Structure and format of ELSST

ELSST follows the recommendations of International Standards Organization’s Guidelines ISO 25964-1 (2011): Information and documentation - Thesauri and interoperability with other vocabularies, Part 1.

Types and form of terms

Types of Terms

There are two types of terms in ELSST: Preferred Terms and Use For terms.

Preferred Terms

Preferred Terms (PTs) represent the concepts contained in the thesaurus and are used for indexing purposes. Every concept has a PT in each language version and a multilingual equivalence holds between these terms. Concepts have a unique SKOS ID - see the 'SKOS Concept' link in the 'View concept' page for each term.

Use For terms

Use For (UFs) terms, also known as Non-Preferred terms, are not used for indexing, but guide the user to the PT with which they share a monolingual equivalence relationship. The number of UFs associated with a PT may differ in each language.

Both PTs and UFs must be unique to each language version of ELSST.

Single-word or compound terms

Terms may consist of single words, or of more than one word, in which case they are referred to as compound terms.

Compound terms are included if they represent a single concept, exist in common usage and cannot be expressed in any other way.

Examples of compound terms

VOUCHER SCHEMES
CRIMES AGAINST HUMANITY

Singular or plural forms

Each language version of ELSST follows the thesaurus conventions for plurality for that given language.

The source language (English) terms of ELSST follow the HASSET convention for singular and plural.

Homographs and qualifiers

Parenthetic qualifiers are used to disambiguate homographs (words with the same spelling but different meanings) within the thesaurus. A qualifier should be added to each homographic term.

Example

LABOUR (WORK)
LABOUR (PREGNANCY)

Even if there is only one homographic term within the thesaurus, a qualifier may be added to promote interoperability.

Example

COFFEE (CROP)
AIDS (DISEASE)

Abbreviations and acronyms

Abbreviations and/or acronyms are generally used as non-preferred terms only. They may be Preferred Terms where the abbreviation and/or acronym is so well established that the full form of the name is rarely used or is generally ignored. In this case, the full form of the name should be included as a Use For term:

Example

Preferred Term Use For
AIDS (DISEASE) ACQUIRED IMMUNE DEFICIENCY SYNDROME

Abbreviations and/or acronyms must have a well-established usage and be unambiguous. No punctuation is used.

Punctuation

Apostrophes

Apostrophes are used in Preferred Terms where the conventions of the language dictate. Alternative spellings without apostrophes may be added as Use For terms.

Example

Preferred Term Use For
WOMEN'S RIGHTS WOMENS RIGHTS

Hyphens

Hyphens are used in Preferred Terms where the conventions of the language dictate. Alternative spellings without hyphenation may be added as Use For terms.

Example

Preferred Term Use For
UNDER-AGE SEX UNDER AGE SEX

Parentheses
The use of parentheses in ELSST is limited to qualifiers.

Relationships between terms
Notes
Other

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