.) instead.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Thing
domain: Item

content
type: DatatypeProperty
comment: The content of the Item in plain text format.
domain: Item
range: Literal
type: Property
range: Resource
domain: Resource
domain: Thing

modified at
type: DatatypeProperty
type: DeprecatedProperty
comment: When this was modified, in ISO 8601 format.
domain: Post
range: Literal
version info: This property is deprecated. Use dcterms:modified from the Dublin Core ontology instead.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Thing
domain: Item

num views
type: DatatypeProperty
comment: The number of times this Item, Thread, UserAccount profile, etc. has been viewed.
range: nonNegativeInteger
type: Property
range: Resource
range: integer
range: decimal

num threads
type: DatatypeProperty
comment: The number of Threads (AKA discussion topics) in a Forum.
domain: Forum
range: nonNegativeInteger
type: Property
range: Resource
range: integer
range: decimal
domain: Container
domain: Resource
domain: Thing

sibling
type: SymmetricProperty
comment: 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).
domain: Item
range: Item
type: Property
type: ObjectProperty
range: Resource
range: Thing
domain: Resource
domain: Thing

subject
type: DatatypeProperty
type: DeprecatedProperty
comment: Keyword(s) describing subject of the Post.
domain: Post
range: Literal
version info: 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.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Thing
domain: Item

note
type: DatatypeProperty
comment: A note associated with this resource, for example, if it has been edited by a UserAccount.
range: Literal
type: Property
range: Resource

num authors
type: DatatypeProperty
comment: The number of unique authors (UserAccounts and unregistered posters) who have contributed to this Item, Thread, Post, etc.
range: nonNegativeInteger
type: Property
range: Resource
range: integer
range: decimal

title
type: DatatypeProperty
type: DeprecatedProperty
comment: 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.
domain: Post
range: Literal
version info: This property is deprecated. Use dcterms:title from the Dublin Core ontology instead.
type: Property
range: Resource
domain: Resource
domain: Document
domain: Thing
domain: Item

last name
type: DatatypeProperty
type: DeprecatedProperty
comment: Last (real) name of this user. Synonyms include surname or family name.
domain: User Account
range: Literal
version info: This property is deprecated. Use foaf:name or foaf:surname from the FOAF vocabulary instead.
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount
domain: Thing

email sha1
type: DatatypeProperty
comment: An electronic mail address of the UserAccount, encoded using SHA1.
domain: User Account
range: Literal
type: Property
range: Resource
domain: Resource
domain: User
domain: OnlineAccount
domain: Thing

later version
type: TransitiveProperty
comment: Links to a later (newer) revision of this Item or Post.
domain: Item
range: Item
inverse of: earlier version
type: Property
type: ObjectProperty
range: Resource
range: Thing
domain: Resource
domain: Thing

ip address
type: DatatypeProperty
comment: 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.
domain: Item
range: Literal
type: Property
range: Resource
domain: Resource
domain: Thing