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A semantic network is often used as a form of knowledge representation. It is a directed graph consisting of vertices which represent concepts and edges which represent semantic relations between the concepts. Knowledge representation is needed for library classification and for processing concepts in an information system. ...
This article just presents the basic definitions. ...
In geometry, a vertex (Latin: whirl, whirlpool; plural vertices) is a corner of a polygon (where two sides meet) or of a polyhedron (where three or more faces and an equal number of edges meet). ...
Edge may have <math>one</math> of the following special meanings, in addition to its dictionary definition: wiktionary:edge. ...
Semantic networks are a common type of machine-readable dictionary.
Important semantic relations:
- Meronymy (A is part of B)
- Holonymy (B has A as a part of itself)
- Hyponymy (or troponymy) (A is subordinate of B; A is kind of B)
- Hypernymy (A is superordinate of B)
An example of a semantic network is WordNet, a lexical database of English. Meronymy (from the Greek words meros = part and onoma = name) is a semantic relation. ...
Holonymy (in Greek holon = whole and onoma = name) is a semantic relation. ...
A hyponym (in Greek: υπονÏμιον, literally meaning few names) is a word whose extension is included within that of another word. ...
A hypernym (in Greek υπερνύμιον, literally meaning extra name) is a word whose extension includes the extension of the word of which it is a hypernym. ...
Look up Synonym in Wiktionary, the free dictionary Synonyms (in ancient Greek syn συν = plus and onoma όνομα = name) are different words with similar or identical meanings and are interchangable. ...
Antonyms, from the Greek anti (against) and onoma (name) are word pairs that are opposite in meaning, such as hot and cold, fat and thin, and up and down. ...
WordNet is a semantic lexicon for the English language. ...
A lexicon is usually a list of words together with additional word-specific information, i. ...
The English language is a West Germanic language that originates in England. ...
Such networks involve fairly loose semantic associations that are nonetheless useful for human browsing. It is possible to represent logical descriptions using semantic networks such as the Existential Graphs of Charles S. Peirce or the related Conceptual Graphs of John F. Sowa. These have expressive power equal to or exceeding standard first-order predicate logic. Unlike WordNet or other lexical or browsing networks, semantic networks using these can be used for reliable automated logical deduction. Some automated reasoners exploit the graph-theoretic features of the networks during processing. 2x+5y=0 This page is a candidate for speedy deletion. ...
Charles Sanders Peirce Charles Sanders Peirce (September 10, 1839 – April 19, 1914) was an American logician, philosopher, scientist, and mathematician. ...
Introduction John F. Sowas Conceptual graphs (CGs) are a system of logic based on the existential graphs of Charles Sanders Peirce and the semantic networks of artificial intelligence. ...
John Florian Sowa is the computer scientist who invented conceptual graphs, a graphic notation for logic and natural language, based on the structures in semantic networks and on the existential graphs of Charles S. Peirce. ...
First-order predicate calculus or first-order logic (FOL) permits the formulation of quantified statements such as there exists an x such that. ...
"Semantic Nets" were first invented for computers by Richard H. Richens of the Cambridge Language Research Unit in 1956 as an "interlingua" for machine translation of natural languages. They were developed by Robert F. Simmons at Systems Development Corporation, Santa Monica, California in the early 1960s and later featured prominently in the work of M. Ross Quillian in 1966. 1956 (MCMLVI) was a leap year starting on Sunday of the Gregorian calendar. ...
An international auxiliary language (sometimes abbreviated as IAL or auxlang) is a language used (or to be used in the future) for communication between people from different nations who do not share a common native language. ...
This article is in need of attention. ...
Santa Monica Pier Santa Monica is a coastal city in western Los Angeles County, California, USA, by the Pacific Ocean, south of Pacific Palisades and Brentwood, and north of Venice. ...
Official language(s) English Capital Sacramento Largest city Los Angeles Area - Total - Width - Length - % water - Latitude - Longitude Ranked 3rd 410,000 km² 402. ...
The 1960s decade refers to the years from 1960 to 1969, inclusive. ...
1966 (MCMLXVI) was a common year starting on Saturday (link goes to calendar) // Events January January 1 - In a coup, Colonel Jean-Bédel Bokassa ousts president David Dacko and takes over the Central African Republic. ...
There are elaborate types of semantic networks connected with a corresponding set of software tools for knowledge engineering, like the Semantic Network Processing System ( SNePS ) of Stuart C. Shapiro or the MultiNet paradigm of Hermann Helbig (MultiNet is an acronym for "Multilayered Extended Semantic Network"). The latter is especially suited for the semantic representation of natural language expressions and used in several NLP applications. Multilayered extended semantic networks (abbreviated MultiNets) are both a knowledge representation paradigm and a language for meaning representation of natural language expressions. ...
NLP can be an abbreviation for: natural language processing - an area of computational linguistics concerned with the processing of naturally occurring (human) language by computers. ...
One can consider a mind map to be a very free form variant of a semantic network. By using colors and pictures the emphasis is on generating a semantic net which evokes human creativity. A mind map or mindmap is a multicoloured and image centered radial diagram that represents semantic or other connections between portions of learned material. ...
In the 1960s to 1980s the idea of a semantic link was developed within hypertext systems as the most basic unit, or edge, in an semantic network. These ideas were extremely influential, and there have been many attempts to add typed link semantics to HTML and XML. The 1960s decade refers to the years from 1960 to 1969, inclusive. ...
The 1980s decade refers to the years from 1980 to 1989, inclusive. ...
This article may be confusing for some readers, and should be edited to enhance clarity. ...
In computing, hypertext is a user interface paradigm for displaying documents which, according to an early definition (Nelson 1970), branch or perform on request. ...
A typed link in a hypertext system is a link to another document or part of a document that includes information about the character of the link. ...
A piece of HTML code with syntax highlighting In computing, Hypertext Markup Language (HTML) is a markup language designed for the creation of web pages with hypertext and other information to be displayed in a web browser. ...
The Extensible Markup Language (XML) is a W3C-recommended general-purpose markup language for creating special-purpose markup languages, capable of describing many different kinds of data. ...
See also
The Semantic Web is a project that intends to create a universal medium for information exchange by giving meaning (semantics), in a manner understandable by machines, to the content of documents on the Web. ...
An information space is the application of a spatial metaphor to information. ...
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