Glossary
From SONIVIS:Wiki
| Contents: | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z – Top of page – References |
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A
Actor
An actor is an active entity within an information space that produces and consumes content. The easiest way to think of an actor is a user of a certain social network. It can consume content (which usually does not mean that the content disappears by consumption) by reading texts, viewing pictures, or watching movies that are contained in the network. These actions have a passive character and are not necessarily noticed or logged by the social software system. To move into a more active role the user could subscribe to the system and start producing content by writing comments or uploading files. When producing content this usually has some side effects. If, for example, the user produces a new revision of an article in a wiki
- she/he becomes an author
- she/he has knowledge about the revision as well as the article
- she/he collaborates with the authors of other revisions of the same article.
To think of an actor as a human being sitting in front of a computer hacking text into a form on a social network site is probably the most natural way to go. But automatized software programs, i.e. bots, may be actors, too. An actor is also an entity in the SONIVIS Data Model.[1]
Actor-Content Element Network
tbd.
Actor-Content Element Relationship
This kind of relationship exists between an actor and a content element. I.e., the author of a revision of a wiki article stands in an actor-content element relationship to that revision. The actor-content element relationship is one of three fundamental relations and, therefore, an information space item of the SONIVIS Data Model.[1]
adjacent
Two nodes are called adjacent if an edge exists between them. If two vertices are joined by an edge, they are adjacent and we call them neighbors [1].
Adjacency Matrix
In an adjacency matrix each entry in row i and column j gives the number of edges from the i-th to the j-th node (Wikipedias graph theory). The adjacency matrix is a common representation of a graph.
Arc
see #Edge
Article
An article is a sub-class of page. It contains pure knowledge about a certain topic. For example, in MediaWiki it belongs to the name space Null (following What is an article). Please consider, an article has to be distinguished from a page, because a page exist to enhance information contained in an article (e.g., with pictures) or to organize articles (e.g., categories).
Author
An author in a social network is a producer of content. In SONIVIS an author is represented as an actor.
B
Basic Item
In the SONIVIS Data Model the term basic item[1] covers the two singular information space items, namely actor and content element. The group of information space items is completed by the three fundamental relations.
Betweenness
Betweenness Centrality
The Betweenness Centrality indicates how important a vertex is for the information flow control in a network. Its value gives the fraction of shortest paths a vertex is part of related to all shortest paths. The higher the value is the more important is the vertex and the more critical it is within the network. If a vertex is the only bridge connecting two sub-networks all information must go through it. If the vertex is removed the network is split into two parts, both not being able to reach the other one.[1] [1]
Broken Link
In wiki as well as SONIVIS terms, a wikilink that points to a page that does not yet exist is called broken. A different term for this kind of link is dangling link. In Wikipedia the broken link is defined as link to a nonexistent page, usually colored red (Wikipedia's definition of Broken Link).
C
Category
Namespace in a (Media)wiki with articles used to group articles. They can but do not need to have content. The list of contained articles is generated by the wiki software. Category articles do not have to be created explicitly. With the first category link established the category exists.
Category Link
A Category Link is a (special) wiki link having the name of the category namespace and a colon prepended to the catgeory name. As soon as a Category Link exists the category of that name exists.
Collaboration
A collaboration is a relationship of two actors working on a piece of content. In SONIVIS it is a specialization of the interactional relationship.
Collaboration Network
That is the entirety of all authors that co-operate on the content within a social network. In SONIVIS terms it is given as a graph with its nodes representing authors and its edges representing special interactional relationships, namely collaboration.
Content Element
The content element given in the data model is described as an entity that has a somehow generated content (Data_Model#ContentElement). It is one of two basic items and, therefore, also an information space item in the SONIVIS Data Model.[1]
Context Network
tbd.
Contextual Relationship
In SONIVIS speech a relationship of some kind between two content elements is named contextual relationship. The relationship between a revision and the article it revises, i.e., is a contextual relationship. The category that groups articles under some criteria has a contextual relationship with each of these articles. The contextual relationship is a, s.c., fundamental relation of the Data Model and is, therefore, an information space item in the SONIVIS Data Model as well.[1]
Creation Time
The timestamp when a content element is created (first saved to the social network software).
D
Dangling Link
Dangling links point to pages that have no outgoing links [1]. Mostly these pages without links are empty and have no content so far. In the context of wikis we call those links to empty pages Broken Link.
Deleted Page
In a wiki a page is called deleted when it is removed from the standard view / access. The MediaWiki software does not remove those pages completely.
Distance Matrix
In a distance matrix each entry in row i and column j gives the shortest path from the i-th to the j-th node.
E
Edge
In graph theory an edge is a connection between two nodes. So, the edge describes a relationship between the two nodes it connects. In the data model the edge entity takes that place.
External Link
An external link is a hyperlink to the WWW.
F
Fundamental Relation
The SONIVIS Data Model contains three fundamental relations[1] that are all part of the group of information space items. The relation between two actors is defined as interactional relationship, that between two content elements as contextual relationship, and that between an actor and a content element is called actor-content element relationship.
G
Geodesic distance
or Shortest Path or Distance
The geodesic distance between two nodes in a network is the number of edges in a shortest path connecting them.
Graph
A graph is a set of nodes and a set of edges connecting these nodes.
Graph Item
In SONIVIS a graph item is any item that can be contained in a graph, i.e. nodes, edges, and graphs. Any graph item usually represents an information space item.
H
Hyper Link
I
Information Space
An information space represents a social network in the SONIVIS Data Model.[1] It contains the entirety of all the network's information space items, the two basic items, i.e., actors and content elements, and the three fundamental relationships (contextual relationship, interactional relationship, and actor-content element relationship) between the basic items. It has a unique name, a system generated identifier, and also covers all graphs generated upon the aforementioned entities.
Information Space Item
In the SONIVIS Data Model there are five kinds of information space items, two basic items, namely actor and content element, and the three fundamental relations, given as contextual relationship, interactional relationship, and actor-content element relationship.[1] In a graphical presentation each information space item can be represented as a graph item.
Information Space Network Type
tbd.
Interaction Network
tbd.
Interactional Relationship
A relationship between two actors is called an interactional relationship in SONIVIS terms. If there are two authors contributing revisions to a wiki article then there exists an interactional relationship between them. This specialized interactional relationship is called collaboration. The interactional relationship is one of three fundamental relations of the SONIVIS Data Model and an information space item as well.[1]
Isolate
A node is isolate if it no connection (edge) to any other node in the network.
L
Line
see #Edge
N
Namespace
A namespace is used to structure the content elements of an information space. For example, in MediaWiki namespaces are used to differentiate between images and articles as content elements (Wikipedia:Namespace).
Network
A network consists of nodes connected by edges between them. It's mathematical representation is a graph.
Network, social
Network, weighted
In a weighted network the edges between nodes have a weight characterizing the intensity of the relationship between two nodes.
Node
or vertex
A node is part of a graph. It may be connected to other nodes in the graph through edges if there is some defined relationship between it and the other one. In the SONIVIS data model a node is also a representative of an existing information space item.
M
Minor Edit
Small changes of a page are called minor edits. They are mostly used to improve the structure of a page without harming its content. In the MediaWiki Software, like it is used for Wikipedia (Help:Minor_edit), this can be marked by "This is a minor edit" before saving the change.
P
Page
A page is a special content element of the information space. Concerning the MediaWiki, all content is organized as a page. To differentiate certain content elements in MediaWiki each page belongs to a namespace, following Wikipedia:Namespace.
R
Registration Time
The timestamp when a user registered in a social network.
Revert
Revision
A revision is a version or state of some more general content element. For example, each wiki article has several revisions where the latest represents the current state of the article. All pages in a wiki have revisions. Revisions in a wiki are percepted as content elements in SONIVIS. They have a contextual relationship to their parental entity, i.e. a category.
Rollback
S
Shortest Path
or Geodesic Distance or Distance
The shortest path between two nodes in a network is the number of edges in a lowest distance connecting them whereas the sum of the weights of its constituent edges is minimized.
Social Network
see Network, social
T
Template
A template is a reusable software item that can be fitted to match the needs for a certain purpose. In MediaWiki templates are mostly small parts of wiki code that can be included in other pages to make certain re-occurring things look-alike, i.e. tables or image frames.
Transitivity
or Local Clustering Coefficient or Global Clustering Coefficient
Triad
Triangle
A triangle in a network are three completely connected nodes, in which every node as a direct connection (edge) to the other two nodes. Every triangle can be represented as three differently connected triples [1]. The number of triangles of a network and its number of connected triples is used to calculate a clustering coefficient named transitivity.
Triple
A connected triple in a network consists of a single node with edges to an unordered pair of other nodes.
U
Undo
User
A user is a person who signed up, i.e. in a wiki, but does not need to have changed any page there. Each author is a user but not vice versa.
V
Vertex
see Node
W
Weighted Network
WikiLink
A wiki link is a hyperlink from one wiki page to another page in the same wiki.
WikiLink Network
See article on Wikilink Network.
| Contents: | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z – Top of page – References |
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