Tag
type: Class
comment: A tag is a keyword that a user adds to an object.
equivalent class: Concept

Comment
type: Class
comment: A comment is a linguistic statement or set of statements added to an object or tag by a tagger during an act of tagging.

Source
type: Class
comment: Source is the place where the object is hosted. It can be Delicious, Flickr, YouTube, etc.
subclass of: Community

Vote
type: Class
comment: Tagging can be viewed as voting. The value of vote can be represented as the number of different taggers tagging a bookmark, the number of users indicating a resource is a favorite, or the number of users viewing a video.

Date
type: Class
comment: Date is the time stamp of the tagging behavior. Format is "MmmYY"

Tagger
type: Class
comment: A tagger is a user who tags object.
subclass of: Agent
subclass of: Usergroup
equivalent class: Person
equivalent class: User

Tagging
type: Class
comment: Tagging is the concept which is created to link other concepts. Itself does not have any real meaning

Object
type: Class
comment: Object is the thing which tagger is tagging. It can be bookmarks, photos, videos, musics, books, slides, etc.
union of: Document
union of: Image
union of: Post

hasDate
type: ObjectProperty
domain: Tagging
range: Date
equivalent property: date

hasObject
type: ObjectProperty
range: Object
domain: Tagging

hasVote
type: DataProperty
range: string
domain: Tagging

hasTag
type: ObjectProperty
domain: Tagging
range: Tag
equivalent property: description
equivalent property: depiction
equivalent property: topic

hasComment
type: DataProperty
range: string
domain: Tagging
equivalent property: note

hasRelatedTag
type: ObjectProperty
domain: Tag
range: Tag
equivalent property: related to
equivalent property: broader
equivalent property: narrower
equivalent property: related

hasCreator
type: ObjectProperty
range: Tagger
domain: Tagging
equivalent property: creator
equivalent property: maker
equivalent property: has creator

hasSource
type: InverseFunctionalProperty
range: Source
domain: Object
type: ObjectProperty
equivalent property: has host
equivalent property: source