Synonyms for X at Thesaurus.com with free online thesaurus, antonyms, and definitions.
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Neatly replaces words in expressions creating alternative terms.
online synonym ring dictionary
Synonyms–words that denote the same concept and are interchangeable in many contexts–are grouped into unordered sets (synsets). Each of WordNet’s 117 000 synsets is linked to other synsets by means of a small number of “conceptual relations.”
What the synonym ring does for X
A synonym ring file contains sets of terms that are considered equivalent.
A synonym ring connects a series of terms together and treats them all as equivalent for search purposes. When a user enters “PSM,” for instance, the search term will be sent through the synonym ring to see if there are any equivalent terms. For “PSM” we would find “Phase Shift Mask” as a synonym. The search engine would then retrieve all documents with either “PSM” or “Phase Shift Mask” in their metadata. The searcher would get the complete set of relevant documents as though they had searched both terms (something few people would think to do).
If there is no match in the synonym list, the search is simply sent through the index as usual and any documents with “PSM” are returned. The synonym ring goes into effect only when there is a matching synonym for the term entered into the search box by the user.
An authority file is similar to the synonym ring, with the addition of one type of term relationship. Instead of all of the terms being equal, one term is identified as the preferred term and the others are considered variant terms.
Authority files help with tagging content consistently. Catalogers for large library collections have long used authority files to find approved terms for describing an item.
“This term is indexed as INDIANS OF NORTH AMERICA.” The authority file is the place you go find which term is the heading (the main term) and which term is the cross reference (the variant term).
USE FOR: Dark Knight, Caped Crusader
A basic controlled vocabulary consists of two elements: a list of the terms, and an equivalence relationship. A controlled vocabulary expands the result set. You get more results for your query.
they are used only during retrieval. Use of synonym rings ensures that a concept that can be described by multiple synonymous or equivalent terms will be retrieved if any one of the terms is used in a search.
flat (non-hierarchical) list containing
. May include
. Essentially, an authority file is a
with the preferred term identified for each concept.
BT Controlled Vocabulary
RT Synonym Equivalence List
SN One of the simplest of
. Includes only a list of
terms. When one of the terms is searched, the synonym ring returns results as if the complete set of terms was searched.
BT Controlled Vocabulary
RT Equivalence Relationship
Synonym Equivalence List
Synonym Equivalence List
SN Asynonym ring
+ Preferred terms =
+ Broader and narrower terms =
+ Related terms =
Relationships in Controlled Vocabularies
3.1 Equivalence Relationships
220.127.116.11 Lexical Variants
18.104.22.168 Historical Name Changes
22.214.171.124 Differences in Language
3.1.2 Near Synonyms
3.1.3 Preferred Terms
126.96.36.199.1 How to Choose a Qualifier for a Term
188.8.131.52 Other Ways to Disambiguate Names
Controlled vocabularies are used to ensure consistent indexing, particularly when indexing multiple documents, periodical articles, web pages or sites, etc. They may also be used when indexing a single work, such as a encyclopedia, by multiple indexers.
Controlled vocabularies do not necessarily have any structure or relationships between terms within the list. Controlled vocabularies are often used for name authorities (proper nouns), such as persons, organization names, company names, etc.
Online controlled vocabularies often have synonyms or See references to point the user or search engine from an incorrect (unpreferred) variant to the equivalent preferred term in the controlled vocabulary. However, this is not a required attribute of a controlled vocabulary.
Controlled vocabularies are the broadest category, which includes thesauri and taxonomies. Thesauri and taxonomies are specific kinds of controlled vocabularies, but not all controlled vocabularies are thesauri or taxonomies.