metadata Metadata is "data Data (; ) are individual facts, statistics, or items of information, often numeric. In a more technical sense, data are a set of values of qualitative property, qualitative or quantity, quantitative variable (research), v ...

a synonym ring or synset, is a group of

data element In metadata Metadata is "data Data (; ) are individual facts, statistics, or items of information, often numeric. In a more technical sense, data are a set of values of qualitative property, qualitative or quantity, quantitative variable ( ...

s that are considered

semantically Semantics (from grc, σημαντικός ''sēmantikós'', "significant") is the study of reference Reference is a relationship between objects in which one object designates, or acts as a means by which to connect to or link to, another ...

equivalent for the purposes of information retrieval. These data elements are frequently found in different metadata registries. Although a group of terms can be considered equivalent,

registries store the synonyms at a central location called the preferred data element. According to

WordNet WordNet is a lexical databaseIn digital lexicography, natural language processing, and digital humanities, a lexicon, lexical resource is a language resource consisting of one or several dictionary, dictionaries, e.g., in the form of a database. ...

, a ''synset'' or synonym set is defined as a set of one or more

synonyms A synonym is a word, morpheme A morpheme is the smallest meaningful lexical item in a language. A morpheme is not a word. The difference between a morpheme and a word is that a morpheme bound and free morphemes, sometimes does not stand alone ...

that are interchangeable in some context without changing the

truth value In logic Logic is an interdisciplinary field which studies truth and reasoning Reason is the capacity of consciously making sense of things, applying logic Logic (from Ancient Greek, Greek: grc, wikt:λογική, λογική, la ...

of the proposition in which they are embedded.

Example

The following are considered semantically equivalent and form a synonym ring: foaf:person

gjxdm The Global Justice XML Data Model (GJXDM or Global JXDM) is a data reference model for the exchange of information within the justice and public safety communities. The Global JXDM is a product of the Global Justice Information Sharing Initiative's ...

:Person niem:Person

sumo is a form of competitive full-contact wrestling where a ''rikishi'' (wrestler) attempts to force his opponent out of a circular ring (''dohyō'') or into touching the ground with any body part other than the soles of his feet (usually by thr ...

:Human

cyc Cyc (pronounced ) is a long-term artificial intelligence Artificial intelligence (AI) is intelligence Intelligence has been defined in many ways: the capacity for abstraction Abstraction in its main sense is a conceptual process wher ...

:Person UMBEL, umbel:Person Note that each data element has two components: # Namespace prefix, which is a shorthand for the name of the metadata registry # Data element name, which is the name of the object in each of the distinct metadata registry

Expressing a synonym ring

A synonym ring can be expressed by a series of statements in the Web Ontology Language (OWL) using the classEquivalence or the propertyEquivalence or instance equivalence statement – the sameAs property.

External links

WordNet
at Princeton University, Princeton Metadata {{Comp-sci-stub

Example

Expressing a synonym ring

See also

External links